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-rw-r--r--drivers/clk/mvebu/Kconfig51
-rw-r--r--drivers/clk/mvebu/Makefile18
-rw-r--r--drivers/clk/mvebu/ap806-system-controller.c223
-rw-r--r--drivers/clk/mvebu/armada-370.c186
-rw-r--r--drivers/clk/mvebu/armada-375.c184
-rw-r--r--drivers/clk/mvebu/armada-37xx-periph.c762
-rw-r--r--drivers/clk/mvebu/armada-37xx-tbg.c158
-rw-r--r--drivers/clk/mvebu/armada-37xx-xtal.c91
-rw-r--r--drivers/clk/mvebu/armada-38x.c168
-rw-r--r--drivers/clk/mvebu/armada-39x.c158
-rw-r--r--drivers/clk/mvebu/armada-xp.c236
-rw-r--r--drivers/clk/mvebu/clk-corediv.c338
-rw-r--r--drivers/clk/mvebu/clk-cpu.c255
-rw-r--r--drivers/clk/mvebu/common.c296
-rw-r--r--drivers/clk/mvebu/common.h58
-rw-r--r--drivers/clk/mvebu/cp110-system-controller.c452
-rw-r--r--drivers/clk/mvebu/dove-divider.c262
-rw-r--r--drivers/clk/mvebu/dove-divider.h7
-rw-r--r--drivers/clk/mvebu/dove.c203
-rw-r--r--drivers/clk/mvebu/kirkwood.c344
-rw-r--r--drivers/clk/mvebu/mv98dx3236.c182
-rw-r--r--drivers/clk/mvebu/orion.c280
22 files changed, 4912 insertions, 0 deletions
diff --git a/drivers/clk/mvebu/Kconfig b/drivers/clk/mvebu/Kconfig
new file mode 100644
index 000000000..fddc8ac5f
--- /dev/null
+++ b/drivers/clk/mvebu/Kconfig
@@ -0,0 +1,51 @@
+config MVEBU_CLK_COMMON
+ bool
+
+config MVEBU_CLK_CPU
+ bool
+
+config MVEBU_CLK_COREDIV
+ bool
+
+config ARMADA_370_CLK
+ bool
+ select MVEBU_CLK_COMMON
+ select MVEBU_CLK_CPU
+
+config ARMADA_375_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ARMADA_38X_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ARMADA_39X_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ARMADA_37XX_CLK
+ bool
+
+config ARMADA_XP_CLK
+ bool
+ select MVEBU_CLK_COMMON
+ select MVEBU_CLK_CPU
+
+config ARMADA_AP806_SYSCON
+ bool
+
+config ARMADA_CP110_SYSCON
+ bool
+
+config DOVE_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config KIRKWOOD_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ORION_CLK
+ bool
+ select MVEBU_CLK_COMMON
diff --git a/drivers/clk/mvebu/Makefile b/drivers/clk/mvebu/Makefile
new file mode 100644
index 000000000..93ac36852
--- /dev/null
+++ b/drivers/clk/mvebu/Makefile
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_MVEBU_CLK_COMMON) += common.o
+obj-$(CONFIG_MVEBU_CLK_CPU) += clk-cpu.o
+obj-$(CONFIG_MVEBU_CLK_COREDIV) += clk-corediv.o
+
+obj-$(CONFIG_ARMADA_370_CLK) += armada-370.o
+obj-$(CONFIG_ARMADA_375_CLK) += armada-375.o
+obj-$(CONFIG_ARMADA_38X_CLK) += armada-38x.o
+obj-$(CONFIG_ARMADA_39X_CLK) += armada-39x.o
+obj-$(CONFIG_ARMADA_37XX_CLK) += armada-37xx-xtal.o
+obj-$(CONFIG_ARMADA_37XX_CLK) += armada-37xx-tbg.o
+obj-$(CONFIG_ARMADA_37XX_CLK) += armada-37xx-periph.o
+obj-$(CONFIG_ARMADA_XP_CLK) += armada-xp.o mv98dx3236.o
+obj-$(CONFIG_ARMADA_AP806_SYSCON) += ap806-system-controller.o
+obj-$(CONFIG_ARMADA_CP110_SYSCON) += cp110-system-controller.o
+obj-$(CONFIG_DOVE_CLK) += dove.o dove-divider.o
+obj-$(CONFIG_KIRKWOOD_CLK) += kirkwood.o
+obj-$(CONFIG_ORION_CLK) += orion.o
diff --git a/drivers/clk/mvebu/ap806-system-controller.c b/drivers/clk/mvebu/ap806-system-controller.c
new file mode 100644
index 000000000..fa2fbd2ce
--- /dev/null
+++ b/drivers/clk/mvebu/ap806-system-controller.c
@@ -0,0 +1,223 @@
+/*
+ * Marvell Armada AP806 System Controller
+ *
+ * Copyright (C) 2016 Marvell
+ *
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#define pr_fmt(fmt) "ap806-system-controller: " fmt
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define AP806_SAR_REG 0x400
+#define AP806_SAR_CLKFREQ_MODE_MASK 0x1f
+
+#define AP806_CLK_NUM 5
+
+static struct clk *ap806_clks[AP806_CLK_NUM];
+
+static struct clk_onecell_data ap806_clk_data = {
+ .clks = ap806_clks,
+ .clk_num = AP806_CLK_NUM,
+};
+
+static char *ap806_unique_name(struct device *dev, struct device_node *np,
+ char *name)
+{
+ const __be32 *reg;
+ u64 addr;
+
+ reg = of_get_property(np, "reg", NULL);
+ addr = of_translate_address(np, reg);
+ return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
+ (unsigned long long)addr, name);
+}
+
+static int ap806_syscon_common_probe(struct platform_device *pdev,
+ struct device_node *syscon_node)
+{
+ unsigned int freq_mode, cpuclk_freq;
+ const char *name, *fixedclk_name;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct regmap *regmap;
+ u32 reg;
+ int ret;
+
+ regmap = syscon_node_to_regmap(syscon_node);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "cannot get regmap\n");
+ return PTR_ERR(regmap);
+ }
+
+ ret = regmap_read(regmap, AP806_SAR_REG, &reg);
+ if (ret) {
+ dev_err(dev, "cannot read from regmap\n");
+ return ret;
+ }
+
+ freq_mode = reg & AP806_SAR_CLKFREQ_MODE_MASK;
+ switch (freq_mode) {
+ case 0x0:
+ case 0x1:
+ cpuclk_freq = 2000;
+ break;
+ case 0x6:
+ case 0x7:
+ cpuclk_freq = 1800;
+ break;
+ case 0x4:
+ case 0xB:
+ case 0xD:
+ cpuclk_freq = 1600;
+ break;
+ case 0x1a:
+ cpuclk_freq = 1400;
+ break;
+ case 0x14:
+ case 0x17:
+ cpuclk_freq = 1300;
+ break;
+ case 0x19:
+ cpuclk_freq = 1200;
+ break;
+ case 0x13:
+ case 0x1d:
+ cpuclk_freq = 1000;
+ break;
+ case 0x1c:
+ cpuclk_freq = 800;
+ break;
+ case 0x1b:
+ cpuclk_freq = 600;
+ break;
+ default:
+ dev_err(dev, "invalid SAR value\n");
+ return -EINVAL;
+ }
+
+ /* Convert to hertz */
+ cpuclk_freq *= 1000 * 1000;
+
+ /* CPU clocks depend on the Sample At Reset configuration */
+ name = ap806_unique_name(dev, syscon_node, "cpu-cluster-0");
+ ap806_clks[0] = clk_register_fixed_rate(dev, name, NULL,
+ 0, cpuclk_freq);
+ if (IS_ERR(ap806_clks[0])) {
+ ret = PTR_ERR(ap806_clks[0]);
+ goto fail0;
+ }
+
+ name = ap806_unique_name(dev, syscon_node, "cpu-cluster-1");
+ ap806_clks[1] = clk_register_fixed_rate(dev, name, NULL, 0,
+ cpuclk_freq);
+ if (IS_ERR(ap806_clks[1])) {
+ ret = PTR_ERR(ap806_clks[1]);
+ goto fail1;
+ }
+
+ /* Fixed clock is always 1200 Mhz */
+ fixedclk_name = ap806_unique_name(dev, syscon_node, "fixed");
+ ap806_clks[2] = clk_register_fixed_rate(dev, fixedclk_name, NULL,
+ 0, 1200 * 1000 * 1000);
+ if (IS_ERR(ap806_clks[2])) {
+ ret = PTR_ERR(ap806_clks[2]);
+ goto fail2;
+ }
+
+ /* MSS Clock is fixed clock divided by 6 */
+ name = ap806_unique_name(dev, syscon_node, "mss");
+ ap806_clks[3] = clk_register_fixed_factor(NULL, name, fixedclk_name,
+ 0, 1, 6);
+ if (IS_ERR(ap806_clks[3])) {
+ ret = PTR_ERR(ap806_clks[3]);
+ goto fail3;
+ }
+
+ /* SDIO(/eMMC) Clock is fixed clock divided by 3 */
+ name = ap806_unique_name(dev, syscon_node, "sdio");
+ ap806_clks[4] = clk_register_fixed_factor(NULL, name,
+ fixedclk_name,
+ 0, 1, 3);
+ if (IS_ERR(ap806_clks[4])) {
+ ret = PTR_ERR(ap806_clks[4]);
+ goto fail4;
+ }
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data);
+ ret = of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data);
+ if (ret)
+ goto fail_clk_add;
+
+ return 0;
+
+fail_clk_add:
+ clk_unregister_fixed_factor(ap806_clks[4]);
+fail4:
+ clk_unregister_fixed_factor(ap806_clks[3]);
+fail3:
+ clk_unregister_fixed_rate(ap806_clks[2]);
+fail2:
+ clk_unregister_fixed_rate(ap806_clks[1]);
+fail1:
+ clk_unregister_fixed_rate(ap806_clks[0]);
+fail0:
+ return ret;
+}
+
+static int ap806_syscon_legacy_probe(struct platform_device *pdev)
+{
+ dev_warn(&pdev->dev, FW_WARN "Using legacy device tree binding\n");
+ dev_warn(&pdev->dev, FW_WARN "Update your device tree:\n");
+ dev_warn(&pdev->dev, FW_WARN
+ "This binding won't be supported in future kernel\n");
+
+ return ap806_syscon_common_probe(pdev, pdev->dev.of_node);
+
+}
+
+static int ap806_clock_probe(struct platform_device *pdev)
+{
+ return ap806_syscon_common_probe(pdev, pdev->dev.of_node->parent);
+}
+
+static const struct of_device_id ap806_syscon_legacy_of_match[] = {
+ { .compatible = "marvell,ap806-system-controller", },
+ { }
+};
+
+static struct platform_driver ap806_syscon_legacy_driver = {
+ .probe = ap806_syscon_legacy_probe,
+ .driver = {
+ .name = "marvell-ap806-system-controller",
+ .of_match_table = ap806_syscon_legacy_of_match,
+ .suppress_bind_attrs = true,
+ },
+};
+builtin_platform_driver(ap806_syscon_legacy_driver);
+
+static const struct of_device_id ap806_clock_of_match[] = {
+ { .compatible = "marvell,ap806-clock", },
+ { }
+};
+
+static struct platform_driver ap806_clock_driver = {
+ .probe = ap806_clock_probe,
+ .driver = {
+ .name = "marvell-ap806-clock",
+ .of_match_table = ap806_clock_of_match,
+ .suppress_bind_attrs = true,
+ },
+};
+builtin_platform_driver(ap806_clock_driver);
diff --git a/drivers/clk/mvebu/armada-370.c b/drivers/clk/mvebu/armada-370.c
new file mode 100644
index 000000000..8fdfa9790
--- /dev/null
+++ b/drivers/clk/mvebu/armada-370.c
@@ -0,0 +1,186 @@
+/*
+ * Marvell Armada 370 SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+#define SARL 0 /* Low part [0:31] */
+#define SARL_A370_SSCG_ENABLE BIT(10)
+#define SARL_A370_PCLK_FREQ_OPT 11
+#define SARL_A370_PCLK_FREQ_OPT_MASK 0xF
+#define SARL_A370_FAB_FREQ_OPT 15
+#define SARL_A370_FAB_FREQ_OPT_MASK 0x1F
+#define SARL_A370_TCLK_FREQ_OPT 20
+#define SARL_A370_TCLK_FREQ_OPT_MASK 0x1
+
+enum { A370_CPU_TO_NBCLK, A370_CPU_TO_HCLK, A370_CPU_TO_DRAMCLK };
+
+static const struct coreclk_ratio a370_coreclk_ratios[] __initconst = {
+ { .id = A370_CPU_TO_NBCLK, .name = "nbclk" },
+ { .id = A370_CPU_TO_HCLK, .name = "hclk" },
+ { .id = A370_CPU_TO_DRAMCLK, .name = "dramclk" },
+};
+
+static const u32 a370_tclk_freqs[] __initconst = {
+ 166000000,
+ 200000000,
+};
+
+static u32 __init a370_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select = 0;
+
+ tclk_freq_select = ((readl(sar) >> SARL_A370_TCLK_FREQ_OPT) &
+ SARL_A370_TCLK_FREQ_OPT_MASK);
+ return a370_tclk_freqs[tclk_freq_select];
+}
+
+static const u32 a370_cpu_freqs[] __initconst = {
+ 400000000,
+ 533000000,
+ 667000000,
+ 800000000,
+ 1000000000,
+ 1067000000,
+ 1200000000,
+};
+
+static u32 __init a370_get_cpu_freq(void __iomem *sar)
+{
+ u32 cpu_freq;
+ u8 cpu_freq_select = 0;
+
+ cpu_freq_select = ((readl(sar) >> SARL_A370_PCLK_FREQ_OPT) &
+ SARL_A370_PCLK_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(a370_cpu_freqs)) {
+ pr_err("CPU freq select unsupported %d\n", cpu_freq_select);
+ cpu_freq = 0;
+ } else
+ cpu_freq = a370_cpu_freqs[cpu_freq_select];
+
+ return cpu_freq;
+}
+
+static const int a370_nbclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 2}, {2, 2},
+ {1, 2}, {1, 2}, {1, 1}, {2, 3},
+ {0, 1}, {1, 2}, {2, 4}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {2, 2},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int a370_hclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 6}, {2, 3},
+ {1, 3}, {1, 4}, {1, 2}, {2, 6},
+ {0, 1}, {1, 6}, {2, 10}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 2},
+ {2, 6}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int a370_dramclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 3}, {2, 3},
+ {1, 3}, {1, 2}, {1, 2}, {2, 6},
+ {0, 1}, {1, 3}, {2, 5}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init a370_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SARL_A370_FAB_FREQ_OPT) &
+ SARL_A370_FAB_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A370_CPU_TO_NBCLK:
+ *mult = a370_nbclk_ratios[opt][0];
+ *div = a370_nbclk_ratios[opt][1];
+ break;
+ case A370_CPU_TO_HCLK:
+ *mult = a370_hclk_ratios[opt][0];
+ *div = a370_hclk_ratios[opt][1];
+ break;
+ case A370_CPU_TO_DRAMCLK:
+ *mult = a370_dramclk_ratios[opt][0];
+ *div = a370_dramclk_ratios[opt][1];
+ break;
+ }
+}
+
+static bool a370_is_sscg_enabled(void __iomem *sar)
+{
+ return !(readl(sar) & SARL_A370_SSCG_ENABLE);
+}
+
+static const struct coreclk_soc_desc a370_coreclks = {
+ .get_tclk_freq = a370_get_tclk_freq,
+ .get_cpu_freq = a370_get_cpu_freq,
+ .get_clk_ratio = a370_get_clk_ratio,
+ .is_sscg_enabled = a370_is_sscg_enabled,
+ .fix_sscg_deviation = kirkwood_fix_sscg_deviation,
+ .ratios = a370_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(a370_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc a370_gating_desc[] __initconst = {
+ { "audio", NULL, 0, 0 },
+ { "pex0_en", NULL, 1, 0 },
+ { "pex1_en", NULL, 2, 0 },
+ { "ge1", NULL, 3, 0 },
+ { "ge0", NULL, 4, 0 },
+ { "pex0", "pex0_en", 5, 0 },
+ { "pex1", "pex1_en", 9, 0 },
+ { "sata0", NULL, 15, 0 },
+ { "sdio", NULL, 17, 0 },
+ { "crypto", NULL, 23, CLK_IGNORE_UNUSED },
+ { "tdm", NULL, 25, 0 },
+ { "ddr", NULL, 28, CLK_IGNORE_UNUSED },
+ { "sata1", NULL, 30, 0 },
+ { }
+};
+
+static void __init a370_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,armada-370-gating-clock");
+
+ mvebu_coreclk_setup(np, &a370_coreclks);
+
+ if (cgnp) {
+ mvebu_clk_gating_setup(cgnp, a370_gating_desc);
+ of_node_put(cgnp);
+ }
+}
+CLK_OF_DECLARE(a370_clk, "marvell,armada-370-core-clock", a370_clk_init);
+
diff --git a/drivers/clk/mvebu/armada-375.c b/drivers/clk/mvebu/armada-375.c
new file mode 100644
index 000000000..c7af2242b
--- /dev/null
+++ b/drivers/clk/mvebu/armada-375.c
@@ -0,0 +1,184 @@
+/*
+ * Marvell Armada 375 SoC clocks
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+/*
+ * For the Armada 375 SoCs, the CPU, DDR and L2 clocks frequencies are
+ * all modified at the same time, and not separately as for the Armada
+ * 370 or the Armada XP SoCs.
+ *
+ * SAR1[21:17] : CPU frequency DDR frequency L2 frequency
+ * 6 = 400 MHz 400 MHz 200 MHz
+ * 15 = 600 MHz 600 MHz 300 MHz
+ * 21 = 800 MHz 534 MHz 400 MHz
+ * 25 = 1000 MHz 500 MHz 500 MHz
+ * others reserved.
