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-rw-r--r--drivers/clk/renesas/r8a77970-cpg-mssr.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/drivers/clk/renesas/r8a77970-cpg-mssr.c b/drivers/clk/renesas/r8a77970-cpg-mssr.c
new file mode 100644
index 000000000..0f59c8422
--- /dev/null
+++ b/drivers/clk/renesas/r8a77970-cpg-mssr.c
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * r8a77970 Clock Pulse Generator / Module Standby and Software Reset
+ *
+ * Copyright (C) 2017-2018 Cogent Embedded Inc.
+ *
+ * Based on r8a7795-cpg-mssr.c
+ *
+ * Copyright (C) 2015 Glider bvba
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/soc/renesas/rcar-rst.h>
+
+#include <dt-bindings/clock/r8a77970-cpg-mssr.h>
+
+#include "renesas-cpg-mssr.h"
+#include "rcar-gen3-cpg.h"
+
+#define CPG_SD0CKCR 0x0074
+
+enum r8a77970_clk_types {
+ CLK_TYPE_R8A77970_SD0H = CLK_TYPE_GEN3_SOC_BASE,
+ CLK_TYPE_R8A77970_SD0,
+};
+
+enum clk_ids {
+ /* Core Clock Outputs exported to DT */
+ LAST_DT_CORE_CLK = R8A77970_CLK_OSC,
+
+ /* External Input Clocks */
+ CLK_EXTAL,
+ CLK_EXTALR,
+
+ /* Internal Core Clocks */
+ CLK_MAIN,
+ CLK_PLL0,
+ CLK_PLL1,
+ CLK_PLL3,
+ CLK_PLL1_DIV2,
+ CLK_PLL1_DIV4,
+
+ /* Module Clocks */
+ MOD_CLK_BASE
+};
+
+static spinlock_t cpg_lock;
+
+static const struct clk_div_table cpg_sd0h_div_table[] = {
+ { 0, 2 }, { 1, 3 }, { 2, 4 }, { 3, 6 },
+ { 4, 8 }, { 5, 12 }, { 6, 16 }, { 7, 18 },
+ { 8, 24 }, { 10, 36 }, { 11, 48 }, { 0, 0 },
+};
+
+static const struct clk_div_table cpg_sd0_div_table[] = {
+ { 4, 8 }, { 5, 12 }, { 6, 16 }, { 7, 18 },
+ { 8, 24 }, { 10, 36 }, { 11, 48 }, { 12, 10 },
+ { 0, 0 },
+};
+
+static const struct cpg_core_clk r8a77970_core_clks[] __initconst = {
+ /* External Clock Inputs */
+ DEF_INPUT("extal", CLK_EXTAL),
+ DEF_INPUT("extalr", CLK_EXTALR),
+
+ /* Internal Core Clocks */
+ DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
+ DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
+ DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
+ DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
+
+ DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
+ DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1),
+
+ /* Core Clock Outputs */
+ DEF_FIXED("ztr", R8A77970_CLK_ZTR, CLK_PLL1_DIV2, 6, 1),
+ DEF_FIXED("ztrd2", R8A77970_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
+ DEF_FIXED("zt", R8A77970_CLK_ZT, CLK_PLL1_DIV2, 4, 1),
+ DEF_FIXED("zx", R8A77970_CLK_ZX, CLK_PLL1_DIV2, 3, 1),
+ DEF_FIXED("s1d1", R8A77970_CLK_S1D1, CLK_PLL1_DIV2, 4, 1),
+ DEF_FIXED("s1d2", R8A77970_CLK_S1D2, CLK_PLL1_DIV2, 8, 1),
+ DEF_FIXED("s1d4", R8A77970_CLK_S1D4, CLK_PLL1_DIV2, 16, 1),
+ DEF_FIXED("s2d1", R8A77970_CLK_S2D1, CLK_PLL1_DIV2, 6, 1),
+ DEF_FIXED("s2d2", R8A77970_CLK_S2D2, CLK_PLL1_DIV2, 12, 1),
+ DEF_FIXED("s2d4", R8A77970_CLK_S2D4, CLK_PLL1_DIV2, 24, 1),
+
+ DEF_BASE("sd0h", R8A77970_CLK_SD0H, CLK_TYPE_R8A77970_SD0H,
+ CLK_PLL1_DIV2),
+ DEF_BASE("sd0", R8A77970_CLK_SD0, CLK_TYPE_R8A77970_SD0, CLK_PLL1_DIV2),
+