+ *
+ * SAR1[22] : TCLK frequency
+ * 0 = 166 MHz
+ * 1 = 200 MHz
+ */
+
+#define SAR1_A375_TCLK_FREQ_OPT 22
+#define SAR1_A375_TCLK_FREQ_OPT_MASK 0x1
+#define SAR1_A375_CPU_DDR_L2_FREQ_OPT 17
+#define SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+
+static const u32 armada_375_tclk_frequencies[] __initconst = {
+ 166000000,
+ 200000000,
+};
+
+static u32 __init armada_375_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar) >> SAR1_A375_TCLK_FREQ_OPT) &
+ SAR1_A375_TCLK_FREQ_OPT_MASK);
+ return armada_375_tclk_frequencies[tclk_freq_select];
+}
+
+
+static const u32 armada_375_cpu_frequencies[] __initconst = {
+ 0, 0, 0, 0, 0, 0,
+ 400000000,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 600000000,
+ 0, 0, 0, 0, 0,
+ 800000000,
+ 0, 0, 0,
+ 1000000000,
+};
+
+static u32 __init armada_375_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
+ SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_375_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ } else
+ return armada_375_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A375_CPU_TO_DDR, A375_CPU_TO_L2 };
+
+static const struct coreclk_ratio armada_375_coreclk_ratios[] __initconst = {
+ { .id = A375_CPU_TO_L2, .name = "l2clk" },
+ { .id = A375_CPU_TO_DDR, .name = "ddrclk" },
+};
+
+static const int armada_375_cpu_l2_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {1, 2}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 2},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int armada_375_cpu_ddr_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {1, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {2, 3},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {2, 3}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init armada_375_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
+ SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A375_CPU_TO_L2:
+ *mult = armada_375_cpu_l2_ratios[opt][0];
+ *div = armada_375_cpu_l2_ratios[opt][1];
+ break;
+ case A375_CPU_TO_DDR:
+ *mult = armada_375_cpu_ddr_ratios[opt][0];
+ *div = armada_375_cpu_ddr_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc armada_375_coreclks = {
+ .get_tclk_freq = armada_375_get_tclk_freq,
+ .get_cpu_freq = armada_375_get_cpu_freq,
+ .get_clk_ratio = armada_375_get_clk_ratio,
+ .ratios = armada_375_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_375_coreclk_ratios),
+};
+
+static void __init armada_375_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_375_coreclks);
+}
+CLK_OF_DECLARE(armada_375_core_clk, "marvell,armada-375-core-clock",
+ armada_375_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_375_gating_desc[] __initconst = {
+ { "mu", NULL, 2 },
+ { "pp", NULL, 3 },
+ { "ptp", NULL, 4 },
+ { "pex0", NULL, 5 },
+ { "pex1", NULL, 6 },
+ { "audio", NULL, 8 },
+ { "nd_clk", "nand", 11 },
+ { "sata0_link", "sata0_core", 14 },
+ { "sata0_core", NULL, 15 },
+ { "usb3", NULL, 16 },
+ { "sdio", NULL, 17 },
+ { "usb", NULL, 18 },
+ { "gop", NULL, 19 },
+ { "sata1_link", "sata1_core", 20 },
+ { "sata1_core", NULL, 21 },
+ { "xor0", NULL, 22 },
+ { "xor1", NULL, 23 },
+ { "copro", NULL, 24 },
+ { "tdm", NULL, 25 },
+ { "crypto0_enc", NULL, 28 },
+ { "crypto0_core", NULL, 29 },
+ { "crypto1_enc", NULL, 30 },
+ { "crypto1_core", NULL, 31 },
+ { }
+};
+
+static void __init armada_375_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_375_gating_desc);
+}
+CLK_OF_DECLARE(armada_375_clk_gating, "marvell,armada-375-gating-clock",
+ armada_375_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-37xx-periph.c b/drivers/clk/mvebu/armada-37xx-periph.c
new file mode 100644
index 000000000..5d10733d6
--- /dev/null
+++ b/drivers/clk/mvebu/armada-37xx-periph.c
@@ -0,0 +1,762 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Marvell Armada 37xx SoC Peripheral clocks
+ *
+ * Copyright (C) 2016 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * Most of the peripheral clocks can be modelled like this:
+ * _____ _______ _______
+ * TBG-A-P --| | | | | | ______
+ * TBG-B-P --| Mux |--| /div1 |--| /div2 |--| Gate |--> perip_clk
+ * TBG-A-S --| | | | | | |______|
+ * TBG-B-S --|_____| |_______| |_______|
+ *
+ * However some clocks may use only one or two block or and use the
+ * xtal clock as parent.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define TBG_SEL 0x0
+#define DIV_SEL0 0x4
+#define DIV_SEL1 0x8
+#define DIV_SEL2 0xC
+#define CLK_SEL 0x10
+#define CLK_DIS 0x14
+
+#define ARMADA_37XX_DVFS_LOAD_1 1
+#define LOAD_LEVEL_NR 4
+
+#define ARMADA_37XX_NB_L0L1 0x18
+#define ARMADA_37XX_NB_L2L3 0x1C
+#define ARMADA_37XX_NB_TBG_DIV_OFF 13
+#define ARMADA_37XX_NB_TBG_DIV_MASK 0x7
+#define ARMADA_37XX_NB_CLK_SEL_OFF 11
+#define ARMADA_37XX_NB_CLK_SEL_MASK 0x1
+#define ARMADA_37XX_NB_TBG_SEL_OFF 9
+#define ARMADA_37XX_NB_TBG_SEL_MASK 0x3
+#define ARMADA_37XX_NB_CONFIG_SHIFT 16
+#define ARMADA_37XX_NB_DYN_MOD 0x24
+#define ARMADA_37XX_NB_DFS_EN 31
+#define ARMADA_37XX_NB_CPU_LOAD 0x30
+#define ARMADA_37XX_NB_CPU_LOAD_MASK 0x3
+#define ARMADA_37XX_DVFS_LOAD_0 0
+#define ARMADA_37XX_DVFS_LOAD_1 1
+#define ARMADA_37XX_DVFS_LOAD_2 2
+#define ARMADA_37XX_DVFS_LOAD_3 3
+
+struct clk_periph_driver_data {
+ struct clk_hw_onecell_data *hw_data;
+ spinlock_t lock;
+};
+
+struct clk_double_div {
+ struct clk_hw hw;
+ void __iomem *reg1;
+ u8 shift1;
+ void __iomem *reg2;
+ u8 shift2;
+};
+
+struct clk_pm_cpu {
+ struct clk_hw hw;
+ void __iomem *reg_mux;
+ u8 shift_mux;
+ u32 mask_mux;
+ void __iomem *reg_div;
+ u8 shift_div;
+ struct regmap *nb_pm_base;
+ unsigned long l1_expiration;
+};
+
+#define to_clk_double_div(_hw) container_of(_hw, struct clk_double_div, hw)
+#define to_clk_pm_cpu(_hw) container_of(_hw, struct clk_pm_cpu, hw)
+
+struct clk_periph_data {
+ const char *name;
+ const char * const *parent_names;
+ int num_parents;
+ struct clk_hw *mux_hw;
+ struct clk_hw *rate_hw;
+ struct clk_hw *gate_hw;
+ struct clk_hw *muxrate_hw;
+ bool is_double_div;
+};
+
+static const struct clk_div_table clk_table6[] = {
+ { .val = 1, .div = 1, },
+ { .val = 2, .div = 2, },
+ { .val = 3, .div = 3, },
+ { .val = 4, .div = 4, },
+ { .val = 5, .div = 5, },
+ { .val = 6, .div = 6, },
+ { .val = 0, .div = 0, }, /* last entry */
+};
+
+static const struct clk_div_table clk_table1[] = {
+ { .val = 0, .div = 1, },
+ { .val = 1, .div = 2, },
+ { .val = 0, .div = 0, }, /* last entry */
+};
+
+static const struct clk_div_table clk_table2[] = {
+ { .val = 0, .div = 2, },
+ { .val = 1, .div = 4, },
+ { .val = 0, .div = 0, }, /* last entry */
+};
+
+static const struct clk_ops clk_double_div_ops;
+static const struct clk_ops clk_pm_cpu_ops;
+
+#define PERIPH_GATE(_name, _bit) \
+struct clk_gate gate_##_name = { \
+ .reg = (void *)CLK_DIS, \
+ .bit_idx = _bit, \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_gate_ops, \
+ } \
+};
+
+#define PERIPH_MUX(_name, _shift) \
+struct clk_mux mux_##_name = { \
+ .reg = (void *)TBG_SEL, \
+ .shift = _shift, \
+ .mask = 3, \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_mux_ro_ops, \
+ } \
+};
+
+#define PERIPH_DOUBLEDIV(_name, _reg1, _reg2, _shift1, _shift2) \
+struct clk_double_div rate_##_name = { \
+ .reg1 = (void *)_reg1, \
+ .reg2 = (void *)_reg2, \
+ .shift1 = _shift1, \
+ .shift2 = _shift2, \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_double_div_ops, \
+ } \
+};
+
+#define PERIPH_DIV(_name, _reg, _shift, _table) \
+struct clk_divider rate_##_name = { \
+ .reg = (void *)_reg, \
+ .table = _table, \
+ .shift = _shift, \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_divider_ro_ops, \
+ } \
+};
+
+#define PERIPH_PM_CPU(_name, _shift1, _reg, _shift2) \
+struct clk_pm_cpu muxrate_##_name = { \
+ .reg_mux = (void *)TBG_SEL, \
+ .mask_mux = 3, \
+ .shift_mux = _shift1, \
+ .reg_div = (void *)_reg, \
+ .shift_div = _shift2, \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_pm_cpu_ops, \
+ } \
+};
+
+#define PERIPH_CLK_FULL_DD(_name, _bit, _shift, _reg1, _reg2, _shift1, _shift2)\
+static PERIPH_GATE(_name, _bit); \
+static PERIPH_MUX(_name, _shift); \
+static PERIPH_DOUBLEDIV(_name, _reg1, _reg2, _shift1, _shift2);
+
+#define PERIPH_CLK_FULL(_name, _bit, _shift, _reg, _shift1, _table) \
+static PERIPH_GATE(_name, _bit); \
+static PERIPH_MUX(_name, _shift); \
+static PERIPH_DIV(_name, _reg, _shift1, _table);
+
+#define PERIPH_CLK_GATE_DIV(_name, _bit, _reg, _shift, _table) \
+static PERIPH_GATE(_name, _bit); \
+static PERIPH_DIV(_name, _reg, _shift, _table);
+
+#define PERIPH_CLK_MUX_DD(_name, _shift, _reg1, _reg2, _shift1, _shift2)\
+static PERIPH_MUX(_name, _shift); \
+static PERIPH_DOUBLEDIV(_name, _reg1, _reg2, _shift1, _shift2);
+
+#define REF_CLK_FULL(_name) \
+ { .name = #_name, \
+ .parent_names = (const char *[]){ "TBG-A-P", \
+ "TBG-B-P", "TBG-A-S", "TBG-B-S"}, \
+ .num_parents = 4, \
+ .mux_hw = &mux_##_name.hw, \
+ .gate_hw = &gate_##_name.hw, \
+ .rate_hw = &rate_##_name.hw, \
+ }
+
+#define REF_CLK_FULL_DD(_name) \
+ { .name = #_name, \
+ .parent_names = (const char *[]){ "TBG-A-P", \
+ "TBG-B-P", "TBG-A-S", "TBG-B-S"}, \
+ .num_parents = 4, \
+ .mux_hw = &mux_##_name.hw, \
+ .gate_hw = &gate_##_name.hw, \
+ .rate_hw = &rate_##_name.hw, \
+ .is_double_div = true, \
+ }
+
+#define REF_CLK_GATE(_name, _parent_name) \
+ { .name = #_name, \
+ .parent_names = (const char *[]){ _parent_name}, \
+ .num_parents = 1, \
+ .gate_hw = &gate_##_name.hw, \
+ }
+
+#define REF_CLK_GATE_DIV(_name, _parent_name) \
+ { .name = #_name, \
+ .parent_names = (const char *[]){ _parent_name}, \
+ .num_parents = 1, \
+ .gate_hw = &gate_##_name.hw, \
+ .rate_hw = &rate_##_name.hw, \
+ }
+
+#define REF_CLK_PM_CPU(_name) \
+ { .name = #_name, \
+ .parent_names = (const char *[]){ "TBG-A-P", \
+ "TBG-B-P", "TBG-A-S", "TBG-B-S"}, \
+ .num_parents = 4, \
+ .muxrate_hw = &muxrate_##_name.hw, \
+ }
+
+#define REF_CLK_MUX_DD(_name) \
+ { .name = #_name, \
+ .parent_names = (const char *[]){ "TBG-A-P", \
+ "TBG-B-P", "TBG-A-S", "TBG-B-S"}, \
+ .num_parents = 4, \
+ .mux_hw = &mux_##_name.hw, \
+ .rate_hw = &rate_##_name.hw, \
+ .is_double_div = true, \
+ }
+
+/* NB periph clocks */
+PERIPH_CLK_FULL_DD(mmc, 2, 0, DIV_SEL2, DIV_SEL2, 16, 13);
+PERIPH_CLK_FULL_DD(sata_host, 3, 2, DIV_SEL2, DIV_SEL2, 10, 7);
+PERIPH_CLK_FULL_DD(sec_at, 6, 4, DIV_SEL1, DIV_SEL1, 3, 0);
+PERIPH_CLK_FULL_DD(sec_dap, 7, 6, DIV_SEL1, DIV_SEL1, 9, 6);
+PERIPH_CLK_FULL_DD(tscem, 8, 8, DIV_SEL1, DIV_SEL1, 15, 12);
+PERIPH_CLK_FULL(tscem_tmx, 10, 10, DIV_SEL1, 18, clk_table6);
+static PERIPH_GATE(avs, 11);
+PERIPH_CLK_FULL_DD(pwm, 13, 14, DIV_SEL0, DIV_SEL0, 3, 0);
+PERIPH_CLK_FULL_DD(sqf, 12, 12, DIV_SEL1, DIV_SEL1, 27, 24);
+static PERIPH_GATE(i2c_2, 16);
+static PERIPH_GATE(i2c_1, 17);
+PERIPH_CLK_GATE_DIV(ddr_phy, 19, DIV_SEL0, 18, clk_table2);
+PERIPH_CLK_FULL_DD(ddr_fclk, 21, 16, DIV_SEL0, DIV_SEL0, 15, 12);
+PERIPH_CLK_FULL(trace, 22, 18, DIV_SEL0, 20, clk_table6);
+PERIPH_CLK_FULL(counter, 23, 20, DIV_SEL0, 23, clk_table6);
+PERIPH_CLK_FULL_DD(eip97, 24, 24, DIV_SEL2, DIV_SEL2, 22, 19);
+static PERIPH_PM_CPU(cpu, 22, DIV_SEL0, 28);
+
+static struct clk_periph_data data_nb[] = {
+ REF_CLK_FULL_DD(mmc),
+ REF_CLK_FULL_DD(sata_host),
+ REF_CLK_FULL_DD(sec_at),
+ REF_CLK_FULL_DD(sec_dap),
+ REF_CLK_FULL_DD(tscem),
+ REF_CLK_FULL(tscem_tmx),
+ REF_CLK_GATE(avs, "xtal"),
+ REF_CLK_FULL_DD(sqf),
+ REF_CLK_FULL_DD(pwm),
+ REF_CLK_GATE(i2c_2, "xtal"),
+ REF_CLK_GATE(i2c_1, "xtal"),
+ REF_CLK_GATE_DIV(ddr_phy, "TBG-A-S"),
+ REF_CLK_FULL_DD(ddr_fclk),
+ REF_CLK_FULL(trace),
+ REF_CLK_FULL(counter),
+ REF_CLK_FULL_DD(eip97),
+ REF_CLK_PM_CPU(cpu),
+ { },
+};
+
+/* SB periph clocks */
+PERIPH_CLK_MUX_DD(gbe_50, 6, DIV_SEL2, DIV_SEL2, 6, 9);
+PERIPH_CLK_MUX_DD(gbe_core, 8, DIV_SEL1, DIV_SEL1, 18, 21);
+PERIPH_CLK_MUX_DD(gbe_125, 10, DIV_SEL1, DIV_SEL1, 6, 9);
+static PERIPH_GATE(gbe1_50, 0);
+static PERIPH_GATE(gbe0_50, 1);
+static PERIPH_GATE(gbe1_125, 2);
+static PERIPH_GATE(gbe0_125, 3);
+PERIPH_CLK_GATE_DIV(gbe1_core, 4, DIV_SEL1, 13, clk_table1);
+PERIPH_CLK_GATE_DIV(gbe0_core, 5, DIV_SEL1, 14, clk_table1);
+PERIPH_CLK_GATE_DIV(gbe_bm, 12, DIV_SEL1, 0, clk_table1);
+PERIPH_CLK_FULL_DD(sdio, 11, 14, DIV_SEL0, DIV_SEL0, 3, 6);
+PERIPH_CLK_FULL_DD(usb32_usb2_sys, 16, 16, DIV_SEL0, DIV_SEL0, 9, 12);
+PERIPH_CLK_FULL_DD(usb32_ss_sys, 17, 18, DIV_SEL0, DIV_SEL0, 15, 18);
+
+static struct clk_periph_data data_sb[] = {
+ REF_CLK_MUX_DD(gbe_50),
+ REF_CLK_MUX_DD(gbe_core),
+ REF_CLK_MUX_DD(gbe_125),
+ REF_CLK_GATE(gbe1_50, "gbe_50"),
+ REF_CLK_GATE(gbe0_50, "gbe_50"),
+ REF_CLK_GATE(gbe1_125, "gbe_125"),
+ REF_CLK_GATE(gbe0_125, "gbe_125"),
+ REF_CLK_GATE_DIV(gbe1_core, "gbe_core"),
+ REF_CLK_GATE_DIV(gbe0_core, "gbe_core"),
+ REF_CLK_GATE_DIV(gbe_bm, "gbe_core"),
+ REF_CLK_FULL_DD(sdio),
+ REF_CLK_FULL_DD(usb32_usb2_sys),
+ REF_CLK_FULL_DD(usb32_ss_sys),
+ { },
+};
+
+static unsigned int get_div(void __iomem *reg, int shift)
+{
+ u32 val;
+
+ val = (readl(reg) >> shift) & 0x7;
+ if (val > 6)
+ return 0;
+ return val;
+}
+
+static unsigned long clk_double_div_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_double_div *double_div = to_clk_double_div(hw);
+ unsigned int div;
+
+ div = get_div(double_div->reg1, double_div->shift1);
+ div *= get_div(double_div->reg2, double_div->shift2);
+
+ return DIV_ROUND_UP_ULL((u64)parent_rate, div);
+}
+
+static const struct clk_ops clk_double_div_ops = {
+ .recalc_rate = clk_double_div_recalc_rate,
+};
+
+static void armada_3700_pm_dvfs_update_regs(unsigned int load_level,
+ unsigned int *reg,
+ unsigned int *offset)
+{
+ if (load_level <= ARMADA_37XX_DVFS_LOAD_1)
+ *reg = ARMADA_37XX_NB_L0L1;
+ else
+ *reg = ARMADA_37XX_NB_L2L3;
+
+ if (load_level == ARMADA_37XX_DVFS_LOAD_0 ||
+ load_level == ARMADA_37XX_DVFS_LOAD_2)
+ *offset += ARMADA_37XX_NB_CONFIG_SHIFT;
+}
+
+static bool armada_3700_pm_dvfs_is_enabled(struct regmap *base)
+{
+ unsigned int val, reg = ARMADA_37XX_NB_DYN_MOD;
+
+ if (IS_ERR(base))
+ return false;
+
+ regmap_read(base, reg, &val);
+
+ return !!(val & BIT(ARMADA_37XX_NB_DFS_EN));
+}
+
+static unsigned int armada_3700_pm_dvfs_get_cpu_div(struct regmap *base)
+{
+ unsigned int reg = ARMADA_37XX_NB_CPU_LOAD;
+ unsigned int offset = ARMADA_37XX_NB_TBG_DIV_OFF;
+ unsigned int load_level, div;
+
+ /*
+ * This function is always called after the function
+ * armada_3700_pm_dvfs_is_enabled, so no need to check again
+ * if the base is valid.
+ */
+ regmap_read(base, reg, &load_level);
+
+ /*
+ * The register and the offset inside this register accessed to
+ * read the current divider depend on the load level
+ */
+ load_level &= ARMADA_37XX_NB_CPU_LOAD_MASK;
+ armada_3700_pm_dvfs_update_regs(load_level, &reg, &offset);
+
+ regmap_read(base, reg, &div);
+
+ return (div >> offset) & ARMADA_37XX_NB_TBG_DIV_MASK;
+}
+
+static unsigned int armada_3700_pm_dvfs_get_cpu_parent(struct regmap *base)
+{
+ unsigned int reg = ARMADA_37XX_NB_CPU_LOAD;
+ unsigned int offset = ARMADA_37XX_NB_TBG_SEL_OFF;
+ unsigned int load_level, sel;
+
+ /*
+ * This function is always called after the function
+ * armada_3700_pm_dvfs_is_enabled, so no need to check again
+ * if the base is valid
+ */
+ regmap_read(base, reg, &load_level);
+
+ /*
+ * The register and the offset inside this register accessed to
+ * read the current divider depend on the load level
+ */
+ load_level &= ARMADA_37XX_NB_CPU_LOAD_MASK;
+ armada_3700_pm_dvfs_update_regs(load_level, &reg, &offset);
+
+ regmap_read(base, reg, &sel);
+
+ return (sel >> offset) & ARMADA_37XX_NB_TBG_SEL_MASK;
+}
+
+static u8 clk_pm_cpu_get_parent(struct clk_hw *hw)
+{
+ struct clk_pm_cpu *pm_cpu = to_clk_pm_cpu(hw);
+ u32 val;
+
+ if (armada_3700_pm_dvfs_is_enabled(pm_cpu->nb_pm_base)) {
+ val = armada_3700_pm_dvfs_get_cpu_parent(pm_cpu->nb_pm_base);
+ } else {
+ val = readl(pm_cpu->reg_mux) >> pm_cpu->shift_mux;
+ val &= pm_cpu->mask_mux;
+ }
+
+ return val;
+}
+
+static unsigned long clk_pm_cpu_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_pm_cpu *pm_cpu = to_clk_pm_cpu(hw);
+ unsigned int div;
+
+ if (armada_3700_pm_dvfs_is_enabled(pm_cpu->nb_pm_base))
+ div = armada_3700_pm_dvfs_get_cpu_div(pm_cpu->nb_pm_base);
+ else
+ div = get_div(pm_cpu->reg_div, pm_cpu->shift_div);
+ return DIV_ROUND_UP_ULL((u64)parent_rate, div);
+}
+
+static long clk_pm_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct clk_pm_cpu *pm_cpu = to_clk_pm_cpu(hw);
+ struct regmap *base = pm_cpu->nb_pm_base;
+ unsigned int div = *parent_rate / rate;
+ unsigned int load_level;
+ /* only available when DVFS is enabled */
+ if (!armada_3700_pm_dvfs_is_enabled(base))
+ return -EINVAL;
+
+ for (load_level = 0; load_level < LOAD_LEVEL_NR; load_level++) {
+ unsigned int reg, val, offset = ARMADA_37XX_NB_TBG_DIV_OFF;
+
+ armada_3700_pm_dvfs_update_regs(load_level, &reg, &offset);
+
+ regmap_read(base, reg, &val);
+
+ val >>= offset;
+ val &= ARMADA_37XX_NB_TBG_DIV_MASK;
+ if (val == div)
+ /*
+ * We found a load level matching the target
+ * divider, switch to this load level and
+ * return.
+ */
+ return *parent_rate / div;
+ }
+
+ /* We didn't find any valid divider */
+ return -EINVAL;
+}
+
+/*
+ * Workaround when base CPU frequnecy is 1000 or 1200 MHz
+ *
+ * Switching the CPU from the L2 or L3 frequencies (250/300 or 200 MHz
+ * respectively) to L0 frequency (1/1.2 GHz) requires a significant
+ * amount of time to let VDD stabilize to the appropriate
+ * voltage. This amount of time is large enough that it cannot be
+ * covered by the hardware countdown register. Due to this, the CPU
+ * might start operating at L0 before the voltage is stabilized,
+ * leading to CPU stalls.
+ *
+ * To work around this problem, we prevent switching directly from the
+ * L2/L3 frequencies to the L0 frequency, and instead switch to the L1
+ * frequency in-between. The sequence therefore becomes:
+ * 1. First switch from L2/L3 (200/250/300 MHz) to L1 (500/600 MHz)
+ * 2. Sleep 20ms for stabling VDD voltage
+ * 3. Then switch from L1 (500/600 MHz) to L0 (1000/1200 MHz).
+ */
+static void clk_pm_cpu_set_rate_wa(struct clk_pm_cpu *pm_cpu,
+ unsigned int new_level, unsigned long rate,
+ struct regmap *base)
+{
+ unsigned int cur_level;
+
+ regmap_read(base, ARMADA_37XX_NB_CPU_LOAD, &cur_level);
+ cur_level &= ARMADA_37XX_NB_CPU_LOAD_MASK;
+
+ if (cur_level == new_level)
+ return;
+
+ /*
+ * System wants to go to L1 on its own. If we are going from L2/L3,
+ * remember when 20ms will expire. If from L0, set the value so that
+ * next switch to L0 won't have to wait.
+ */
+ if (new_level == ARMADA_37XX_DVFS_LOAD_1) {
+ if (cur_level == ARMADA_37XX_DVFS_LOAD_0)
+ pm_cpu->l1_expiration = jiffies;
+ else
+ pm_cpu->l1_expiration = jiffies + msecs_to_jiffies(20);
+ return;
+ }
+
+ /*
+ * If we are setting to L2/L3, just invalidate L1 expiration time,
+ * sleeping is not needed.
+ */
+ if (rate < 1000*1000*1000)
+ goto invalidate_l1_exp;
+
+ /*
+ * We are going to L0 with rate >= 1GHz. Check whether we have been at
+ * L1 for long enough time. If not, go to L1 for 20ms.
+ */
+ if (pm_cpu->l1_expiration && jiffies >= pm_cpu->l1_expiration)
+ goto invalidate_l1_exp;
+
+ regmap_update_bits(base, ARMADA_37XX_NB_CPU_LOAD,
+ ARMADA_37XX_NB_CPU_LOAD_MASK,
+ ARMADA_37XX_DVFS_LOAD_1);
+ msleep(20);
+
+invalidate_l1_exp:
+ pm_cpu->l1_expiration = 0;
+}
+
+static int clk_pm_cpu_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_pm_cpu *pm_cpu = to_clk_pm_cpu(hw);
+ struct regmap *base = pm_cpu->nb_pm_base;
+ unsigned int div = parent_rate / rate;
+ unsigned int load_level;
+
+ /* only available when DVFS is enabled */
+ if (!armada_3700_pm_dvfs_is_enabled(base))
+ return -EINVAL;
+
+ for (load_level = 0; load_level < LOAD_LEVEL_NR; load_level++) {
+ unsigned int reg, mask, val,
+ offset = ARMADA_37XX_NB_TBG_DIV_OFF;
+
+ armada_3700_pm_dvfs_update_regs(load_level, &reg, &offset);
+
+ regmap_read(base, reg, &val);
+ val >>= offset;
+ val &= ARMADA_37XX_NB_TBG_DIV_MASK;
+
+ if (val == div) {
+ /*
+ * We found a load level matching the target
+ * divider, switch to this load level and
+ * return.
+ */
+ reg = ARMADA_37XX_NB_CPU_LOAD;
+ mask = ARMADA_37XX_NB_CPU_LOAD_MASK;
+
+ /* Apply workaround when base CPU frequency is 1000 or 1200 MHz */
+ if (parent_rate >= 1000*1000*1000)
+ clk_pm_cpu_set_rate_wa(pm_cpu, load_level, rate, base);
+
+ regmap_update_bits(base, reg, mask, load_level);
+
+ return rate;
+ }
+ }
+
+ /* We didn't find any valid divider */
+ return -EINVAL;
+}
+
+static const struct clk_ops clk_pm_cpu_ops = {
+ .get_parent = clk_pm_cpu_get_parent,
+ .round_rate = clk_pm_cpu_round_rate,
+ .set_rate = clk_pm_cpu_set_rate,
+ .recalc_rate = clk_pm_cpu_recalc_rate,
+};
+
+static const struct of_device_id armada_3700_periph_clock_of_match[] = {
+ { .compatible = "marvell,armada-3700-periph-clock-nb",
+ .data = data_nb, },
+ { .compatible = "marvell,armada-3700-periph-clock-sb",
+ .data = data_sb, },
+ { }
+};
+
+static int armada_3700_add_composite_clk(const struct clk_periph_data *data,
+ void __iomem *reg, spinlock_t *lock,
+ struct device *dev, struct clk_hw **hw)
+{
+ const struct clk_ops *mux_ops = NULL, *gate_ops = NULL,
+ *rate_ops = NULL;
+ struct clk_hw *mux_hw = NULL, *gate_hw = NULL, *rate_hw = NULL;
+
+ if (data->mux_hw) {
+ struct clk_mux *mux;
+
+ mux_hw = data->mux_hw;
+ mux = to_clk_mux(mux_hw);
+ mux->lock = lock;
+ mux_ops = mux_hw->init->ops;
+ mux->reg = reg + (u64)mux->reg;
+ }
+
+ if (data->gate_hw) {
+ struct clk_gate *gate;
+
+ gate_hw = data->gate_hw;
+ gate = to_clk_gate(gate_hw);
+ gate->lock = lock;
+ gate_ops = gate_hw->init->ops;
+ gate->reg = reg + (u64)gate->reg;
+ gate->flags = CLK_GATE_SET_TO_DISABLE;
+ }
+
+ if (data->rate_hw) {
+ rate_hw = data->rate_hw;
+ rate_ops = rate_hw->init->ops;
+ if (data->is_double_div) {
+ struct clk_double_div *rate;
+
+ rate = to_clk_double_div(rate_hw);
+ rate->reg1 = reg + (u64)rate->reg1;
+ rate->reg2 = reg + (u64)rate->reg2;
+ } else {
+ struct clk_divider *rate = to_clk_divider(rate_hw);
+ const struct clk_div_table *clkt;
+ int table_size = 0;
+
+ rate->reg = reg + (u64)rate->reg;
+ for (clkt = rate->table; clkt->div; clkt++)
+ table_size++;
+ rate->width = order_base_2(table_size);
+ rate->lock = lock;
+ }
+ }
+
+ if (data->muxrate_hw) {
+ struct clk_pm_cpu *pmcpu_clk;
+ struct clk_hw *muxrate_hw = data->muxrate_hw;
+ struct regmap *map;
+
+ pmcpu_clk = to_clk_pm_cpu(muxrate_hw);
+ pmcpu_clk->reg_mux = reg + (u64)pmcpu_clk->reg_mux;
+ pmcpu_clk->reg_div = reg + (u64)pmcpu_clk->reg_div;
+
+ mux_hw = muxrate_hw;
+ rate_hw = muxrate_hw;
+ mux_ops = muxrate_hw->init->ops;
+ rate_ops = muxrate_hw->init->ops;
+
+ map = syscon_regmap_lookup_by_compatible(
+ "marvell,armada-3700-nb-pm");
+ pmcpu_clk->nb_pm_base = map;
+ }
+
+ *hw = clk_hw_register_composite(dev, data->name, data->parent_names,
+ data->num_parents, mux_hw,
+ mux_ops, rate_hw, rate_ops,
+ gate_hw, gate_ops, CLK_IGNORE_UNUSED);
+
+ return PTR_ERR_OR_ZERO(*hw);
+}
+
+static int armada_3700_periph_clock_probe(struct platform_device *pdev)
+{
+ struct clk_periph_driver_data *driver_data;
+ struct device_node *np = pdev->dev.of_node;
+ const struct clk_periph_data *data;
+ struct device *dev = &pdev->dev;
+ int num_periph = 0, i, ret;
+ struct resource *res;
+ void __iomem *reg;
+
+ data = of_device_get_match_data(dev);
+ if (!data)
+ return -ENODEV;
+
+ while (data[num_periph].name)
+ num_periph++;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ reg = devm_ioremap_resource(dev, res);
+ if (IS_ERR(reg))
+ return PTR_ERR(reg);
+
+ driver_data = devm_kzalloc(dev, sizeof(*driver_data), GFP_KERNEL);
+ if (!driver_data)
+ return -ENOMEM;
+
+ driver_data->hw_data = devm_kzalloc(dev,
+ struct_size(driver_data->hw_data,
+ hws, num_periph),
+ GFP_KERNEL);
+ if (!driver_data->hw_data)
+ return -ENOMEM;
+ driver_data->hw_data->num = num_periph;
+
+ spin_lock_init(&driver_data->lock);
+
+ for (i = 0; i < num_periph; i++) {
+ struct clk_hw **hw = &driver_data->hw_data->hws[i];
+
+ if (armada_3700_add_composite_clk(&data[i], reg,
+ &driver_data->lock, dev, hw))
+ dev_err(dev, "Can't register periph clock %s\n",
+ data[i].name);
+ }
+
+ ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get,
+ driver_data->hw_data);
+ if (ret) {
+ for (i = 0; i < num_periph; i++)
+ clk_hw_unregister(driver_data->hw_data->hws[i]);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, driver_data);
+ return 0;
+}
+
+static int armada_3700_periph_clock_remove(struct platform_device *pdev)
+{
+ struct clk_periph_driver_data *data = platform_get_drvdata(pdev);
+ struct clk_hw_onecell_data *hw_data = data->hw_data;
+ int i;
+
+ of_clk_del_provider(pdev->dev.of_node);
+
+ for (i = 0; i < hw_data->num; i++)
+ clk_hw_unregister(hw_data->hws[i]);
+
+ return 0;
+}
+
+static struct platform_driver armada_3700_periph_clock_driver = {
+ .probe = armada_3700_periph_clock_probe,
+ .remove = armada_3700_periph_clock_remove,
+ .driver = {
+ .name = "marvell-armada-3700-periph-clock",
+ .of_match_table = armada_3700_periph_clock_of_match,
+ },
+};
+
+builtin_platform_driver(armada_3700_periph_clock_driver);
diff --git a/drivers/clk/mvebu/armada-37xx-tbg.c b/drivers/clk/mvebu/armada-37xx-tbg.c
new file mode 100644
index 000000000..7ff041f73
--- /dev/null
+++ b/drivers/clk/mvebu/armada-37xx-tbg.c
@@ -0,0 +1,158 @@
+/*
+ * Marvell Armada 37xx SoC Time Base Generator clocks
+ *
+ * Copyright (C) 2016 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2 or later. This program is licensed "as is"
+ * without any warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#define NUM_TBG 4
+
+#define TBG_CTRL0 0x4
+#define TBG_CTRL1 0x8
+#define TBG_CTRL7 0x20
+#define TBG_CTRL8 0x30
+
+#define TBG_DIV_MASK 0x1FF
+
+#define TBG_A_REFDIV 0
+#define TBG_B_REFDIV 16
+
+#define TBG_A_FBDIV 2
+#define TBG_B_FBDIV 18
+
+#define TBG_A_VCODIV_SE 0
+#define TBG_B_VCODIV_SE 16
+
+#define TBG_A_VCODIV_DIFF 1
+#define TBG_B_VCODIV_DIFF 17
+
+struct tbg_def {
+ char *name;
+ u32 refdiv_offset;
+ u32 fbdiv_offset;
+ u32 vcodiv_reg;
+ u32 vcodiv_offset;
+};
+
+static const struct tbg_def tbg[NUM_TBG] = {
+ {"TBG-A-P", TBG_A_REFDIV, TBG_A_FBDIV, TBG_CTRL8, TBG_A_VCODIV_DIFF},
+ {"TBG-B-P", TBG_B_REFDIV, TBG_B_FBDIV, TBG_CTRL8, TBG_B_VCODIV_DIFF},
+ {"TBG-A-S", TBG_A_REFDIV, TBG_A_FBDIV, TBG_CTRL1, TBG_A_VCODIV_SE},
+ {"TBG-B-S", TBG_B_REFDIV, TBG_B_FBDIV, TBG_CTRL1, TBG_B_VCODIV_SE},
+};
+
+static unsigned int tbg_get_mult(void __iomem *reg, const struct tbg_def *ptbg)
+{
+ u32 val;
+
+ val = readl(reg + TBG_CTRL0);
+
+ return ((val >> ptbg->fbdiv_offset) & TBG_DIV_MASK) << 2;
+}
+
+static unsigned int tbg_get_div(void __iomem *reg, const struct tbg_def *ptbg)
+{
+ u32 val;
+ unsigned int div;
+
+ val = readl(reg + TBG_CTRL7);
+
+ div = (val >> ptbg->refdiv_offset) & TBG_DIV_MASK;
+ if (div == 0)
+ div = 1;
+ val = readl(reg + ptbg->vcodiv_reg);
+
+ div *= 1 << ((val >> ptbg->vcodiv_offset) & TBG_DIV_MASK);
+
+ return div;
+}
+
+
+static int armada_3700_tbg_clock_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct clk_hw_onecell_data *hw_tbg_data;
+ struct device *dev = &pdev->dev;
+ const char *parent_name;
+ struct resource *res;
+ struct clk *parent;
+ void __iomem *reg;
+ int i, ret;
+
+ hw_tbg_data = devm_kzalloc(&pdev->dev,
+ struct_size(hw_tbg_data, hws, NUM_TBG),
+ GFP_KERNEL);
+ if (!hw_tbg_data)
+ return -ENOMEM;
+ hw_tbg_data->num = NUM_TBG;
+ platform_set_drvdata(pdev, hw_tbg_data);
+
+ parent = devm_clk_get(dev, NULL);
+ if (IS_ERR(parent)) {
+ dev_err(dev, "Could get the clock parent\n");
+ return -EINVAL;
+ }
+ parent_name = __clk_get_name(parent);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ reg = devm_ioremap_resource(dev, res);
+ if (IS_ERR(reg))
+ return PTR_ERR(reg);
+
+ for (i = 0; i < NUM_TBG; i++) {
+ const char *name;
+ unsigned int mult, div;
+
+ name = tbg[i].name;
+ mult = tbg_get_mult(reg, &tbg[i]);
+ div = tbg_get_div(reg, &tbg[i]);
+ hw_tbg_data->hws[i] = clk_hw_register_fixed_factor(NULL, name,
+ parent_name, 0, mult, div);
+ if (IS_ERR(hw_tbg_data->hws[i]))
+ dev_err(dev, "Can't register TBG clock %s\n", name);
+ }
+
+ ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, hw_tbg_data);
+
+ return ret;
+}
+
+static int armada_3700_tbg_clock_remove(struct platform_device *pdev)
+{
+ int i;
+ struct clk_hw_onecell_data *hw_tbg_data = platform_get_drvdata(pdev);
+
+ of_clk_del_provider(pdev->dev.of_node);
+ for (i = 0; i < hw_tbg_data->num; i++)
+ clk_hw_unregister_fixed_factor(hw_tbg_data->hws[i]);
+
+ return 0;
+}
+
+static const struct of_device_id armada_3700_tbg_clock_of_match[] = {
+ { .compatible = "marvell,armada-3700-tbg-clock", },
+ { }
+};
+
+static struct platform_driver armada_3700_tbg_clock_driver = {
+ .probe = armada_3700_tbg_clock_probe,
+ .remove = armada_3700_tbg_clock_remove,
+ .driver = {
+ .name = "marvell-armada-3700-tbg-clock",
+ .of_match_table = armada_3700_tbg_clock_of_match,
+ },
+};
+
+builtin_platform_driver(armada_3700_tbg_clock_driver);
diff --git a/drivers/clk/mvebu/armada-37xx-xtal.c b/drivers/clk/mvebu/armada-37xx-xtal.c
new file mode 100644
index 000000000..537051495
--- /dev/null
+++ b/drivers/clk/mvebu/armada-37xx-xtal.c
@@ -0,0 +1,91 @@
+/*
+ * Marvell Armada 37xx SoC xtal clocks
+ *
+ * Copyright (C) 2016 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define NB_GPIO1_LATCH 0x8
+#define XTAL_MODE BIT(9)
+
+static int armada_3700_xtal_clock_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const char *xtal_name = "xtal";
+ struct device_node *parent;
+ struct regmap *regmap;
+ struct clk_hw *xtal_hw;
+ unsigned int rate;
+ u32 reg;
+ int ret;
+
+ xtal_hw = devm_kzalloc(&pdev->dev, sizeof(*xtal_hw), GFP_KERNEL);
+ if (!xtal_hw)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, xtal_hw);
+
+ parent = np->parent;
+ if (!parent) {
+ dev_err(&pdev->dev, "no parent\n");
+ return -ENODEV;
+ }
+
+ regmap = syscon_node_to_regmap(parent);
+ if (IS_ERR(regmap)) {
+ dev_err(&pdev->dev, "cannot get regmap\n");
+ return PTR_ERR(regmap);
+ }
+
+ ret = regmap_read(regmap, NB_GPIO1_LATCH, &reg);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot read from regmap\n");
+ return ret;
+ }
+
+ if (reg & XTAL_MODE)
+ rate = 40000000;
+ else
+ rate = 25000000;
+
+ of_property_read_string_index(np, "clock-output-names", 0, &xtal_name);
+ xtal_hw = clk_hw_register_fixed_rate(NULL, xtal_name, NULL, 0, rate);
+ if (IS_ERR(xtal_hw))
+ return PTR_ERR(xtal_hw);
+ ret = of_clk_add_hw_provider(np, of_clk_hw_simple_get, xtal_hw);
+
+ return ret;
+}
+
+static int armada_3700_xtal_clock_remove(struct platform_device *pdev)
+{
+ of_clk_del_provider(pdev->dev.of_node);
+
+ return 0;
+}
+
+static const struct of_device_id armada_3700_xtal_clock_of_match[] = {
+ { .compatible = "marvell,armada-3700-xtal-clock", },
+ { }
+};
+
+static struct platform_driver armada_3700_xtal_clock_driver = {
+ .probe = armada_3700_xtal_clock_probe,
+ .remove = armada_3700_xtal_clock_remove,
+ .driver = {
+ .name = "marvell-armada-3700-xtal-clock",
+ .of_match_table = armada_3700_xtal_clock_of_match,
+ },
+};
+
+builtin_platform_driver(armada_3700_xtal_clock_driver);
diff --git a/drivers/clk/mvebu/armada-38x.c b/drivers/clk/mvebu/armada-38x.c
new file mode 100644
index 000000000..9ff4ea639
--- /dev/null
+++ b/drivers/clk/mvebu/armada-38x.c
@@ -0,0 +1,168 @@
+/*
+ * Marvell Armada 380/385 SoC clocks
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * SAR[14:10] : Ratios between PCLK0, NBCLK, HCLK and DRAM clocks
+ *
+ * SAR[15] : TCLK frequency
+ * 0 = 250 MHz
+ * 1 = 200 MHz
+ */
+
+#define SAR_A380_TCLK_FREQ_OPT 15
+#define SAR_A380_TCLK_FREQ_OPT_MASK 0x1
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT 10
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+
+static const u32 armada_38x_tclk_frequencies[] __initconst = {
+ 250000000,
+ 200000000,
+};
+
+static u32 __init armada_38x_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar) >> SAR_A380_TCLK_FREQ_OPT) &
+ SAR_A380_TCLK_FREQ_OPT_MASK);
+ return armada_38x_tclk_frequencies[tclk_freq_select];
+}
+
+static const u32 armada_38x_cpu_frequencies[] __initconst = {
+ 666 * 1000 * 1000, 0, 800 * 1000 * 1000, 0,
+ 1066 * 1000 * 1000, 0, 1200 * 1000 * 1000, 0,
+ 1332 * 1000 * 1000, 0, 0, 0,
+ 1600 * 1000 * 1000, 0, 0, 0,
+ 1866 * 1000 * 1000, 0, 0, 2000 * 1000 * 1000,
+};
+
+static u32 __init armada_38x_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_38x_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ }
+
+ return armada_38x_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A380_CPU_TO_DDR, A380_CPU_TO_L2 };
+
+static const struct coreclk_ratio armada_38x_coreclk_ratios[] __initconst = {
+ { .id = A380_CPU_TO_L2, .name = "l2clk" },
+ { .id = A380_CPU_TO_DDR, .name = "ddrclk" },
+};
+
+static const int armada_38x_cpu_l2_ratios[32][2] __initconst = {
+ {1, 2}, {0, 1}, {1, 2}, {0, 1},
+ {1, 2}, {0, 1}, {1, 2}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {1, 2},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int armada_38x_cpu_ddr_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {7, 15},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init armada_38x_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A380_CPU_TO_L2:
+ *mult = armada_38x_cpu_l2_ratios[opt][0];
+ *div = armada_38x_cpu_l2_ratios[opt][1];
+ break;
+ case A380_CPU_TO_DDR:
+ *mult = armada_38x_cpu_ddr_ratios[opt][0];
+ *div = armada_38x_cpu_ddr_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc armada_38x_coreclks = {
+ .get_tclk_freq = armada_38x_get_tclk_freq,
+ .get_cpu_freq = armada_38x_get_cpu_freq,
+ .get_clk_ratio = armada_38x_get_clk_ratio,
+ .ratios = armada_38x_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_38x_coreclk_ratios),
+};
+
+static void __init armada_38x_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_38x_coreclks);
+}
+CLK_OF_DECLARE(armada_38x_core_clk, "marvell,armada-380-core-clock",
+ armada_38x_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_38x_gating_desc[] __initconst = {
+ { "audio", NULL, 0 },
+ { "ge2", NULL, 2 },
+ { "ge1", NULL, 3 },
+ { "ge0", NULL, 4 },
+ { "pex1", NULL, 5 },
+ { "pex2", NULL, 6 },
+ { "pex3", NULL, 7 },
+ { "pex0", NULL, 8 },
+ { "usb3h0", NULL, 9 },
+ { "usb3h1", NULL, 10 },
+ { "usb3d", NULL, 11 },
+ { "bm", NULL, 13 },
+ { "crypto0z", NULL, 14 },
+ { "sata0", NULL, 15 },
+ { "crypto1z", NULL, 16 },
+ { "sdio", NULL, 17 },
+ { "usb2", NULL, 18 },
+ { "crypto1", NULL, 21 },
+ { "xor0", NULL, 22 },
+ { "crypto0", NULL, 23 },
+ { "tdm", NULL, 25 },
+ { "xor1", NULL, 28 },
+ { "sata1", NULL, 30 },
+ { }
+};
+
+static void __init armada_38x_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_38x_gating_desc);
+}
+CLK_OF_DECLARE(armada_38x_clk_gating, "marvell,armada-380-gating-clock",
+ armada_38x_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-39x.c b/drivers/clk/mvebu/armada-39x.c
new file mode 100644
index 000000000..4fdfd3224
--- /dev/null
+++ b/drivers/clk/mvebu/armada-39x.c
@@ -0,0 +1,158 @@
+/*
+ * Marvell Armada 39x SoC clocks
+ *
+ * Copyright (C) 2015 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * SARL[14:10] : Ratios between CPU, NBCLK, HCLK and DCLK.