+ DEF_FIXED("rpc", R8A77970_CLK_RPC, CLK_PLL1_DIV2, 5, 1),
+ DEF_FIXED("rpcd2", R8A77970_CLK_RPCD2, CLK_PLL1_DIV2, 10, 1),
+
+ DEF_FIXED("cl", R8A77970_CLK_CL, CLK_PLL1_DIV2, 48, 1),
+ DEF_FIXED("cp", R8A77970_CLK_CP, CLK_EXTAL, 2, 1),
+ DEF_FIXED("cpex", R8A77970_CLK_CPEX, CLK_EXTAL, 2, 1),
+
+ DEF_DIV6P1("canfd", R8A77970_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
+ DEF_DIV6P1("mso", R8A77970_CLK_MSO, CLK_PLL1_DIV4, 0x014),
+ DEF_DIV6P1("csi0", R8A77970_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
+
+ DEF_FIXED("osc", R8A77970_CLK_OSC, CLK_PLL1_DIV2, 12*1024, 1),
+ DEF_FIXED("r", R8A77970_CLK_R, CLK_EXTALR, 1, 1),
+};
+
+static const struct mssr_mod_clk r8a77970_mod_clks[] __initconst = {
+ DEF_MOD("tmu4", 121, R8A77970_CLK_S2D2),
+ DEF_MOD("tmu3", 122, R8A77970_CLK_S2D2),
+ DEF_MOD("tmu2", 123, R8A77970_CLK_S2D2),
+ DEF_MOD("tmu1", 124, R8A77970_CLK_S2D2),
+ DEF_MOD("tmu0", 125, R8A77970_CLK_CP),
+ DEF_MOD("ivcp1e", 127, R8A77970_CLK_S2D1),
+ DEF_MOD("scif4", 203, R8A77970_CLK_S2D4),
+ DEF_MOD("scif3", 204, R8A77970_CLK_S2D4),
+ DEF_MOD("scif1", 206, R8A77970_CLK_S2D4),
+ DEF_MOD("scif0", 207, R8A77970_CLK_S2D4),
+ DEF_MOD("msiof3", 208, R8A77970_CLK_MSO),
+ DEF_MOD("msiof2", 209, R8A77970_CLK_MSO),
+ DEF_MOD("msiof1", 210, R8A77970_CLK_MSO),
+ DEF_MOD("msiof0", 211, R8A77970_CLK_MSO),
+ DEF_MOD("mfis", 213, R8A77970_CLK_S2D2),
+ DEF_MOD("sys-dmac2", 217, R8A77970_CLK_S2D1),
+ DEF_MOD("sys-dmac1", 218, R8A77970_CLK_S2D1),
+ DEF_MOD("cmt3", 300, R8A77970_CLK_R),
+ DEF_MOD("cmt2", 301, R8A77970_CLK_R),
+ DEF_MOD("cmt1", 302, R8A77970_CLK_R),
+ DEF_MOD("cmt0", 303, R8A77970_CLK_R),
+ DEF_MOD("tpu0", 304, R8A77970_CLK_S2D4),
+ DEF_MOD("sd-if", 314, R8A77970_CLK_SD0),
+ DEF_MOD("rwdt", 402, R8A77970_CLK_R),
+ DEF_MOD("intc-ex", 407, R8A77970_CLK_CP),
+ DEF_MOD("intc-ap", 408, R8A77970_CLK_S2D1),
+ DEF_MOD("hscif3", 517, R8A77970_CLK_S2D1),
+ DEF_MOD("hscif2", 518, R8A77970_CLK_S2D1),
+ DEF_MOD("hscif1", 519, R8A77970_CLK_S2D1),
+ DEF_MOD("hscif0", 520, R8A77970_CLK_S2D1),
+ DEF_MOD("thermal", 522, R8A77970_CLK_CP),
+ DEF_MOD("pwm", 523, R8A77970_CLK_S2D4),
+ DEF_MOD("fcpvd0", 603, R8A77970_CLK_S2D1),
+ DEF_MOD("vspd0", 623, R8A77970_CLK_S2D1),
+ DEF_MOD("csi40", 716, R8A77970_CLK_CSI0),
+ DEF_MOD("du0", 724, R8A77970_CLK_S2D1),
+ DEF_MOD("lvds", 727, R8A77970_CLK_S2D1),
+ DEF_MOD("vin3", 808, R8A77970_CLK_S2D1),
+ DEF_MOD("vin2", 809, R8A77970_CLK_S2D1),
+ DEF_MOD("vin1", 810, R8A77970_CLK_S2D1),
+ DEF_MOD("vin0", 811, R8A77970_CLK_S2D1),
+ DEF_MOD("etheravb", 812, R8A77970_CLK_S2D2),
+ DEF_MOD("gpio5", 907, R8A77970_CLK_CP),
+ DEF_MOD("gpio4", 908, R8A77970_CLK_CP),
+ DEF_MOD("gpio3", 909, R8A77970_CLK_CP),
+ DEF_MOD("gpio2", 910, R8A77970_CLK_CP),
+ DEF_MOD("gpio1", 911, R8A77970_CLK_CP),
+ DEF_MOD("gpio0", 912, R8A77970_CLK_CP),
+ DEF_MOD("can-fd", 914, R8A77970_CLK_S2D2),
+ DEF_MOD("rpc-if", 917, R8A77970_CLK_RPC),
+ DEF_MOD("i2c4", 927, R8A77970_CLK_S2D2),
+ DEF_MOD("i2c3", 928, R8A77970_CLK_S2D2),
+ DEF_MOD("i2c2", 929, R8A77970_CLK_S2D2),