+ *
+ * SARL[15] : TCLK frequency
+ * 0 = 250 MHz
+ * 1 = 200 MHz
+ *
+ * SARH[0] : Reference clock frequency
+ * 0 = 25 Mhz
+ * 1 = 40 Mhz
+ */
+
+#define SARL 0
+#define SARL_A390_TCLK_FREQ_OPT 15
+#define SARL_A390_TCLK_FREQ_OPT_MASK 0x1
+#define SARL_A390_CPU_DDR_L2_FREQ_OPT 10
+#define SARL_A390_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+#define SARH 4
+#define SARH_A390_REFCLK_FREQ BIT(0)
+
+static const u32 armada_39x_tclk_frequencies[] __initconst = {
+ 250000000,
+ 200000000,
+};
+
+static u32 __init armada_39x_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar + SARL) >> SARL_A390_TCLK_FREQ_OPT) &
+ SARL_A390_TCLK_FREQ_OPT_MASK);
+ return armada_39x_tclk_frequencies[tclk_freq_select];
+}
+
+static const u32 armada_39x_cpu_frequencies[] __initconst = {
+ [0x0] = 666 * 1000 * 1000,
+ [0x2] = 800 * 1000 * 1000,
+ [0x3] = 800 * 1000 * 1000,
+ [0x4] = 1066 * 1000 * 1000,
+ [0x5] = 1066 * 1000 * 1000,
+ [0x6] = 1200 * 1000 * 1000,
+ [0x8] = 1332 * 1000 * 1000,
+ [0xB] = 1600 * 1000 * 1000,
+ [0xC] = 1600 * 1000 * 1000,
+ [0x12] = 1800 * 1000 * 1000,
+ [0x1E] = 1800 * 1000 * 1000,
+};
+
+static u32 __init armada_39x_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar + SARL) >> SARL_A390_CPU_DDR_L2_FREQ_OPT) &
+ SARL_A390_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_39x_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ }
+
+ return armada_39x_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A390_CPU_TO_NBCLK, A390_CPU_TO_HCLK, A390_CPU_TO_DCLK };
+
+static const struct coreclk_ratio armada_39x_coreclk_ratios[] __initconst = {
+ { .id = A390_CPU_TO_NBCLK, .name = "nbclk" },
+ { .id = A390_CPU_TO_HCLK, .name = "hclk" },
+ { .id = A390_CPU_TO_DCLK, .name = "dclk" },
+};
+
+static void __init armada_39x_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case A390_CPU_TO_NBCLK:
+ *mult = 1;
+ *div = 2;
+ break;
+ case A390_CPU_TO_HCLK:
+ *mult = 1;
+ *div = 4;
+ break;
+ case A390_CPU_TO_DCLK:
+ *mult = 1;
+ *div = 2;
+ break;
+ }
+}
+
+static u32 __init armada_39x_refclk_ratio(void __iomem *sar)
+{
+ if (readl(sar + SARH) & SARH_A390_REFCLK_FREQ)
+ return 40 * 1000 * 1000;
+ else
+ return 25 * 1000 * 1000;
+}
+
+static const struct coreclk_soc_desc armada_39x_coreclks = {
+ .get_tclk_freq = armada_39x_get_tclk_freq,
+ .get_cpu_freq = armada_39x_get_cpu_freq,
+ .get_clk_ratio = armada_39x_get_clk_ratio,
+ .get_refclk_freq = armada_39x_refclk_ratio,
+ .ratios = armada_39x_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_39x_coreclk_ratios),
+};
+
+static void __init armada_39x_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_39x_coreclks);
+}
+CLK_OF_DECLARE(armada_39x_core_clk, "marvell,armada-390-core-clock",
+ armada_39x_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_39x_gating_desc[] __initconst = {
+ { "pex1", NULL, 5 },
+ { "pex2", NULL, 6 },
+ { "pex3", NULL, 7 },
+ { "pex0", NULL, 8 },
+ { "usb3h0", NULL, 9 },
+ { "usb3h1", NULL, 10 },
+ { "sata0", NULL, 15 },
+ { "sdio", NULL, 17 },
+ { "xor0", NULL, 22 },
+ { "xor1", NULL, 28 },
+ { }
+};
+
+static void __init armada_39x_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_39x_gating_desc);
+}
+CLK_OF_DECLARE(armada_39x_clk_gating, "marvell,armada-390-gating-clock",
+ armada_39x_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-xp.c b/drivers/clk/mvebu/armada-xp.c
new file mode 100644
index 000000000..df529982a
--- /dev/null
+++ b/drivers/clk/mvebu/armada-xp.c
@@ -0,0 +1,236 @@
+/*
+ * Marvell Armada XP SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Armada XP Sample At Reset is a 64 bit bitfiled split in two
+ * register of 32 bits
+ */
+
+#define SARL 0 /* Low part [0:31] */
+#define SARL_AXP_PCLK_FREQ_OPT 21
+#define SARL_AXP_PCLK_FREQ_OPT_MASK 0x7
+#define SARL_AXP_FAB_FREQ_OPT 24
+#define SARL_AXP_FAB_FREQ_OPT_MASK 0xF
+#define SARH 4 /* High part [32:63] */
+#define SARH_AXP_PCLK_FREQ_OPT (52-32)
+#define SARH_AXP_PCLK_FREQ_OPT_MASK 0x1
+#define SARH_AXP_PCLK_FREQ_OPT_SHIFT 3
+#define SARH_AXP_FAB_FREQ_OPT (51-32)
+#define SARH_AXP_FAB_FREQ_OPT_MASK 0x1
+#define SARH_AXP_FAB_FREQ_OPT_SHIFT 4
+
+enum { AXP_CPU_TO_NBCLK, AXP_CPU_TO_HCLK, AXP_CPU_TO_DRAMCLK };
+
+static const struct coreclk_ratio axp_coreclk_ratios[] __initconst = {
+ { .id = AXP_CPU_TO_NBCLK, .name = "nbclk" },
+ { .id = AXP_CPU_TO_HCLK, .name = "hclk" },
+ { .id = AXP_CPU_TO_DRAMCLK, .name = "dramclk" },
+};
+
+/* Armada XP TCLK frequency is fixed to 250MHz */
+static u32 __init axp_get_tclk_freq(void __iomem *sar)
+{
+ return 250000000;
+}
+
+/* MV98DX3236 TCLK frequency is fixed to 200MHz */
+static u32 __init mv98dx3236_get_tclk_freq(void __iomem *sar)
+{
+ return 200000000;
+}
+
+static const u32 axp_cpu_freqs[] __initconst = {
+ 1000000000,
+ 1066000000,
+ 1200000000,
+ 1333000000,
+ 1500000000,
+ 1666000000,
+ 1800000000,
+ 2000000000,
+ 667000000,
+ 0,
+ 800000000,
+ 1600000000,
+};
+
+static u32 __init axp_get_cpu_freq(void __iomem *sar)
+{
+ u32 cpu_freq;
+ u8 cpu_freq_select = 0;
+
+ cpu_freq_select = ((readl(sar + SARL) >> SARL_AXP_PCLK_FREQ_OPT) &
+ SARL_AXP_PCLK_FREQ_OPT_MASK);
+ /*
+ * The upper bit is not contiguous to the other ones and
+ * located in the high part of the SAR registers
+ */
+ cpu_freq_select |= (((readl(sar + SARH) >> SARH_AXP_PCLK_FREQ_OPT) &
+ SARH_AXP_PCLK_FREQ_OPT_MASK) << SARH_AXP_PCLK_FREQ_OPT_SHIFT);
+ if (cpu_freq_select >= ARRAY_SIZE(axp_cpu_freqs)) {
+ pr_err("CPU freq select unsupported: %d\n", cpu_freq_select);
+ cpu_freq = 0;
+ } else
+ cpu_freq = axp_cpu_freqs[cpu_freq_select];
+
+ return cpu_freq;
+}
+
+/* MV98DX3236 CLK frequency is fixed to 800MHz */
+static u32 __init mv98dx3236_get_cpu_freq(void __iomem *sar)
+{
+ return 800000000;
+}
+
+static const int axp_nbclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 2}, {2, 2},
+ {1, 2}, {1, 2}, {1, 1}, {2, 3},
+ {0, 1}, {1, 2}, {2, 4}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {2, 2},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int axp_hclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 6}, {2, 3},
+ {1, 3}, {1, 4}, {1, 2}, {2, 6},
+ {0, 1}, {1, 6}, {2, 10}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 2},
+ {2, 6}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int axp_dramclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 3}, {2, 3},
+ {1, 3}, {1, 2}, {1, 2}, {2, 6},
+ {0, 1}, {1, 3}, {2, 5}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init axp_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar + SARL) >> SARL_AXP_FAB_FREQ_OPT) &
+ SARL_AXP_FAB_FREQ_OPT_MASK);
+ /*
+ * The upper bit is not contiguous to the other ones and
+ * located in the high part of the SAR registers
+ */
+ opt |= (((readl(sar + SARH) >> SARH_AXP_FAB_FREQ_OPT) &
+ SARH_AXP_FAB_FREQ_OPT_MASK) << SARH_AXP_FAB_FREQ_OPT_SHIFT);
+
+ switch (id) {
+ case AXP_CPU_TO_NBCLK:
+ *mult = axp_nbclk_ratios[opt][0];
+ *div = axp_nbclk_ratios[opt][1];
+ break;
+ case AXP_CPU_TO_HCLK:
+ *mult = axp_hclk_ratios[opt][0];
+ *div = axp_hclk_ratios[opt][1];
+ break;
+ case AXP_CPU_TO_DRAMCLK:
+ *mult = axp_dramclk_ratios[opt][0];
+ *div = axp_dramclk_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc axp_coreclks = {
+ .get_tclk_freq = axp_get_tclk_freq,
+ .get_cpu_freq = axp_get_cpu_freq,
+ .get_clk_ratio = axp_get_clk_ratio,
+ .ratios = axp_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(axp_coreclk_ratios),
+};
+
+static const struct coreclk_soc_desc mv98dx3236_coreclks = {
+ .get_tclk_freq = mv98dx3236_get_tclk_freq,
+ .get_cpu_freq = mv98dx3236_get_cpu_freq,
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc axp_gating_desc[] __initconst = {
+ { "audio", NULL, 0, 0 },
+ { "ge3", NULL, 1, 0 },
+ { "ge2", NULL, 2, 0 },
+ { "ge1", NULL, 3, 0 },
+ { "ge0", NULL, 4, 0 },
+ { "pex00", NULL, 5, 0 },
+ { "pex01", NULL, 6, 0 },
+ { "pex02", NULL, 7, 0 },
+ { "pex03", NULL, 8, 0 },
+ { "pex10", NULL, 9, 0 },
+ { "pex11", NULL, 10, 0 },
+ { "pex12", NULL, 11, 0 },
+ { "pex13", NULL, 12, 0 },
+ { "bp", NULL, 13, 0 },
+ { "sata0lnk", NULL, 14, 0 },
+ { "sata0", "sata0lnk", 15, 0 },
+ { "lcd", NULL, 16, 0 },
+ { "sdio", NULL, 17, 0 },
+ { "usb0", NULL, 18, 0 },
+ { "usb1", NULL, 19, 0 },
+ { "usb2", NULL, 20, 0 },
+ { "xor0", NULL, 22, 0 },
+ { "crypto", NULL, 23, 0 },
+ { "tdm", NULL, 25, 0 },
+ { "pex20", NULL, 26, 0 },
+ { "pex30", NULL, 27, 0 },
+ { "xor1", NULL, 28, 0 },
+ { "sata1lnk", NULL, 29, 0 },
+ { "sata1", "sata1lnk", 30, 0 },
+ { }
+};
+
+static const struct clk_gating_soc_desc mv98dx3236_gating_desc[] __initconst = {
+ { "ge1", NULL, 3, 0 },
+ { "ge0", NULL, 4, 0 },
+ { "pex00", NULL, 5, 0 },
+ { "sdio", NULL, 17, 0 },
+ { "xor0", NULL, 22, 0 },
+ { }
+};
+
+static void __init axp_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,armada-xp-gating-clock");
+
+ mvebu_coreclk_setup(np, &axp_coreclks);
+
+ if (cgnp) {
+ mvebu_clk_gating_setup(cgnp, axp_gating_desc);
+ of_node_put(cgnp);
+ }
+}
+CLK_OF_DECLARE(axp_clk, "marvell,armada-xp-core-clock", axp_clk_init);
diff --git a/drivers/clk/mvebu/clk-corediv.c b/drivers/clk/mvebu/clk-corediv.c
new file mode 100644
index 000000000..68f05c53d
--- /dev/null
+++ b/drivers/clk/mvebu/clk-corediv.c
@@ -0,0 +1,338 @@
+/*
+ * MVEBU Core divider clock
+ *
+ * Copyright (C) 2013 Marvell
+ *
+ * Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include "common.h"
+
+#define CORE_CLK_DIV_RATIO_MASK 0xff
+
+/*
+ * This structure describes the hardware details (bit offset and mask)
+ * to configure one particular core divider clock. Those hardware
+ * details may differ from one SoC to another. This structure is
+ * therefore typically instantiated statically to describe the
+ * hardware details.
+ */
+struct clk_corediv_desc {
+ unsigned int mask;
+ unsigned int offset;
+ unsigned int fieldbit;
+};
+
+/*
+ * This structure describes the hardware details to configure the core
+ * divider clocks on a given SoC. Amongst others, it points to the
+ * array of core divider clock descriptors for this SoC, as well as
+ * the corresponding operations to manipulate them.
+ */
+struct clk_corediv_soc_desc {
+ const struct clk_corediv_desc *descs;
+ unsigned int ndescs;
+ const struct clk_ops ops;
+ u32 ratio_reload;
+ u32 enable_bit_offset;
+ u32 ratio_offset;
+};
+
+/*
+ * This structure represents one core divider clock for the clock
+ * framework, and is dynamically allocated for each core divider clock
+ * existing in the current SoC.
+ */
+struct clk_corediv {
+ struct clk_hw hw;
+ void __iomem *reg;
+ const struct clk_corediv_desc *desc;
+ const struct clk_corediv_soc_desc *soc_desc;
+ spinlock_t lock;
+};
+
+static struct clk_onecell_data clk_data;
+
+/*
+ * Description of the core divider clocks available. For now, we
+ * support only NAND, and it is available at the same register
+ * locations regardless of the SoC.
+ */
+static const struct clk_corediv_desc mvebu_corediv_desc[] = {
+ { .mask = 0x3f, .offset = 8, .fieldbit = 1 }, /* NAND clock */
+};
+
+static const struct clk_corediv_desc mv98dx3236_corediv_desc[] = {
+ { .mask = 0x0f, .offset = 6, .fieldbit = 27 }, /* NAND clock */
+};
+
+#define to_corediv_clk(p) container_of(p, struct clk_corediv, hw)
+
+static int clk_corediv_is_enabled(struct clk_hw *hwclk)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ u32 enable_mask = BIT(desc->fieldbit) << soc_desc->enable_bit_offset;
+
+ return !!(readl(corediv->reg) & enable_mask);
+}
+
+static int clk_corediv_enable(struct clk_hw *hwclk)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ unsigned long flags = 0;
+ u32 reg;
+
+ spin_lock_irqsave(&corediv->lock, flags);
+
+ reg = readl(corediv->reg);
+ reg |= (BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
+ writel(reg, corediv->reg);
+
+ spin_unlock_irqrestore(&corediv->lock, flags);
+
+ return 0;
+}
+
+static void clk_corediv_disable(struct clk_hw *hwclk)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ unsigned long flags = 0;
+ u32 reg;
+
+ spin_lock_irqsave(&corediv->lock, flags);
+
+ reg = readl(corediv->reg);
+ reg &= ~(BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
+ writel(reg, corediv->reg);
+
+ spin_unlock_irqrestore(&corediv->lock, flags);
+}
+
+static unsigned long clk_corediv_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ u32 reg, div;
+
+ reg = readl(corediv->reg + soc_desc->ratio_offset);
+ div = (reg >> desc->offset) & desc->mask;
+ return parent_rate / div;
+}
+
+static long clk_corediv_round_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ /* Valid ratio are 1:4, 1:5, 1:6 and 1:8 */
+ u32 div;
+
+ div = *parent_rate / rate;
+ if (div < 4)
+ div = 4;
+ else if (div > 6)
+ div = 8;
+
+ return *parent_rate / div;
+}
+
+static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ unsigned long flags = 0;
+ u32 reg, div;
+
+ div = parent_rate / rate;
+
+ spin_lock_irqsave(&corediv->lock, flags);
+
+ /* Write new divider to the divider ratio register */
+ reg = readl(corediv->reg + soc_desc->ratio_offset);
+ reg &= ~(desc->mask << desc->offset);
+ reg |= (div & desc->mask) << desc->offset;
+ writel(reg, corediv->reg + soc_desc->ratio_offset);
+
+ /* Set reload-force for this clock */
+ reg = readl(corediv->reg) | BIT(desc->fieldbit);
+ writel(reg, corediv->reg);
+
+ /* Now trigger the clock update */
+ reg = readl(corediv->reg) | soc_desc->ratio_reload;
+ writel(reg, corediv->reg);
+
+ /*
+ * Wait for clocks to settle down, and then clear all the
+ * ratios request and the reload request.
+ */
+ udelay(1000);
+ reg &= ~(CORE_CLK_DIV_RATIO_MASK | soc_desc->ratio_reload);
+ writel(reg, corediv->reg);
+ udelay(1000);
+
+ spin_unlock_irqrestore(&corediv->lock, flags);
+
+ return 0;
+}
+
+static const struct clk_corediv_soc_desc armada370_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .enable = clk_corediv_enable,
+ .disable = clk_corediv_disable,
+ .is_enabled = clk_corediv_is_enabled,
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .enable_bit_offset = 24,
+ .ratio_offset = 0x8,
+};
+
+static const struct clk_corediv_soc_desc armada380_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .enable = clk_corediv_enable,
+ .disable = clk_corediv_disable,
+ .is_enabled = clk_corediv_is_enabled,
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .enable_bit_offset = 16,
+ .ratio_offset = 0x4,
+};
+
+static const struct clk_corediv_soc_desc armada375_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .ratio_offset = 0x4,
+};
+
+static const struct clk_corediv_soc_desc mv98dx3236_corediv_soc = {
+ .descs = mv98dx3236_corediv_desc,
+ .ndescs = ARRAY_SIZE(mv98dx3236_corediv_desc),
+ .ops = {
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(10),
+ .ratio_offset = 0x8,
+};
+
+static void __init
+mvebu_corediv_clk_init(struct device_node *node,
+ const struct clk_corediv_soc_desc *soc_desc)
+{
+ struct clk_init_data init;
+ struct clk_corediv *corediv;
+ struct clk **clks;
+ void __iomem *base;
+ const char *parent_name;
+ const char *clk_name;
+ int i;
+
+ base = of_iomap(node, 0);
+ if (WARN_ON(!base))
+ return;
+
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ clk_data.clk_num = soc_desc->ndescs;
+
+ /* clks holds the clock array */
+ clks = kcalloc(clk_data.clk_num, sizeof(struct clk *),
+ GFP_KERNEL);
+ if (WARN_ON(!clks))
+ goto err_unmap;
+ /* corediv holds the clock specific array */
+ corediv = kcalloc(clk_data.clk_num, sizeof(struct clk_corediv),
+ GFP_KERNEL);
+ if (WARN_ON(!corediv))
+ goto err_free_clks;
+
+ spin_lock_init(&corediv->lock);
+
+ for (i = 0; i < clk_data.clk_num; i++) {
+ of_property_read_string_index(node, "clock-output-names",
+ i, &clk_name);
+ init.num_parents = 1;
+ init.parent_names = &parent_name;
+ init.name = clk_name;
+ init.ops = &soc_desc->ops;
+ init.flags = 0;
+
+ corediv[i].soc_desc = soc_desc;
+ corediv[i].desc = soc_desc->descs + i;
+ corediv[i].reg = base;
+ corediv[i].hw.init = &init;
+
+ clks[i] = clk_register(NULL, &corediv[i].hw);
+ WARN_ON(IS_ERR(clks[i]));
+ }
+
+ clk_data.clks = clks;
+ of_clk_add_provider(node, of_clk_src_onecell_get, &clk_data);
+ return;
+
+err_free_clks:
+ kfree(clks);
+err_unmap:
+ iounmap(base);
+}
+
+static void __init armada370_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada370_corediv_soc);
+}
+CLK_OF_DECLARE(armada370_corediv_clk, "marvell,armada-370-corediv-clock",
+ armada370_corediv_clk_init);
+
+static void __init armada375_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada375_corediv_soc);
+}
+CLK_OF_DECLARE(armada375_corediv_clk, "marvell,armada-375-corediv-clock",
+ armada375_corediv_clk_init);
+
+static void __init armada380_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada380_corediv_soc);
+}
+CLK_OF_DECLARE(armada380_corediv_clk, "marvell,armada-380-corediv-clock",
+ armada380_corediv_clk_init);
+
+static void __init mv98dx3236_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &mv98dx3236_corediv_soc);
+}
+CLK_OF_DECLARE(mv98dx3236_corediv_clk, "marvell,mv98dx3236-corediv-clock",
+ mv98dx3236_corediv_clk_init);
diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
new file mode 100644
index 000000000..072aa3837
--- /dev/null
+++ b/drivers/clk/mvebu/clk-cpu.c
@@ -0,0 +1,255 @@
+/*
+ * Marvell MVEBU CPU clock handling.
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/delay.h>
+#include <linux/mvebu-pmsu.h>
+#include <asm/smp_plat.h>
+
+#define SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET 0x0
+#define SYS_CTRL_CLK_DIVIDER_CTRL_RESET_ALL 0xff
+#define SYS_CTRL_CLK_DIVIDER_CTRL_RESET_SHIFT 8
+#define SYS_CTRL_CLK_DIVIDER_CTRL2_OFFSET 0x8
+#define SYS_CTRL_CLK_DIVIDER_CTRL2_NBCLK_RATIO_SHIFT 16
+#define SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET 0xC
+#define SYS_CTRL_CLK_DIVIDER_MASK 0x3F
+
+#define PMU_DFS_RATIO_SHIFT 16
+#define PMU_DFS_RATIO_MASK 0x3F
+
+#define MAX_CPU 4
+struct cpu_clk {
+ struct clk_hw hw;
+ int cpu;
+ const char *clk_name;
+ const char *parent_name;
+ void __iomem *reg_base;
+ void __iomem *pmu_dfs;
+};
+
+static struct clk **clks;
+
+static struct clk_onecell_data clk_data;
+
+#define to_cpu_clk(p) container_of(p, struct cpu_clk, hw)
+
+static unsigned long clk_cpu_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
+ u32 reg, div;
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET);
+ div = (reg >> (cpuclk->cpu * 8)) & SYS_CTRL_CLK_DIVIDER_MASK;
+ return parent_rate / div;
+}
+
+static long clk_cpu_round_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ /* Valid ratio are 1:1, 1:2 and 1:3 */
+ u32 div;
+
+ div = *parent_rate / rate;
+ if (div == 0)
+ div = 1;
+ else if (div > 3)
+ div = 3;
+
+ return *parent_rate / div;
+}
+
+static int clk_cpu_off_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+
+{
+ struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
+ u32 reg, div;
+ u32 reload_mask;
+
+ div = parent_rate / rate;
+ reg = (readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET)
+ & (~(SYS_CTRL_CLK_DIVIDER_MASK << (cpuclk->cpu * 8))))
+ | (div << (cpuclk->cpu * 8));
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET);
+ /* Set clock divider reload smooth bit mask */
+ reload_mask = 1 << (20 + cpuclk->cpu);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET)
+ | reload_mask;
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+
+ /* Now trigger the clock update */
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET)
+ | 1 << 24;
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+
+ /* Wait for clocks to settle down then clear reload request */
+ udelay(1000);
+ reg &= ~(reload_mask | 1 << 24);
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+ udelay(1000);
+
+ return 0;
+}
+
+static int clk_cpu_on_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ u32 reg;
+ unsigned long fabric_div, target_div, cur_rate;
+ struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
+
+ /*
+ * PMU DFS registers are not mapped, Device Tree does not
+ * describes them. We cannot change the frequency dynamically.
+ */
+ if (!cpuclk->pmu_dfs)
+ return -ENODEV;
+
+ cur_rate = clk_hw_get_rate(hwclk);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL2_OFFSET);
+ fabric_div = (reg >> SYS_CTRL_CLK_DIVIDER_CTRL2_NBCLK_RATIO_SHIFT) &
+ SYS_CTRL_CLK_DIVIDER_MASK;
+
+ /* Frequency is going up */
+ if (rate == 2 * cur_rate)
+ target_div = fabric_div / 2;
+ /* Frequency is going down */
+ else
+ target_div = fabric_div;
+
+ if (target_div == 0)
+ target_div = 1;
+
+ reg = readl(cpuclk->pmu_dfs);
+ reg &= ~(PMU_DFS_RATIO_MASK << PMU_DFS_RATIO_SHIFT);
+ reg |= (target_div << PMU_DFS_RATIO_SHIFT);
+ writel(reg, cpuclk->pmu_dfs);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+ reg |= (SYS_CTRL_CLK_DIVIDER_CTRL_RESET_ALL <<
+ SYS_CTRL_CLK_DIVIDER_CTRL_RESET_SHIFT);
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+
+ return mvebu_pmsu_dfs_request(cpuclk->cpu);
+}
+
+static int clk_cpu_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ if (__clk_is_enabled(hwclk->clk))
+ return clk_cpu_on_set_rate(hwclk, rate, parent_rate);
+ else
+ return clk_cpu_off_set_rate(hwclk, rate, parent_rate);
+}
+
+static const struct clk_ops cpu_ops = {
+ .recalc_rate = clk_cpu_recalc_rate,
+ .round_rate = clk_cpu_round_rate,
+ .set_rate = clk_cpu_set_rate,
+};
+
+static void __init of_cpu_clk_setup(struct device_node *node)
+{
+ struct cpu_clk *cpuclk;
+ void __iomem *clock_complex_base = of_iomap(node, 0);
+ void __iomem *pmu_dfs_base = of_iomap(node, 1);
+ int ncpus = 0;
+ struct device_node *dn;
+
+ if (clock_complex_base == NULL) {
+ pr_err("%s: clock-complex base register not set\n",
+ __func__);
+ return;
+ }
+
+ if (pmu_dfs_base == NULL)
+ pr_warn("%s: pmu-dfs base register not set, dynamic frequency scaling not available\n",
+ __func__);
+
+ for_each_node_by_type(dn, "cpu")
+ ncpus++;
+
+ cpuclk = kcalloc(ncpus, sizeof(*cpuclk), GFP_KERNEL);
+ if (WARN_ON(!cpuclk))
+ goto cpuclk_out;
+
+ clks = kcalloc(ncpus, sizeof(*clks), GFP_KERNEL);
+ if (WARN_ON(!clks))
+ goto clks_out;
+
+ for_each_node_by_type(dn, "cpu") {
+ struct clk_init_data init;
+ struct clk *clk;
+ char *clk_name = kzalloc(5, GFP_KERNEL);
+ int cpu, err;
+
+ if (WARN_ON(!clk_name))
+ goto bail_out;
+
+ err = of_property_read_u32(dn, "reg", &cpu);
+ if (WARN_ON(err))
+ goto bail_out;
+
+ sprintf(clk_name, "cpu%d", cpu);
+
+ cpuclk[cpu].parent_name = of_clk_get_parent_name(node, 0);
+ cpuclk[cpu].clk_name = clk_name;
+ cpuclk[cpu].cpu = cpu;
+ cpuclk[cpu].reg_base = clock_complex_base;
+ if (pmu_dfs_base)
+ cpuclk[cpu].pmu_dfs = pmu_dfs_base + 4 * cpu;
+ cpuclk[cpu].hw.init = &init;
+
+ init.name = cpuclk[cpu].clk_name;
+ init.ops = &cpu_ops;
+ init.flags = 0;
+ init.parent_names = &cpuclk[cpu].parent_name;
+ init.num_parents = 1;
+
+ clk = clk_register(NULL, &cpuclk[cpu].hw);
+ if (WARN_ON(IS_ERR(clk)))
+ goto bail_out;
+ clks[cpu] = clk;
+ }
+ clk_data.clk_num = MAX_CPU;
+ clk_data.clks = clks;
+ of_clk_add_provider(node, of_clk_src_onecell_get, &clk_data);
+
+ return;
+bail_out:
+ kfree(clks);
+ while(ncpus--)
+ kfree(cpuclk[ncpus].clk_name);
+clks_out:
+ kfree(cpuclk);
+cpuclk_out:
+ iounmap(clock_complex_base);
+}
+
+CLK_OF_DECLARE(armada_xp_cpu_clock, "marvell,armada-xp-cpu-clock",
+ of_cpu_clk_setup);
+
+static void __init of_mv98dx3236_cpu_clk_setup(struct device_node *node)
+{
+ of_clk_add_provider(node, of_clk_src_simple_get, NULL);
+}
+
+CLK_OF_DECLARE(mv98dx3236_cpu_clock, "marvell,mv98dx3236-cpu-clock",
+ of_mv98dx3236_cpu_clk_setup);
diff --git a/drivers/clk/mvebu/common.c b/drivers/clk/mvebu/common.c
new file mode 100644
index 000000000..472c88b90
--- /dev/null
+++ b/drivers/clk/mvebu/common.c
@@ -0,0 +1,296 @@
+/*
+ * Marvell EBU SoC common clock handling
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
+
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+#define SSCG_CONF_MODE(reg) (((reg) >> 16) & 0x3)
+#define SSCG_SPREAD_DOWN 0x0
+#define SSCG_SPREAD_UP 0x1
+#define SSCG_SPREAD_CENTRAL 0x2
+#define SSCG_CONF_LOW(reg) (((reg) >> 8) & 0xFF)
+#define SSCG_CONF_HIGH(reg) ((reg) & 0xFF)
+
+static struct clk_onecell_data clk_data;
+
+/*
+ * This function can be used by the Kirkwood, the Armada 370, the
+ * Armada XP and the Armada 375 SoC. The name of the function was
+ * chosen following the dt convention: using the first known SoC
+ * compatible with it.
+ */
+u32 kirkwood_fix_sscg_deviation(u32 system_clk)
+{
+ struct device_node *sscg_np = NULL;
+ void __iomem *sscg_map;
+ u32 sscg_reg;
+ s32 low_bound, high_bound;
+ u64 freq_swing_half;
+
+ sscg_np = of_find_node_by_name(NULL, "sscg");
+ if (sscg_np == NULL) {
+ pr_err("cannot get SSCG register node\n");
+ return system_clk;
+ }
+
+ sscg_map = of_iomap(sscg_np, 0);
+ if (sscg_map == NULL) {
+ pr_err("cannot map SSCG register\n");
+ goto out;
+ }
+
+ sscg_reg = readl(sscg_map);
+ high_bound = SSCG_CONF_HIGH(sscg_reg);
+ low_bound = SSCG_CONF_LOW(sscg_reg);
+
+ if ((high_bound - low_bound) <= 0)
+ goto out;
+ /*
+ * From Marvell engineer we got the following formula (when
+ * this code was written, the datasheet was erroneous)
+ * Spread percentage = 1/96 * (H - L) / H
+ * H = SSCG_High_Boundary
+ * L = SSCG_Low_Boundary
+ *
+ * As the deviation is half of spread then it lead to the
+ * following formula in the code.
+ *
+ * To avoid an overflow and not lose any significant digit in
+ * the same time we have to use a 64 bit integer.
+ */
+
+ freq_swing_half = (((u64)high_bound - (u64)low_bound)
+ * (u64)system_clk);
+ do_div(freq_swing_half, (2 * 96 * high_bound));
+
+ switch (SSCG_CONF_MODE(sscg_reg)) {
+ case SSCG_SPREAD_DOWN:
+ system_clk -= freq_swing_half;
+ break;
+ case SSCG_SPREAD_UP:
+ system_clk += freq_swing_half;
+ break;
+ case SSCG_SPREAD_CENTRAL:
+ default:
+ break;
+ }
+
+ iounmap(sscg_map);
+
+out:
+ of_node_put(sscg_np);
+
+ return system_clk;
+}
+
+void __init mvebu_coreclk_setup(struct device_node *np,
+ const struct coreclk_soc_desc *desc)
+{
+ const char *tclk_name = "tclk";
+ const char *cpuclk_name = "cpuclk";
+ void __iomem *base;
+ unsigned long rate;
+ int n;
+
+ base = of_iomap(np, 0);
+ if (WARN_ON(!base))
+ return;
+
+ /* Allocate struct for TCLK, cpu clk, and core ratio clocks */
+ clk_data.clk_num = 2 + desc->num_ratios;
+
+ /* One more clock for the optional refclk */
+ if (desc->get_refclk_freq)
+ clk_data.clk_num += 1;
+
+ clk_data.clks = kcalloc(clk_data.clk_num, sizeof(*clk_data.clks),
+ GFP_KERNEL);
+ if (WARN_ON(!clk_data.clks)) {
+ iounmap(base);
+ return;
+ }
+
+ /* Register TCLK */
+ of_property_read_string_index(np, "clock-output-names", 0,
+ &tclk_name);
+ rate = desc->get_tclk_freq(base);
+ clk_data.clks[0] = clk_register_fixed_rate(NULL, tclk_name, NULL, 0,
+ rate);
+ WARN_ON(IS_ERR(clk_data.clks[0]));
+
+ /* Register CPU clock */
+ of_property_read_string_index(np, "clock-output-names", 1,
+ &cpuclk_name);
+ rate = desc->get_cpu_freq(base);
+
+ if (desc->is_sscg_enabled && desc->fix_sscg_deviation
+ && desc->is_sscg_enabled(base))
+ rate = desc->fix_sscg_deviation(rate);
+
+ clk_data.clks[1] = clk_register_fixed_rate(NULL, cpuclk_name, NULL, 0,
+ rate);
+ WARN_ON(IS_ERR(clk_data.clks[1]));
+
+ /* Register fixed-factor clocks derived from CPU clock */
+ for (n = 0; n < desc->num_ratios; n++) {
+ const char *rclk_name = desc->ratios[n].name;
+ int mult, div;
+
+ of_property_read_string_index(np, "clock-output-names",
+ 2+n, &rclk_name);
+ desc->get_clk_ratio(base, desc->ratios[n].id, &mult, &div);
+ clk_data.clks[2+n] = clk_register_fixed_factor(NULL, rclk_name,
+ cpuclk_name, 0, mult, div);
+ WARN_ON(IS_ERR(clk_data.clks[2+n]));
+ }
+
+ /* Register optional refclk */
+ if (desc->get_refclk_freq) {
+ const char *name = "refclk";
+ of_property_read_string_index(np, "clock-output-names",
+ 2 + desc->num_ratios, &name);
+ rate = desc->get_refclk_freq(base);
+ clk_data.clks[2 + desc->num_ratios] =
+ clk_register_fixed_rate(NULL, name, NULL, 0, rate);
+ WARN_ON(IS_ERR(clk_data.clks[2 + desc->num_ratios]));
+ }
+
+ /* SAR register isn't needed anymore */
+ iounmap(base);
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+}
+
+/*
+ * Clock Gating Control
+ */
+
+DEFINE_SPINLOCK(ctrl_gating_lock);
+
+struct clk_gating_ctrl {
+ spinlock_t *lock;
+ struct clk **gates;
+ int num_gates;
+ void __iomem *base;
+ u32 saved_reg;
+};
+
+static struct clk_gating_ctrl *ctrl;
+
+static struct clk *clk_gating_get_src(
+ struct of_phandle_args *clkspec, void *data)
+{
+ int n;
+
+ if (clkspec->args_count < 1)
+ return ERR_PTR(-EINVAL);
+
+ for (n = 0; n < ctrl->num_gates; n++) {
+ struct clk_gate *gate =
+ to_clk_gate(__clk_get_hw(ctrl->gates[n]));
+ if (clkspec->args[0] == gate->bit_idx)
+ return ctrl->gates[n];
+ }
+ return ERR_PTR(-ENODEV);
+}
+
+static int mvebu_clk_gating_suspend(void)
+{
+ ctrl->saved_reg = readl(ctrl->base);
+ return 0;
+}
+
+static void mvebu_clk_gating_resume(void)
+{
+ writel(ctrl->saved_reg, ctrl->base);
+}
+
+static struct syscore_ops clk_gate_syscore_ops = {
+ .suspend = mvebu_clk_gating_suspend,
+ .resume = mvebu_clk_gating_resume,
+};
+
+void __init mvebu_clk_gating_setup(struct device_node *np,
+ const struct clk_gating_soc_desc *desc)
+{
+ struct clk *clk;
+ void __iomem *base;
+ const char *default_parent = NULL;
+ int n;
+
+ if (ctrl) {
+ pr_err("mvebu-clk-gating: cannot instantiate more than one gatable clock device\n");
+ return;
+ }
+
+ base = of_iomap(np, 0);
+ if (WARN_ON(!base))
+ return;
+
+ clk = of_clk_get(np, 0);
+ if (!IS_ERR(clk)) {
+ default_parent = __clk_get_name(clk);
+ clk_put(clk);
+ }
+
+ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+ if (WARN_ON(!ctrl))
+ goto ctrl_out;
+
+ /* lock must already be initialized */
+ ctrl->lock = &ctrl_gating_lock;
+
+ ctrl->base = base;
+
+ /* Count, allocate, and register clock gates */
+ for (n = 0; desc[n].name;)
+ n++;
+
+ ctrl->num_gates = n;
+ ctrl->gates = kcalloc(ctrl->num_gates, sizeof(*ctrl->gates),
+ GFP_KERNEL);
+ if (WARN_ON(!ctrl->gates))
+ goto gates_out;
+
+ for (n = 0; n < ctrl->num_gates; n++) {
+ const char *parent =
+ (desc[n].parent) ? desc[n].parent : default_parent;
+ ctrl->gates[n] = clk_register_gate(NULL, desc[n].name, parent,
+ desc[n].flags, base, desc[n].bit_idx,
+ 0, ctrl->lock);
+ WARN_ON(IS_ERR(ctrl->gates[n]));
+ }
+
+ of_clk_add_provider(np, clk_gating_get_src, ctrl);
+
+ register_syscore_ops(&clk_gate_syscore_ops);
+
+ return;
+gates_out:
+ kfree(ctrl);
+ctrl_out:
+ iounmap(base);
+}
diff --git a/drivers/clk/mvebu/common.h b/drivers/clk/mvebu/common.h
new file mode 100644
index 000000000..f0de6c8a4
--- /dev/null
+++ b/drivers/clk/mvebu/common.h
@@ -0,0 +1,58 @@
+/*
+ * Marvell EBU SoC common clock handling
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __CLK_MVEBU_COMMON_H_
+#define __CLK_MVEBU_COMMON_H_
+
+#include <linux/kernel.h>
+
+extern spinlock_t ctrl_gating_lock;
+
+struct device_node;
+
+struct coreclk_ratio {
+ int id;
+ const char *name;
+};
+
+struct coreclk_soc_desc {
+ u32 (*get_tclk_freq)(void __iomem *sar);
+ u32 (*get_cpu_freq)(void __iomem *sar);
+ void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div);
+ u32 (*get_refclk_freq)(void __iomem *sar);
+ bool (*is_sscg_enabled)(void __iomem *sar);
+ u32 (*fix_sscg_deviation)(u32 system_clk);
+ const struct coreclk_ratio *ratios;
+ int num_ratios;
+};
+
+struct clk_gating_soc_desc {
+ const char *name;
+ const char *parent;
+ int bit_idx;
+ unsigned long flags;
+};
+
+void __init mvebu_coreclk_setup(struct device_node *np,
+ const struct coreclk_soc_desc *desc);
+
+void __init mvebu_clk_gating_setup(struct device_node *np,
+ const struct clk_gating_soc_desc *desc);
+
+/*
+ * This function is shared among the Kirkwood, Armada 370, Armada XP
+ * and Armada 375 SoC
+ */
+u32 kirkwood_fix_sscg_deviation(u32 system_clk);
+#endif
diff --git a/drivers/clk/mvebu/cp110-system-controller.c b/drivers/clk/mvebu/cp110-system-controller.c
new file mode 100644
index 000000000..0153c76d4
--- /dev/null
+++ b/drivers/clk/mvebu/cp110-system-controller.c
@@ -0,0 +1,452 @@
+/*
+ * Marvell Armada CP110 System Controller
+ *
+ * Copyright (C) 2016 Marvell
+ *
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+/*
+ * CP110 has 6 core clocks:
+ *
+ * - PLL0 (1 Ghz)
+ * - PPv2 core (1/3 PLL0)
+ * - x2 Core (1/2 PLL0)
+ * - Core (1/2 x2 Core)
+ * - SDIO (2/5 PLL0)
+ *
+ * - NAND clock, which is either:
+ * - Equal to SDIO clock
+ * - 2/5 PLL0
+ *
+ * CP110 has 32 gatable clocks, for the various peripherals in the IP.