+ DEF_MOD("i2c1", 930, R8A77970_CLK_S2D2),
+ DEF_MOD("i2c0", 931, R8A77970_CLK_S2D2),
+};
+
+static const unsigned int r8a77970_crit_mod_clks[] __initconst = {
+ MOD_CLK_ID(402), /* RWDT */
+ MOD_CLK_ID(408), /* INTC-AP (GIC) */
+};
+
+/*
+ * CPG Clock Data
+ */
+
+/*
+ * MD EXTAL PLL0 PLL1 PLL3
+ * 14 13 19 (MHz)
+ *-------------------------------------------------
+ * 0 0 0 16.66 x 1 x192 x192 x96
+ * 0 0 1 16.66 x 1 x192 x192 x80
+ * 0 1 0 20 x 1 x160 x160 x80
+ * 0 1 1 20 x 1 x160 x160 x66
+ * 1 0 0 27 / 2 x236 x236 x118
+ * 1 0 1 27 / 2 x236 x236 x98
+ * 1 1 0 33.33 / 2 x192 x192 x96
+ * 1 1 1 33.33 / 2 x192 x192 x80
+ */
+#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 12) | \
+ (((md) & BIT(13)) >> 12) | \
+ (((md) & BIT(19)) >> 19))
+
+static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[8] __initconst = {
+ /* EXTAL div PLL1 mult/div PLL3 mult/div */
+ { 1, 192, 1, 96, 1, },
+ { 1, 192, 1, 80, 1, },
+ { 1, 160, 1, 80, 1, },
+ { 1, 160, 1, 66, 1, },
+ { 2, 236, 1, 118, 1, },
+ { 2, 236, 1, 98, 1, },
+ { 2, 192, 1, 96, 1, },
+ { 2, 192, 1, 80, 1, },
+};
+
+static int __init r8a77970_cpg_mssr_init(struct device *dev)
+{
+ const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
+ u32 cpg_mode;
+ int error;
+
+ error = rcar_rst_read_mode_pins(&cpg_mode);
+ if (error)
+ return error;
+
+ spin_lock_init(&cpg_lock);
+
+ cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
+
+ return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
+}
+
+static struct clk * __init r8a77970_cpg_clk_register(struct device *dev,
+ const struct cpg_core_clk *core, const struct cpg_mssr_info *info,
+ struct clk **clks, void __iomem *base,
+ struct raw_notifier_head *notifiers)
+{
+ const struct clk_div_table *table;
+ const struct clk *parent;
+ unsigned int shift;
+
+ switch (core->type) {
+ case CLK_TYPE_R8A77970_SD0H:
+ table = cpg_sd0h_div_table;
+ shift = 8;
+ break;
+ case CLK_TYPE_R8A77970_SD0:
+ table = cpg_sd0_div_table;
+ shift = 4;
+ break;
+ default:
+ return rcar_gen3_cpg_clk_register(dev, core, info, clks, base,
+ notifiers);
+ }
+
+ parent = clks[core->parent];
+ if (IS_ERR(parent))
+ return ERR_CAST(parent);
+
+ return clk_register_divider_table(NULL, core->name,
+ __clk_get_name(parent), 0,
+ base + CPG_SD0CKCR,
+ shift, 4, 0, table, &cpg_lock);
+}
+
+const struct cpg_mssr_info r8a77970_cpg_mssr_info __initconst = {
+ /* Core Clocks */
+ .core_clks = r8a77970_core_clks,
+ .num_core_clks = ARRAY_SIZE(r8a77970_core_clks),
+ .last_dt_core_clk = LAST_DT_CORE_CLK,
+ .num_total_core_clks = MOD_CLK_BASE,
+
+ /* Module Clocks */
+ .mod_clks = r8a77970_mod_clks,
+ .num_mod_clks = ARRAY_SIZE(r8a77970_mod_clks),
+ .num_hw_mod_clks = 12 * 32,
+
+ /* Critical Module Clocks */
+ .crit_mod_clks = r8a77970_crit_mod_clks,
+ .num_crit_mod_clks = ARRAY_SIZE(r8a77970_crit_mod_clks),
+
+ /* Callbacks */
+ .init = r8a77970_cpg_mssr_init,
+ .cpg_clk_register = r8a77970_cpg_clk_register,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 18:31:50 +0000