+ */
+
+#define pr_fmt(fmt) "cp110-system-controller: " fmt
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define CP110_PM_CLOCK_GATING_REG 0x220
+#define CP110_NAND_FLASH_CLK_CTRL_REG 0x700
+#define NF_CLOCK_SEL_400_MASK BIT(0)
+
+enum {
+ CP110_CLK_TYPE_CORE,
+ CP110_CLK_TYPE_GATABLE,
+};
+
+#define CP110_MAX_CORE_CLOCKS 6
+#define CP110_MAX_GATABLE_CLOCKS 32
+
+#define CP110_CLK_NUM \
+ (CP110_MAX_CORE_CLOCKS + CP110_MAX_GATABLE_CLOCKS)
+
+#define CP110_CORE_PLL0 0
+#define CP110_CORE_PPV2 1
+#define CP110_CORE_X2CORE 2
+#define CP110_CORE_CORE 3
+#define CP110_CORE_NAND 4
+#define CP110_CORE_SDIO 5
+
+/* A number of gatable clocks need special handling */
+#define CP110_GATE_AUDIO 0
+#define CP110_GATE_COMM_UNIT 1
+#define CP110_GATE_NAND 2
+#define CP110_GATE_PPV2 3
+#define CP110_GATE_SDIO 4
+#define CP110_GATE_MG 5
+#define CP110_GATE_MG_CORE 6
+#define CP110_GATE_XOR1 7
+#define CP110_GATE_XOR0 8
+#define CP110_GATE_GOP_DP 9
+#define CP110_GATE_PCIE_X1_0 11
+#define CP110_GATE_PCIE_X1_1 12
+#define CP110_GATE_PCIE_X4 13
+#define CP110_GATE_PCIE_XOR 14
+#define CP110_GATE_SATA 15
+#define CP110_GATE_SATA_USB 16
+#define CP110_GATE_MAIN 17
+#define CP110_GATE_SDMMC_GOP 18
+#define CP110_GATE_SLOW_IO 21
+#define CP110_GATE_USB3H0 22
+#define CP110_GATE_USB3H1 23
+#define CP110_GATE_USB3DEV 24
+#define CP110_GATE_EIP150 25
+#define CP110_GATE_EIP197 26
+
+static const char * const gate_base_names[] = {
+ [CP110_GATE_AUDIO] = "audio",
+ [CP110_GATE_COMM_UNIT] = "communit",
+ [CP110_GATE_NAND] = "nand",
+ [CP110_GATE_PPV2] = "ppv2",
+ [CP110_GATE_SDIO] = "sdio",
+ [CP110_GATE_MG] = "mg-domain",
+ [CP110_GATE_MG_CORE] = "mg-core",
+ [CP110_GATE_XOR1] = "xor1",
+ [CP110_GATE_XOR0] = "xor0",
+ [CP110_GATE_GOP_DP] = "gop-dp",
+ [CP110_GATE_PCIE_X1_0] = "pcie_x10",
+ [CP110_GATE_PCIE_X1_1] = "pcie_x11",
+ [CP110_GATE_PCIE_X4] = "pcie_x4",
+ [CP110_GATE_PCIE_XOR] = "pcie-xor",
+ [CP110_GATE_SATA] = "sata",
+ [CP110_GATE_SATA_USB] = "sata-usb",
+ [CP110_GATE_MAIN] = "main",
+ [CP110_GATE_SDMMC_GOP] = "sd-mmc-gop",
+ [CP110_GATE_SLOW_IO] = "slow-io",
+ [CP110_GATE_USB3H0] = "usb3h0",
+ [CP110_GATE_USB3H1] = "usb3h1",
+ [CP110_GATE_USB3DEV] = "usb3dev",
+ [CP110_GATE_EIP150] = "eip150",
+ [CP110_GATE_EIP197] = "eip197"
+};
+
+struct cp110_gate_clk {
+ struct clk_hw hw;
+ struct regmap *regmap;
+ u8 bit_idx;
+};
+
+#define to_cp110_gate_clk(hw) container_of(hw, struct cp110_gate_clk, hw)
+
+static int cp110_gate_enable(struct clk_hw *hw)
+{
+ struct cp110_gate_clk *gate = to_cp110_gate_clk(hw);
+
+ regmap_update_bits(gate->regmap, CP110_PM_CLOCK_GATING_REG,
+ BIT(gate->bit_idx), BIT(gate->bit_idx));
+
+ return 0;
+}
+
+static void cp110_gate_disable(struct clk_hw *hw)
+{
+ struct cp110_gate_clk *gate = to_cp110_gate_clk(hw);
+
+ regmap_update_bits(gate->regmap, CP110_PM_CLOCK_GATING_REG,
+ BIT(gate->bit_idx), 0);
+}
+
+static int cp110_gate_is_enabled(struct clk_hw *hw)
+{
+ struct cp110_gate_clk *gate = to_cp110_gate_clk(hw);
+ u32 val;
+
+ regmap_read(gate->regmap, CP110_PM_CLOCK_GATING_REG, &val);
+
+ return val & BIT(gate->bit_idx);
+}
+
+static const struct clk_ops cp110_gate_ops = {
+ .enable = cp110_gate_enable,
+ .disable = cp110_gate_disable,
+ .is_enabled = cp110_gate_is_enabled,
+};
+
+static struct clk_hw *cp110_register_gate(const char *name,
+ const char *parent_name,
+ struct regmap *regmap, u8 bit_idx)
+{
+ struct cp110_gate_clk *gate;
+ struct clk_hw *hw;
+ struct clk_init_data init;
+ int ret;
+
+ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+ if (!gate)
+ return ERR_PTR(-ENOMEM);
+
+ memset(&init, 0, sizeof(init));
+
+ init.name = name;
+ init.ops = &cp110_gate_ops;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ gate->regmap = regmap;
+ gate->bit_idx = bit_idx;
+ gate->hw.init = &init;
+
+ hw = &gate->hw;
+ ret = clk_hw_register(NULL, hw);
+ if (ret) {
+ kfree(gate);
+ hw = ERR_PTR(ret);
+ }
+
+ return hw;
+}
+
+static void cp110_unregister_gate(struct clk_hw *hw)
+{
+ clk_hw_unregister(hw);
+ kfree(to_cp110_gate_clk(hw));
+}
+
+static struct clk_hw *cp110_of_clk_get(struct of_phandle_args *clkspec,
+ void *data)
+{
+ struct clk_hw_onecell_data *clk_data = data;
+ unsigned int type = clkspec->args[0];
+ unsigned int idx = clkspec->args[1];
+
+ if (type == CP110_CLK_TYPE_CORE) {
+ if (idx >= CP110_MAX_CORE_CLOCKS)
+ return ERR_PTR(-EINVAL);
+ return clk_data->hws[idx];
+ } else if (type == CP110_CLK_TYPE_GATABLE) {
+ if (idx >= CP110_MAX_GATABLE_CLOCKS)
+ return ERR_PTR(-EINVAL);
+ return clk_data->hws[CP110_MAX_CORE_CLOCKS + idx];
+ }
+
+ return ERR_PTR(-EINVAL);
+}
+
+static char *cp110_unique_name(struct device *dev, struct device_node *np,
+ const char *name)
+{
+ const __be32 *reg;
+ u64 addr;
+
+ /* Do not create a name if there is no clock */
+ if (!name)
+ return NULL;
+
+ reg = of_get_property(np, "reg", NULL);
+ addr = of_translate_address(np, reg);
+ return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
+ (unsigned long long)addr, name);
+}
+
+static int cp110_syscon_common_probe(struct platform_device *pdev,
+ struct device_node *syscon_node)
+{
+ struct regmap *regmap;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ const char *ppv2_name, *pll0_name, *core_name, *x2core_name, *nand_name,
+ *sdio_name;
+ struct clk_hw_onecell_data *cp110_clk_data;
+ struct clk_hw *hw, **cp110_clks;
+ u32 nand_clk_ctrl;
+ int i, ret;
+ char *gate_name[ARRAY_SIZE(gate_base_names)];
+
+ regmap = syscon_node_to_regmap(syscon_node);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ ret = regmap_read(regmap, CP110_NAND_FLASH_CLK_CTRL_REG,
+ &nand_clk_ctrl);
+ if (ret)
+ return ret;
+
+ cp110_clk_data = devm_kzalloc(dev, sizeof(*cp110_clk_data) +
+ sizeof(struct clk_hw *) * CP110_CLK_NUM,
+ GFP_KERNEL);
+ if (!cp110_clk_data)
+ return -ENOMEM;
+
+ cp110_clks = cp110_clk_data->hws;
+ cp110_clk_data->num = CP110_CLK_NUM;
+
+ /* Register the PLL0 which is the root of the hw tree */
+ pll0_name = cp110_unique_name(dev, syscon_node, "pll0");
+ hw = clk_hw_register_fixed_rate(NULL, pll0_name, NULL, 0,
+ 1000 * 1000 * 1000);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail_pll0;
+ }
+
+ cp110_clks[CP110_CORE_PLL0] = hw;
+
+ /* PPv2 is PLL0/3 */
+ ppv2_name = cp110_unique_name(dev, syscon_node, "ppv2-core");
+ hw = clk_hw_register_fixed_factor(NULL, ppv2_name, pll0_name, 0, 1, 3);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail_ppv2;
+ }
+
+ cp110_clks[CP110_CORE_PPV2] = hw;
+
+ /* X2CORE clock is PLL0/2 */
+ x2core_name = cp110_unique_name(dev, syscon_node, "x2core");
+ hw = clk_hw_register_fixed_factor(NULL, x2core_name, pll0_name,
+ 0, 1, 2);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail_eip;
+ }
+
+ cp110_clks[CP110_CORE_X2CORE] = hw;
+
+ /* Core clock is X2CORE/2 */
+ core_name = cp110_unique_name(dev, syscon_node, "core");
+ hw = clk_hw_register_fixed_factor(NULL, core_name, x2core_name,
+ 0, 1, 2);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail_core;
+ }
+
+ cp110_clks[CP110_CORE_CORE] = hw;
+ /* NAND can be either PLL0/2.5 or core clock */
+ nand_name = cp110_unique_name(dev, syscon_node, "nand-core");
+ if (nand_clk_ctrl & NF_CLOCK_SEL_400_MASK)
+ hw = clk_hw_register_fixed_factor(NULL, nand_name,
+ pll0_name, 0, 2, 5);
+ else
+ hw = clk_hw_register_fixed_factor(NULL, nand_name,
+ core_name, 0, 1, 1);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail_nand;
+ }
+
+ cp110_clks[CP110_CORE_NAND] = hw;
+
+ /* SDIO clock is PLL0/2.5 */
+ sdio_name = cp110_unique_name(dev, syscon_node, "sdio-core");
+ hw = clk_hw_register_fixed_factor(NULL, sdio_name,
+ pll0_name, 0, 2, 5);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail_sdio;
+ }
+
+ cp110_clks[CP110_CORE_SDIO] = hw;
+
+ /* create the unique name for all the gate clocks */
+ for (i = 0; i < ARRAY_SIZE(gate_base_names); i++)
+ gate_name[i] = cp110_unique_name(dev, syscon_node,
+ gate_base_names[i]);
+
+ for (i = 0; i < ARRAY_SIZE(gate_base_names); i++) {
+ const char *parent;
+
+ if (gate_name[i] == NULL)
+ continue;
+
+ switch (i) {
+ case CP110_GATE_NAND:
+ parent = nand_name;
+ break;
+ case CP110_GATE_MG:
+ case CP110_GATE_GOP_DP:
+ case CP110_GATE_PPV2:
+ parent = ppv2_name;
+ break;
+ case CP110_GATE_SDIO:
+ parent = sdio_name;
+ break;
+ case CP110_GATE_MAIN:
+ case CP110_GATE_PCIE_XOR:
+ case CP110_GATE_PCIE_X4:
+ case CP110_GATE_EIP150:
+ case CP110_GATE_EIP197:
+ parent = x2core_name;
+ break;
+ default:
+ parent = core_name;
+ break;
+ }
+ hw = cp110_register_gate(gate_name[i], parent, regmap, i);
+
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail_gate;
+ }
+
+ cp110_clks[CP110_MAX_CORE_CLOCKS + i] = hw;
+ }
+
+ ret = of_clk_add_hw_provider(np, cp110_of_clk_get, cp110_clk_data);
+ if (ret)
+ goto fail_clk_add;
+
+ platform_set_drvdata(pdev, cp110_clks);
+
+ return 0;
+
+fail_clk_add:
+fail_gate:
+ for (i = 0; i < CP110_MAX_GATABLE_CLOCKS; i++) {
+ hw = cp110_clks[CP110_MAX_CORE_CLOCKS + i];
+
+ if (hw)
+ cp110_unregister_gate(hw);
+ }
+
+ clk_hw_unregister_fixed_factor(cp110_clks[CP110_CORE_SDIO]);
+fail_sdio:
+ clk_hw_unregister_fixed_factor(cp110_clks[CP110_CORE_NAND]);
+fail_nand:
+ clk_hw_unregister_fixed_factor(cp110_clks[CP110_CORE_CORE]);
+fail_core:
+ clk_hw_unregister_fixed_factor(cp110_clks[CP110_CORE_X2CORE]);
+fail_eip:
+ clk_hw_unregister_fixed_factor(cp110_clks[CP110_CORE_PPV2]);
+fail_ppv2:
+ clk_hw_unregister_fixed_rate(cp110_clks[CP110_CORE_PLL0]);
+fail_pll0:
+ return ret;
+}
+
+static int cp110_syscon_legacy_clk_probe(struct platform_device *pdev)
+{
+ dev_warn(&pdev->dev, FW_WARN "Using legacy device tree binding\n");
+ dev_warn(&pdev->dev, FW_WARN "Update your device tree:\n");
+ dev_warn(&pdev->dev, FW_WARN
+ "This binding won't be supported in future kernels\n");
+
+ return cp110_syscon_common_probe(pdev, pdev->dev.of_node);
+}
+
+static int cp110_clk_probe(struct platform_device *pdev)
+{
+ return cp110_syscon_common_probe(pdev, pdev->dev.of_node->parent);
+}
+
+static const struct of_device_id cp110_syscon_legacy_of_match[] = {
+ { .compatible = "marvell,cp110-system-controller0", },
+ { }
+};
+
+static struct platform_driver cp110_syscon_legacy_driver = {
+ .probe = cp110_syscon_legacy_clk_probe,
+ .driver = {
+ .name = "marvell-cp110-system-controller0",
+ .of_match_table = cp110_syscon_legacy_of_match,
+ .suppress_bind_attrs = true,
+ },
+};
+builtin_platform_driver(cp110_syscon_legacy_driver);
+
+static const struct of_device_id cp110_clock_of_match[] = {
+ { .compatible = "marvell,cp110-clock", },
+ { }
+};
+
+static struct platform_driver cp110_clock_driver = {
+ .probe = cp110_clk_probe,
+ .driver = {
+ .name = "marvell-cp110-clock",
+ .of_match_table = cp110_clock_of_match,
+ .suppress_bind_attrs = true,
+ },
+};
+builtin_platform_driver(cp110_clock_driver);
diff --git a/drivers/clk/mvebu/dove-divider.c b/drivers/clk/mvebu/dove-divider.c
new file mode 100644
index 000000000..7e35c891e
--- /dev/null
+++ b/drivers/clk/mvebu/dove-divider.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Marvell Dove PMU Core PLL divider driver
+ *
+ * Cleaned up by substantially rewriting, and converted to DT by
+ * Russell King. Origin is not known.
+ */
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "dove-divider.h"
+
+struct dove_clk {
+ const char *name;
+ struct clk_hw hw;
+ void __iomem *base;
+ spinlock_t *lock;
+ u8 div_bit_start;
+ u8 div_bit_end;
+ u8 div_bit_load;
+ u8 div_bit_size;
+ u32 *divider_table;
+};
+
+enum {
+ DIV_CTRL0 = 0,
+ DIV_CTRL1 = 4,
+ DIV_CTRL1_N_RESET_MASK = BIT(10),
+};
+
+#define to_dove_clk(hw) container_of(hw, struct dove_clk, hw)
+
+static void dove_load_divider(void __iomem *base, u32 val, u32 mask, u32 load)
+{
+ u32 v;
+
+ v = readl_relaxed(base + DIV_CTRL1) | DIV_CTRL1_N_RESET_MASK;
+ writel_relaxed(v, base + DIV_CTRL1);
+
+ v = (readl_relaxed(base + DIV_CTRL0) & ~(mask | load)) | val;
+ writel_relaxed(v, base + DIV_CTRL0);
+ writel_relaxed(v | load, base + DIV_CTRL0);
+ ndelay(250);
+ writel_relaxed(v, base + DIV_CTRL0);
+}
+
+static unsigned int dove_get_divider(struct dove_clk *dc)
+{
+ unsigned int divider;
+ u32 val;
+
+ val = readl_relaxed(dc->base + DIV_CTRL0);
+ val >>= dc->div_bit_start;
+
+ divider = val & ~(~0 << dc->div_bit_size);
+
+ if (dc->divider_table)
+ divider = dc->divider_table[divider];
+
+ return divider;
+}
+
+static int dove_calc_divider(const struct dove_clk *dc, unsigned long rate,
+ unsigned long parent_rate, bool set)
+{
+ unsigned int divider, max;
+
+ divider = DIV_ROUND_CLOSEST(parent_rate, rate);
+
+ if (dc->divider_table) {
+ unsigned int i;
+
+ for (i = 0; dc->divider_table[i]; i++)
+ if (divider == dc->divider_table[i]) {
+ divider = i;
+ break;
+ }
+
+ if (!dc->divider_table[i])
+ return -EINVAL;
+ } else {
+ max = 1 << dc->div_bit_size;
+
+ if (set && (divider == 0 || divider >= max))
+ return -EINVAL;
+ if (divider >= max)
+ divider = max - 1;
+ else if (divider == 0)
+ divider = 1;
+ }
+
+ return divider;
+}
+
+static unsigned long dove_recalc_rate(struct clk_hw *hw, unsigned long parent)
+{
+ struct dove_clk *dc = to_dove_clk(hw);
+ unsigned int divider = dove_get_divider(dc);
+ unsigned long rate = DIV_ROUND_CLOSEST(parent, divider);
+
+ pr_debug("%s(): %s divider=%u parent=%lu rate=%lu\n",
+ __func__, dc->name, divider, parent, rate);
+
+ return rate;
+}
+
+static long dove_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent)
+{
+ struct dove_clk *dc = to_dove_clk(hw);
+ unsigned long parent_rate = *parent;
+ int divider;
+
+ divider = dove_calc_divider(dc, rate, parent_rate, false);
+ if (divider < 0)
+ return divider;
+
+ rate = DIV_ROUND_CLOSEST(parent_rate, divider);
+
+ pr_debug("%s(): %s divider=%u parent=%lu rate=%lu\n",
+ __func__, dc->name, divider, parent_rate, rate);
+
+ return rate;
+}
+
+static int dove_set_clock(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct dove_clk *dc = to_dove_clk(hw);
+ u32 mask, load, div;
+ int divider;
+
+ divider = dove_calc_divider(dc, rate, parent_rate, true);
+ if (divider < 0)
+ return divider;
+
+ pr_debug("%s(): %s divider=%u parent=%lu rate=%lu\n",
+ __func__, dc->name, divider, parent_rate, rate);
+
+ div = (u32)divider << dc->div_bit_start;
+ mask = ~(~0 << dc->div_bit_size) << dc->div_bit_start;
+ load = BIT(dc->div_bit_load);
+
+ spin_lock(dc->lock);
+ dove_load_divider(dc->base, div, mask, load);
+ spin_unlock(dc->lock);
+
+ return 0;
+}
+
+static const struct clk_ops dove_divider_ops = {
+ .set_rate = dove_set_clock,
+ .round_rate = dove_round_rate,
+ .recalc_rate = dove_recalc_rate,
+};
+
+static struct clk *clk_register_dove_divider(struct device *dev,
+ struct dove_clk *dc, const char **parent_names, size_t num_parents,
+ void __iomem *base)
+{
+ char name[32];
+ struct clk_init_data init = {
+ .name = name,
+ .ops = &dove_divider_ops,
+ .parent_names = parent_names,
+ .num_parents = num_parents,
+ };
+
+ strlcpy(name, dc->name, sizeof(name));
+
+ dc->hw.init = &init;
+ dc->base = base;
+ dc->div_bit_size = dc->div_bit_end - dc->div_bit_start + 1;
+
+ return clk_register(dev, &dc->hw);
+}
+
+static DEFINE_SPINLOCK(dove_divider_lock);
+
+static u32 axi_divider[] = {-1, 2, 1, 3, 4, 6, 5, 7, 8, 10, 9, 0};
+
+static struct dove_clk dove_hw_clocks[4] = {
+ {
+ .name = "axi",
+ .lock = &dove_divider_lock,
+ .div_bit_start = 1,
+ .div_bit_end = 6,
+ .div_bit_load = 7,
+ .divider_table = axi_divider,
+ }, {
+ .name = "gpu",
+ .lock = &dove_divider_lock,
+ .div_bit_start = 8,
+ .div_bit_end = 13,
+ .div_bit_load = 14,
+ }, {
+ .name = "vmeta",
+ .lock = &dove_divider_lock,
+ .div_bit_start = 15,
+ .div_bit_end = 20,
+ .div_bit_load = 21,
+ }, {
+ .name = "lcd",
+ .lock = &dove_divider_lock,
+ .div_bit_start = 22,
+ .div_bit_end = 27,
+ .div_bit_load = 28,
+ },
+};
+
+static const char *core_pll[] = {
+ "core-pll",
+};
+
+static int dove_divider_init(struct device *dev, void __iomem *base,
+ struct clk **clks)
+{
+ struct clk *clk;
+ int i;
+
+ /*
+ * Create the core PLL clock. We treat this as a fixed rate
+ * clock as we don't know any better, and documentation is sparse.
+ */
+ clk = clk_register_fixed_rate(dev, core_pll[0], NULL, 0, 2000000000UL);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ for (i = 0; i < ARRAY_SIZE(dove_hw_clocks); i++)
+ clks[i] = clk_register_dove_divider(dev, &dove_hw_clocks[i],
+ core_pll,
+ ARRAY_SIZE(core_pll), base);
+
+ return 0;
+}
+
+static struct clk *dove_divider_clocks[4];
+
+static struct clk_onecell_data dove_divider_data = {
+ .clks = dove_divider_clocks,
+ .clk_num = ARRAY_SIZE(dove_divider_clocks),
+};
+
+void __init dove_divider_clk_init(struct device_node *np)
+{
+ void __iomem *base;
+
+ base = of_iomap(np, 0);
+ if (WARN_ON(!base))
+ return;
+
+ if (WARN_ON(dove_divider_init(NULL, base, dove_divider_clocks))) {
+ iounmap(base);
+ return;
+ }
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, &dove_divider_data);
+}
diff --git a/drivers/clk/mvebu/dove-divider.h b/drivers/clk/mvebu/dove-divider.h
new file mode 100644
index 000000000..38ea37308
--- /dev/null
+++ b/drivers/clk/mvebu/dove-divider.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef DOVE_DIVIDER_H
+#define DOVE_DIVIDER_H
+
+void __init dove_divider_clk_init(struct device_node *np);
+
+#endif
diff --git a/drivers/clk/mvebu/dove.c b/drivers/clk/mvebu/dove.c
new file mode 100644
index 000000000..5f258c9bb
--- /dev/null
+++ b/drivers/clk/mvebu/dove.c
@@ -0,0 +1,203 @@
+/*
+ * Marvell Dove SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+#include "dove-divider.h"
+
+/*
+ * Core Clocks
+ *
+ * Dove PLL sample-at-reset configuration
+ *
+ * SAR0[8:5] : CPU frequency
+ * 5 = 1000 MHz
+ * 6 = 933 MHz
+ * 7 = 933 MHz
+ * 8 = 800 MHz
+ * 9 = 800 MHz
+ * 10 = 800 MHz
+ * 11 = 1067 MHz
+ * 12 = 667 MHz
+ * 13 = 533 MHz
+ * 14 = 400 MHz
+ * 15 = 333 MHz
+ * others reserved.
+ *
+ * SAR0[11:9] : CPU to L2 Clock divider ratio
+ * 0 = (1/1) * CPU
+ * 2 = (1/2) * CPU
+ * 4 = (1/3) * CPU
+ * 6 = (1/4) * CPU
+ * others reserved.
+ *
+ * SAR0[15:12] : CPU to DDR DRAM Clock divider ratio
+ * 0 = (1/1) * CPU
+ * 2 = (1/2) * CPU
+ * 3 = (2/5) * CPU
+ * 4 = (1/3) * CPU
+ * 6 = (1/4) * CPU
+ * 8 = (1/5) * CPU
+ * 10 = (1/6) * CPU
+ * 12 = (1/7) * CPU
+ * 14 = (1/8) * CPU
+ * 15 = (1/10) * CPU
+ * others reserved.
+ *
+ * SAR0[24:23] : TCLK frequency
+ * 0 = 166 MHz
+ * 1 = 125 MHz
+ * others reserved.
+ */
+
+#define SAR_DOVE_CPU_FREQ 5
+#define SAR_DOVE_CPU_FREQ_MASK 0xf
+#define SAR_DOVE_L2_RATIO 9
+#define SAR_DOVE_L2_RATIO_MASK 0x7
+#define SAR_DOVE_DDR_RATIO 12
+#define SAR_DOVE_DDR_RATIO_MASK 0xf
+#define SAR_DOVE_TCLK_FREQ 23
+#define SAR_DOVE_TCLK_FREQ_MASK 0x3
+
+enum { DOVE_CPU_TO_L2, DOVE_CPU_TO_DDR };
+
+static const struct coreclk_ratio dove_coreclk_ratios[] __initconst = {
+ { .id = DOVE_CPU_TO_L2, .name = "l2clk", },
+ { .id = DOVE_CPU_TO_DDR, .name = "ddrclk", }
+};
+
+static const u32 dove_tclk_freqs[] __initconst = {
+ 166666667,
+ 125000000,
+ 0, 0
+};
+
+static u32 __init dove_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_DOVE_TCLK_FREQ) &
+ SAR_DOVE_TCLK_FREQ_MASK;
+ return dove_tclk_freqs[opt];
+}
+
+static const u32 dove_cpu_freqs[] __initconst = {
+ 0, 0, 0, 0, 0,
+ 1000000000,
+ 933333333, 933333333,
+ 800000000, 800000000, 800000000,
+ 1066666667,
+ 666666667,
+ 533333333,
+ 400000000,
+ 333333333
+};
+
+static u32 __init dove_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_DOVE_CPU_FREQ) &
+ SAR_DOVE_CPU_FREQ_MASK;
+ return dove_cpu_freqs[opt];
+}
+
+static const int dove_cpu_l2_ratios[8][2] __initconst = {
+ { 1, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 },
+ { 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 }
+};
+
+static const int dove_cpu_ddr_ratios[16][2] __initconst = {
+ { 1, 1 }, { 0, 1 }, { 1, 2 }, { 2, 5 },
+ { 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 },
+ { 1, 5 }, { 0, 1 }, { 1, 6 }, { 0, 1 },
+ { 1, 7 }, { 0, 1 }, { 1, 8 }, { 1, 10 }
+};
+
+static void __init dove_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case DOVE_CPU_TO_L2:
+ {
+ u32 opt = (readl(sar) >> SAR_DOVE_L2_RATIO) &
+ SAR_DOVE_L2_RATIO_MASK;
+ *mult = dove_cpu_l2_ratios[opt][0];
+ *div = dove_cpu_l2_ratios[opt][1];
+ break;
+ }
+ case DOVE_CPU_TO_DDR:
+ {
+ u32 opt = (readl(sar) >> SAR_DOVE_DDR_RATIO) &
+ SAR_DOVE_DDR_RATIO_MASK;
+ *mult = dove_cpu_ddr_ratios[opt][0];
+ *div = dove_cpu_ddr_ratios[opt][1];
+ break;
+ }
+ }
+}
+
+static const struct coreclk_soc_desc dove_coreclks = {
+ .get_tclk_freq = dove_get_tclk_freq,
+ .get_cpu_freq = dove_get_cpu_freq,
+ .get_clk_ratio = dove_get_clk_ratio,
+ .ratios = dove_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(dove_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc dove_gating_desc[] __initconst = {
+ { "usb0", NULL, 0, 0 },
+ { "usb1", NULL, 1, 0 },
+ { "ge", "gephy", 2, 0 },
+ { "sata", NULL, 3, 0 },
+ { "pex0", NULL, 4, 0 },
+ { "pex1", NULL, 5, 0 },
+ { "sdio0", NULL, 8, 0 },
+ { "sdio1", NULL, 9, 0 },
+ { "nand", NULL, 10, 0 },
+ { "camera", NULL, 11, 0 },
+ { "i2s0", NULL, 12, 0 },
+ { "i2s1", NULL, 13, 0 },
+ { "crypto", NULL, 15, 0 },
+ { "ac97", NULL, 21, 0 },
+ { "pdma", NULL, 22, 0 },
+ { "xor0", NULL, 23, 0 },
+ { "xor1", NULL, 24, 0 },
+ { "gephy", NULL, 30, 0 },
+ { }
+};
+
+static void __init dove_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,dove-gating-clock");
+ struct device_node *ddnp =
+ of_find_compatible_node(NULL, NULL, "marvell,dove-divider-clock");
+
+ mvebu_coreclk_setup(np, &dove_coreclks);
+
+ if (ddnp) {
+ dove_divider_clk_init(ddnp);
+ of_node_put(ddnp);
+ }
+
+ if (cgnp) {
+ mvebu_clk_gating_setup(cgnp, dove_gating_desc);
+ of_node_put(cgnp);
+ }
+}
+CLK_OF_DECLARE(dove_clk, "marvell,dove-core-clock", dove_clk_init);
diff --git a/drivers/clk/mvebu/kirkwood.c b/drivers/clk/mvebu/kirkwood.c
new file mode 100644
index 000000000..38612cd90
--- /dev/null
+++ b/drivers/clk/mvebu/kirkwood.c
@@ -0,0 +1,344 @@
+/*
+ * Marvell Kirkwood SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Kirkwood PLL sample-at-reset configuration
+ * (6180 has different SAR layout than other Kirkwood SoCs)
+ *
+ * SAR0[4:3,22,1] : CPU frequency (6281,6292,6282)
+ * 4 = 600 MHz
+ * 6 = 800 MHz
+ * 7 = 1000 MHz
+ * 9 = 1200 MHz
+ * 12 = 1500 MHz
+ * 13 = 1600 MHz
+ * 14 = 1800 MHz
+ * 15 = 2000 MHz
+ * others reserved.
+ *
+ * SAR0[19,10:9] : CPU to L2 Clock divider ratio (6281,6292,6282)
+ * 1 = (1/2) * CPU
+ * 3 = (1/3) * CPU
+ * 5 = (1/4) * CPU
+ * others reserved.
+ *
+ * SAR0[8:5] : CPU to DDR DRAM Clock divider ratio (6281,6292,6282)
+ * 2 = (1/2) * CPU
+ * 4 = (1/3) * CPU
+ * 6 = (1/4) * CPU
+ * 7 = (2/9) * CPU
+ * 8 = (1/5) * CPU
+ * 9 = (1/6) * CPU
+ * others reserved.
+ *
+ * SAR0[4:2] : Kirkwood 6180 cpu/l2/ddr clock configuration (6180 only)
+ * 5 = [CPU = 600 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/3) * CPU]
+ * 6 = [CPU = 800 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/4) * CPU]
+ * 7 = [CPU = 1000 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/5) * CPU]
+ * others reserved.
+ *
+ * SAR0[21] : TCLK frequency
+ * 0 = 200 MHz
+ * 1 = 166 MHz
+ * others reserved.
+ */
+
+#define SAR_KIRKWOOD_CPU_FREQ(x) \
+ (((x & (1 << 1)) >> 1) | \
+ ((x & (1 << 22)) >> 21) | \
+ ((x & (3 << 3)) >> 1))
+#define SAR_KIRKWOOD_L2_RATIO(x) \
+ (((x & (3 << 9)) >> 9) | \
+ (((x & (1 << 19)) >> 17)))
+#define SAR_KIRKWOOD_DDR_RATIO 5
+#define SAR_KIRKWOOD_DDR_RATIO_MASK 0xf
+#define SAR_MV88F6180_CLK 2
+#define SAR_MV88F6180_CLK_MASK 0x7
+#define SAR_KIRKWOOD_TCLK_FREQ 21
+#define SAR_KIRKWOOD_TCLK_FREQ_MASK 0x1
+
+enum { KIRKWOOD_CPU_TO_L2, KIRKWOOD_CPU_TO_DDR };
+
+static const struct coreclk_ratio kirkwood_coreclk_ratios[] __initconst = {
+ { .id = KIRKWOOD_CPU_TO_L2, .name = "l2clk", },
+ { .id = KIRKWOOD_CPU_TO_DDR, .name = "ddrclk", }
+};
+
+static u32 __init kirkwood_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_KIRKWOOD_TCLK_FREQ) &
+ SAR_KIRKWOOD_TCLK_FREQ_MASK;
+ return (opt) ? 166666667 : 200000000;
+}
+
+static const u32 kirkwood_cpu_freqs[] __initconst = {
+ 0, 0, 0, 0,
+ 600000000,
+ 0,
+ 800000000,
+ 1000000000,
+ 0,
+ 1200000000,
+ 0, 0,
+ 1500000000,
+ 1600000000,
+ 1800000000,
+ 2000000000
+};
+
+static u32 __init kirkwood_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = SAR_KIRKWOOD_CPU_FREQ(readl(sar));
+ return kirkwood_cpu_freqs[opt];
+}
+
+static const int kirkwood_cpu_l2_ratios[8][2] __initconst = {
+ { 0, 1 }, { 1, 2 }, { 0, 1 }, { 1, 3 },
+ { 0, 1 }, { 1, 4 }, { 0, 1 }, { 0, 1 }
+};
+
+static const int kirkwood_cpu_ddr_ratios[16][2] __initconst = {
+ { 0, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 },
+ { 1, 3 }, { 0, 1 }, { 1, 4 }, { 2, 9 },
+ { 1, 5 }, { 1, 6 }, { 0, 1 }, { 0, 1 },
+ { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }
+};
+
+static void __init kirkwood_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case KIRKWOOD_CPU_TO_L2:
+ {
+ u32 opt = SAR_KIRKWOOD_L2_RATIO(readl(sar));
+ *mult = kirkwood_cpu_l2_ratios[opt][0];
+ *div = kirkwood_cpu_l2_ratios[opt][1];
+ break;
+ }
+ case KIRKWOOD_CPU_TO_DDR:
+ {
+ u32 opt = (readl(sar) >> SAR_KIRKWOOD_DDR_RATIO) &
+ SAR_KIRKWOOD_DDR_RATIO_MASK;
+ *mult = kirkwood_cpu_ddr_ratios[opt][0];
+ *div = kirkwood_cpu_ddr_ratios[opt][1];
+ break;
+ }
+ }
+}
+
+static const u32 mv88f6180_cpu_freqs[] __initconst = {
+ 0, 0, 0, 0, 0,
+ 600000000,
+ 800000000,
+ 1000000000
+};
+
+static u32 __init mv88f6180_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) & SAR_MV88F6180_CLK_MASK;
+ return mv88f6180_cpu_freqs[opt];
+}
+
+static const int mv88f6180_cpu_ddr_ratios[8][2] __initconst = {
+ { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
+ { 0, 1 }, { 1, 3 }, { 1, 4 }, { 1, 5 }
+};
+
+static void __init mv88f6180_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case KIRKWOOD_CPU_TO_L2:
+ {
+ /* mv88f6180 has a fixed 1:2 CPU-to-L2 ratio */
+ *mult = 1;
+ *div = 2;
+ break;
+ }
+ case KIRKWOOD_CPU_TO_DDR:
+ {
+ u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) &
+ SAR_MV88F6180_CLK_MASK;
+ *mult = mv88f6180_cpu_ddr_ratios[opt][0];
+ *div = mv88f6180_cpu_ddr_ratios[opt][1];
+ break;
+ }
+ }
+}
+
+static const struct coreclk_soc_desc kirkwood_coreclks = {
+ .get_tclk_freq = kirkwood_get_tclk_freq,
+ .get_cpu_freq = kirkwood_get_cpu_freq,
+ .get_clk_ratio = kirkwood_get_clk_ratio,
+ .ratios = kirkwood_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
+};
+
+static const struct coreclk_soc_desc mv88f6180_coreclks = {
+ .get_tclk_freq = kirkwood_get_tclk_freq,
+ .get_cpu_freq = mv88f6180_get_cpu_freq,
+ .get_clk_ratio = mv88f6180_get_clk_ratio,
+ .ratios = kirkwood_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc kirkwood_gating_desc[] __initconst = {
+ { "ge0", NULL, 0, 0 },
+ { "pex0", NULL, 2, 0 },
+ { "usb0", NULL, 3, 0 },
+ { "sdio", NULL, 4, 0 },
+ { "tsu", NULL, 5, 0 },
+ { "runit", NULL, 7, 0 },
+ { "xor0", NULL, 8, 0 },
+ { "audio", NULL, 9, 0 },
+ { "sata0", NULL, 14, 0 },
+ { "sata1", NULL, 15, 0 },
+ { "xor1", NULL, 16, 0 },
+ { "crypto", NULL, 17, 0 },
+ { "pex1", NULL, 18, 0 },
+ { "ge1", NULL, 19, 0 },
+ { "tdm", NULL, 20, 0 },
+ { }
+};
+
+
+/*
+ * Clock Muxing Control
+ */
+
+struct clk_muxing_soc_desc {
+ const char *name;
+ const char **parents;
+ int num_parents;
+ int shift;
+ int width;
+ unsigned long flags;
+};
+
+struct clk_muxing_ctrl {
+ spinlock_t *lock;
+ struct clk **muxes;
+ int num_muxes;
+};
+
+static const char *powersave_parents[] = {
+ "cpuclk",
+ "ddrclk",
+};
+
+static const struct clk_muxing_soc_desc kirkwood_mux_desc[] __initconst = {
+ { "powersave", powersave_parents, ARRAY_SIZE(powersave_parents),
+ 11, 1, 0 },
+ { }
+};
+
+static struct clk *clk_muxing_get_src(
+ struct of_phandle_args *clkspec, void *data)
+{
+ struct clk_muxing_ctrl *ctrl = (struct clk_muxing_ctrl *)data;
+ int n;
+
+ if (clkspec->args_count < 1)
+ return ERR_PTR(-EINVAL);
+
+ for (n = 0; n < ctrl->num_muxes; n++) {
+ struct clk_mux *mux =
+ to_clk_mux(__clk_get_hw(ctrl->muxes[n]));
+ if (clkspec->args[0] == mux->shift)
+ return ctrl->muxes[n];
+ }
+ return ERR_PTR(-ENODEV);
+}
+
+static void __init kirkwood_clk_muxing_setup(struct device_node *np,
+ const struct clk_muxing_soc_desc *desc)
+{
+ struct clk_muxing_ctrl *ctrl;
+ void __iomem *base;
+ int n;
+
+ base = of_iomap(np, 0);
+ if (WARN_ON(!base))
+ return;
+
+ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+ if (WARN_ON(!ctrl))
+ goto ctrl_out;
+
+ /* lock must already be initialized */
+ ctrl->lock = &ctrl_gating_lock;
+
+ /* Count, allocate, and register clock muxes */
+ for (n = 0; desc[n].name;)
+ n++;
+
+ ctrl->num_muxes = n;
+ ctrl->muxes = kcalloc(ctrl->num_muxes, sizeof(struct clk *),
+ GFP_KERNEL);
+ if (WARN_ON(!ctrl->muxes))
+ goto muxes_out;
+
+ for (n = 0; n < ctrl->num_muxes; n++) {
+ ctrl->muxes[n] = clk_register_mux(NULL, desc[n].name,
+ desc[n].parents, desc[n].num_parents,
+ desc[n].flags, base, desc[n].shift,
+ desc[n].width, desc[n].flags, ctrl->lock);
+ WARN_ON(IS_ERR(ctrl->muxes[n]));
+ }
+
+ of_clk_add_provider(np, clk_muxing_get_src, ctrl);
+
+ return;
+muxes_out:
+ kfree(ctrl);
+ctrl_out:
+ iounmap(base);
+}
+
+static void __init kirkwood_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,kirkwood-gating-clock");
+
+
+ if (of_device_is_compatible(np, "marvell,mv88f6180-core-clock"))
+ mvebu_coreclk_setup(np, &mv88f6180_coreclks);
+ else
+ mvebu_coreclk_setup(np, &kirkwood_coreclks);
+
+ if (cgnp) {
+ mvebu_clk_gating_setup(cgnp, kirkwood_gating_desc);
+ kirkwood_clk_muxing_setup(cgnp, kirkwood_mux_desc);
+
+ of_node_put(cgnp);
+ }
+}
+CLK_OF_DECLARE(kirkwood_clk, "marvell,kirkwood-core-clock",
+ kirkwood_clk_init);
+CLK_OF_DECLARE(mv88f6180_clk, "marvell,mv88f6180-core-clock",
+ kirkwood_clk_init);
diff --git a/drivers/clk/mvebu/mv98dx3236.c b/drivers/clk/mvebu/mv98dx3236.c
new file mode 100644
index 000000000..c8a0d03d2
--- /dev/null
+++ b/drivers/clk/mvebu/mv98dx3236.c
@@ -0,0 +1,182 @@
+/*
+ * Marvell MV98DX3236 SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+
+/*
+ * For 98DX4251 Sample At Reset the CPU, DDR and Main PLL clocks are all
+ * defined at the same time
+ *
+ * SAR1[20:18] : CPU frequency DDR frequency MPLL frequency
+ * 0 = 400 MHz 400 MHz 800 MHz
+ * 2 = 667 MHz 667 MHz 2000 MHz
+ * 3 = 800 MHz 800 MHz 1600 MHz
+ * others reserved.
+ *
+ * For 98DX3236 Sample At Reset the CPU, DDR and Main PLL clocks are all
+ * defined at the same time
+ *
+ * SAR1[20:18] : CPU frequency DDR frequency MPLL frequency
+ * 1 = 667 MHz 667 MHz 2000 MHz
+ * 2 = 400 MHz 400 MHz 400 MHz
+ * 3 = 800 MHz 800 MHz 800 MHz
+ * 5 = 800 MHz 400 MHz 800 MHz
+ * others reserved.
+ */
+
+#define SAR1_MV98DX3236_CPU_DDR_MPLL_FREQ_OPT 18
+#define SAR1_MV98DX3236_CPU_DDR_MPLL_FREQ_OPT_MASK 0x7
+
+static u32 __init mv98dx3236_get_tclk_freq(void __iomem *sar)
+{
+ /* Tclk = 200MHz, no SaR dependency */
+ return 200000000;
+}
+
+static const u32 mv98dx3236_cpu_frequencies[] __initconst = {
+ 0,
+ 667000000,
+ 400000000,
+ 800000000,
+ 0,
+ 800000000,
+ 0, 0,
+};
+
+static const u32 mv98dx4251_cpu_frequencies[] __initconst = {
+ 400000000,
+ 0,
+ 667000000,
+ 800000000,
+ 0, 0, 0, 0,
+};
+
+static u32 __init mv98dx3236_get_cpu_freq(void __iomem *sar)
+{
+ u32 cpu_freq = 0;
+ u8 cpu_freq_select = 0;
+
+ cpu_freq_select = ((readl(sar) >> SAR1_MV98DX3236_CPU_DDR_MPLL_FREQ_OPT) &
+ SAR1_MV98DX3236_CPU_DDR_MPLL_FREQ_OPT_MASK);
+
+ if (of_machine_is_compatible("marvell,armadaxp-98dx4251"))
+ cpu_freq = mv98dx4251_cpu_frequencies[cpu_freq_select];
+ else if (of_machine_is_compatible("marvell,armadaxp-98dx3236"))
+ cpu_freq = mv98dx3236_cpu_frequencies[cpu_freq_select];
+
+ if (!cpu_freq)
+ pr_err("CPU freq select unsupported %d\n", cpu_freq_select);
+
+ return cpu_freq;
+}
+
+enum {
+ MV98DX3236_CPU_TO_DDR,
+ MV98DX3236_CPU_TO_MPLL
+};
+
+static const struct coreclk_ratio mv98dx3236_core_ratios[] __initconst = {
+ { .id = MV98DX3236_CPU_TO_DDR, .name = "ddrclk" },
+ { .id = MV98DX3236_CPU_TO_MPLL, .name = "mpll" },
+};
+
+static const int __initconst mv98dx3236_cpu_mpll_ratios[8][2] = {
+ {0, 1}, {3, 1}, {1, 1}, {1, 1},
+ {0, 1}, {1, 1}, {0, 1}, {0, 1},
+};
+
+static const int __initconst mv98dx3236_cpu_ddr_ratios[8][2] = {
+ {0, 1}, {1, 1}, {1, 1}, {1, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+};
+
+static const int __initconst mv98dx4251_cpu_mpll_ratios[8][2] = {
+ {2, 1}, {0, 1}, {3, 1}, {2, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int __initconst mv98dx4251_cpu_ddr_ratios[8][2] = {
+ {1, 1}, {0, 1}, {1, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init mv98dx3236_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR1_MV98DX3236_CPU_DDR_MPLL_FREQ_OPT) &
+ SAR1_MV98DX3236_CPU_DDR_MPLL_FREQ_OPT_MASK);
+
+ switch (id) {
+ case MV98DX3236_CPU_TO_DDR:
+ if (of_machine_is_compatible("marvell,armadaxp-98dx4251")) {
+ *mult = mv98dx4251_cpu_ddr_ratios[opt][0];
+ *div = mv98dx4251_cpu_ddr_ratios[opt][1];
+ } else if (of_machine_is_compatible("marvell,armadaxp-98dx3236")) {
+ *mult = mv98dx3236_cpu_ddr_ratios[opt][0];
+ *div = mv98dx3236_cpu_ddr_ratios[opt][1];
+ }
+ break;
+ case MV98DX3236_CPU_TO_MPLL:
+ if (of_machine_is_compatible("marvell,armadaxp-98dx4251")) {
+ *mult = mv98dx4251_cpu_mpll_ratios[opt][0];
+ *div = mv98dx4251_cpu_mpll_ratios[opt][1];
+ } else if (of_machine_is_compatible("marvell,armadaxp-98dx3236")) {
+ *mult = mv98dx3236_cpu_mpll_ratios[opt][0];
+ *div = mv98dx3236_cpu_mpll_ratios[opt][1];
+ }
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc mv98dx3236_core_clocks = {
+ .get_tclk_freq = mv98dx3236_get_tclk_freq,
+ .get_cpu_freq = mv98dx3236_get_cpu_freq,
+ .get_clk_ratio = mv98dx3236_get_clk_ratio,
+ .ratios = mv98dx3236_core_ratios,
+ .num_ratios = ARRAY_SIZE(mv98dx3236_core_ratios),
+};
+
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc mv98dx3236_gating_desc[] __initconst = {
+ { "ge1", NULL, 3, 0 },
+ { "ge0", NULL, 4, 0 },
+ { "pex00", NULL, 5, 0 },
+ { "sdio", NULL, 17, 0 },
+ { "usb0", NULL, 18, 0 },
+ { "xor0", NULL, 22, 0 },
+ { }
+};
+
+static void __init mv98dx3236_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,mv98dx3236-gating-clock");
+
+ mvebu_coreclk_setup(np, &mv98dx3236_core_clocks);
+
+ if (cgnp) {
+ mvebu_clk_gating_setup(cgnp, mv98dx3236_gating_desc);
+ of_node_put(cgnp);
+ }
+}
+CLK_OF_DECLARE(mv98dx3236_clk, "marvell,mv98dx3236-core-clock", mv98dx3236_clk_init);
diff --git a/drivers/clk/mvebu/orion.c b/drivers/clk/mvebu/orion.c
new file mode 100644
index 000000000..a6e5bee23
--- /dev/null
+++ b/drivers/clk/mvebu/orion.c
@@ -0,0 +1,280 @@
+/*
+ * Marvell Orion SoC clocks
+ *
+ * Copyright (C) 2014 Thomas Petazzoni
+ *
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+static const struct coreclk_ratio orion_coreclk_ratios[] __initconst = {
+ { .id = 0, .name = "ddrclk", }
+};
+
+/*
+ * Orion 5181
+ */
+
+#define SAR_MV88F5181_TCLK_FREQ 8
+#define SAR_MV88F5181_TCLK_FREQ_MASK 0x3
+
+static u32 __init mv88f5181_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5181_TCLK_FREQ) &
+ SAR_MV88F5181_TCLK_FREQ_MASK;
+ if (opt == 0)
+ return 133333333;
+ else if (opt == 1)
+ return 150000000;
+ else if (opt == 2)
+ return 166666667;
+ else
+ return 0;
+}
+
+#define SAR_MV88F5181_CPU_FREQ 4
+#define SAR_MV88F5181_CPU_FREQ_MASK 0xf
+
+static u32 __init mv88f5181_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
+ SAR_MV88F5181_CPU_FREQ_MASK;
+ if (opt == 0)
+ return 333333333;
+ else if (opt == 1 || opt == 2)
+ return 400000000;
+ else if (opt == 3)
+ return 500000000;
+ else
+ return 0;
+}
+
+static void __init mv88f5181_get_clk_ratio(void __iomem *sar, int id,
+ int *mult, int *div)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
+ SAR_MV88F5181_CPU_FREQ_MASK;
+ if (opt == 0 || opt == 1) {
+ *mult = 1;
+ *div = 2;
+ } else if (opt == 2 || opt == 3) {
+ *mult = 1;
+ *div = 3;
+ } else {
+ *mult = 0;
+ *div = 1;
+ }
+}
+
+static const struct coreclk_soc_desc mv88f5181_coreclks = {
+ .get_tclk_freq = mv88f5181_get_tclk_freq,
+ .get_cpu_freq = mv88f5181_get_cpu_freq,
+ .get_clk_ratio = mv88f5181_get_clk_ratio,
+ .ratios = orion_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
+};
+
+static void __init mv88f5181_clk_init(struct device_node *np)
+{
+ return mvebu_coreclk_setup(np, &mv88f5181_coreclks);
+}
+
+CLK_OF_DECLARE(mv88f5181_clk, "marvell,mv88f5181-core-clock", mv88f5181_clk_init);
+
+/*
+ * Orion 5182
+ */
+
+#define SAR_MV88F5182_TCLK_FREQ 8
+#define SAR_MV88F5182_TCLK_FREQ_MASK 0x3
+
+static u32 __init mv88f5182_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5182_TCLK_FREQ) &
+ SAR_MV88F5182_TCLK_FREQ_MASK;
+ if (opt == 1)
+ return 150000000;
+ else if (opt == 2)
+ return 166666667;
+ else
+ return 0;
+}
+
+#define SAR_MV88F5182_CPU_FREQ 4
+#define SAR_MV88F5182_CPU_FREQ_MASK 0xf
+
+static u32 __init mv88f5182_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5182_CPU_FREQ) &
+ SAR_MV88F5182_CPU_FREQ_MASK;
+ if (opt == 0)
+ return 333333333;
+ else if (opt == 1 || opt == 2)
+ return 400000000;
+ else if (opt == 3)
+ return 500000000;
+ else
+ return 0;
+}
+
+static void __init mv88f5182_get_clk_ratio(void __iomem *sar, int id,
+ int *mult, int *div)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5182_CPU_FREQ) &
+ SAR_MV88F5182_CPU_FREQ_MASK;
+ if (opt == 0 || opt == 1) {
+ *mult = 1;
+ *div = 2;
+ } else if (opt == 2 || opt == 3) {
+ *mult = 1;
+ *div = 3;
+ } else {
+ *mult = 0;
+ *div = 1;
+ }
+}
+
+static const struct coreclk_soc_desc mv88f5182_coreclks = {
+ .get_tclk_freq = mv88f5182_get_tclk_freq,
+ .get_cpu_freq = mv88f5182_get_cpu_freq,
+ .get_clk_ratio = mv88f5182_get_clk_ratio,
+ .ratios = orion_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
+};
+
+static void __init mv88f5182_clk_init(struct device_node *np)
+{
+ return mvebu_coreclk_setup(np, &mv88f5182_coreclks);
+}
+
+CLK_OF_DECLARE(mv88f5182_clk, "marvell,mv88f5182-core-clock", mv88f5182_clk_init);
+
+/*
+ * Orion 5281
+ */
+
+static u32 __init mv88f5281_get_tclk_freq(void __iomem *sar)
+{
+ /* On 5281, tclk is always 166 Mhz */
+ return 166666667;
+}
+
+#define SAR_MV88F5281_CPU_FREQ 4
+#define SAR_MV88F5281_CPU_FREQ_MASK 0xf
+
+static u32 __init mv88f5281_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5281_CPU_FREQ) &
+ SAR_MV88F5281_CPU_FREQ_MASK;
+ if (opt == 1 || opt == 2)
+ return 400000000;
+ else if (opt == 3)
+ return 500000000;
+ else
+ return 0;
+}
+
+static void __init mv88f5281_get_clk_ratio(void __iomem *sar, int id,
+ int *mult, int *div)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5281_CPU_FREQ) &
+ SAR_MV88F5281_CPU_FREQ_MASK;
+ if (opt == 1) {
+ *mult = 1;
+ *div = 2;
+ } else if (opt == 2 || opt == 3) {
+ *mult = 1;
+ *div = 3;
+ } else {
+ *mult = 0;
+ *div = 1;
+ }
+}
+
+static const struct coreclk_soc_desc mv88f5281_coreclks = {
+ .get_tclk_freq = mv88f5281_get_tclk_freq,
+ .get_cpu_freq = mv88f5281_get_cpu_freq,
+ .get_clk_ratio = mv88f5281_get_clk_ratio,
+ .ratios = orion_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
+};
+
+static void __init mv88f5281_clk_init(struct device_node *np)
+{
+ return mvebu_coreclk_setup(np, &mv88f5281_coreclks);
+}
+
+CLK_OF_DECLARE(mv88f5281_clk, "marvell,mv88f5281-core-clock", mv88f5281_clk_init);
+
+/*
+ * Orion 6183
+ */
+
+#define SAR_MV88F6183_TCLK_FREQ 9
+#define SAR_MV88F6183_TCLK_FREQ_MASK 0x1
+
+static u32 __init mv88f6183_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6183_TCLK_FREQ) &
+ SAR_MV88F6183_TCLK_FREQ_MASK;
+ if (opt == 0)
+ return 133333333;
+ else if (opt == 1)
+ return 166666667;
+ else
+ return 0;
+}
+
+#define SAR_MV88F6183_CPU_FREQ 1
+#define SAR_MV88F6183_CPU_FREQ_MASK 0x3f
+
+static u32 __init mv88f6183_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6183_CPU_FREQ) &
+ SAR_MV88F6183_CPU_FREQ_MASK;
+ if (opt == 9)
+ return 333333333;
+ else if (opt == 17)
+ return 400000000;
+ else
+ return 0;
+}
+
+static void __init mv88f6183_get_clk_ratio(void __iomem *sar, int id,
+ int *mult, int *div)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6183_CPU_FREQ) &
+ SAR_MV88F6183_CPU_FREQ_MASK;
+ if (opt == 9 || opt == 17) {
+ *mult = 1;
+ *div = 2;
+ } else {
+ *mult = 0;
+ *div = 1;
+ }
+}
+
+static const struct coreclk_soc_desc mv88f6183_coreclks = {
+ .get_tclk_freq = mv88f6183_get_tclk_freq,
+ .get_cpu_freq = mv88f6183_get_cpu_freq,
+ .get_clk_ratio = mv88f6183_get_clk_ratio,
+ .ratios = orion_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
+};
+
+
+static void __init mv88f6183_clk_init(struct device_node *np)
+{
+ return mvebu_coreclk_setup(np, &mv88f6183_coreclks);
+}
+
+CLK_OF_DECLARE(mv88f6183_clk, "marvell,mv88f6183-core-clock", mv88f6183_clk_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 00:59:12 +0000