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-rw-r--r--drivers/clk/clk-qoriq.c1618
1 files changed, 1618 insertions, 0 deletions
diff --git a/drivers/clk/clk-qoriq.c b/drivers/clk/clk-qoriq.c
new file mode 100644
index 000000000..5eddb9f0d
--- /dev/null
+++ b/drivers/clk/clk-qoriq.c
@@ -0,0 +1,1618 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ * Copyright 2021 NXP
+ *
+ * clock driver for Freescale QorIQ SoCs.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <dt-bindings/clock/fsl,qoriq-clockgen.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/fsl/guts.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+#define PLL_DIV1 0
+#define PLL_DIV2 1
+#define PLL_DIV3 2
+#define PLL_DIV4 3
+
+#define PLATFORM_PLL 0
+#define CGA_PLL1 1
+#define CGA_PLL2 2
+#define CGA_PLL3 3
+#define CGA_PLL4 4 /* only on clockgen-1.0, which lacks CGB */
+#define CGB_PLL1 4
+#define CGB_PLL2 5
+#define MAX_PLL_DIV 32
+
+struct clockgen_pll_div {
+ struct clk *clk;
+ char name[32];
+};
+
+struct clockgen_pll {
+ struct clockgen_pll_div div[MAX_PLL_DIV];
+};
+
+#define CLKSEL_VALID 1
+#define CLKSEL_80PCT 2 /* Only allowed if PLL <= 80% of max cpu freq */
+
+struct clockgen_sourceinfo {
+ u32 flags; /* CLKSEL_xxx */
+ int pll; /* CGx_PLLn */
+ int div; /* PLL_DIVn */
+};
+
+#define NUM_MUX_PARENTS 16
+
+struct clockgen_muxinfo {
+ struct clockgen_sourceinfo clksel[NUM_MUX_PARENTS];
+};
+
+#define NUM_HWACCEL 5
+#define NUM_CMUX 8
+
+struct clockgen;
+
+/*
+ * cmux freq must be >= platform pll.
+ * If not set, cmux freq must be >= platform pll/2
+ */
+#define CG_CMUX_GE_PLAT 1
+
+#define CG_PLL_8BIT 2 /* PLLCnGSR[CFG] is 8 bits, not 6 */
+#define CG_VER3 4 /* version 3 cg: reg layout different */
+#define CG_LITTLE_ENDIAN 8
+
+struct clockgen_chipinfo {
+ const char *compat, *guts_compat;
+ const struct clockgen_muxinfo *cmux_groups[2];
+ const struct clockgen_muxinfo *hwaccel[NUM_HWACCEL];
+ void (*init_periph)(struct clockgen *cg);
+ int cmux_to_group[NUM_CMUX + 1]; /* array should be -1 terminated */
+ u32 pll_mask; /* 1 << n bit set if PLL n is valid */
+ u32 flags; /* CG_xxx */
+};
+
+struct clockgen {
+ struct device_node *node;
+ void __iomem *regs;
+ struct clockgen_chipinfo info; /* mutable copy */
+ struct clk *sysclk, *coreclk;
+ struct clockgen_pll pll[6];
+ struct clk *cmux[NUM_CMUX];
+ struct clk *hwaccel[NUM_HWACCEL];
+ struct clk *fman[2];
+ struct ccsr_guts __iomem *guts;
+};
+
+static struct clockgen clockgen;
+static bool add_cpufreq_dev __initdata;
+
+static void cg_out(struct clockgen *cg, u32 val, u32 __iomem *reg)
+{
+ if (cg->info.flags & CG_LITTLE_ENDIAN)
+ iowrite32(val, reg);
+ else
+ iowrite32be(val, reg);
+}
+
+static u32 cg_in(struct clockgen *cg, u32 __iomem *reg)
+{
+ u32 val;
+
+ if (cg->info.flags & CG_LITTLE_ENDIAN)
+ val = ioread32(reg);
+ else
+ val = ioread32be(reg);
+
+ return val;
+}
+
+static const struct clockgen_muxinfo p2041_cmux_grp1 = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ }
+};
+
+static const struct clockgen_muxinfo p2041_cmux_grp2 = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ }
+};
+
+static const struct clockgen_muxinfo p5020_cmux_grp1 = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ [4] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV1 },
+ }
+};
+
+static const struct clockgen_muxinfo p5020_cmux_grp2 = {
+ {
+ [0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
+ [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ }
+};
+
+static const struct clockgen_muxinfo p5040_cmux_grp1 = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ [4] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV1 },
+ [5] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV2 },
+ }
+};
+
+static const struct clockgen_muxinfo p5040_cmux_grp2 = {
+ {
+ [0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
+ [1] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV2 },
+ [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ }
+};
+
+static const struct clockgen_muxinfo p4080_cmux_grp1 = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ [8] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL3, PLL_DIV1 },
+ }
+};
+
+static const struct clockgen_muxinfo p4080_cmux_grp2 = {
+ {
+ [0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
+ [8] = { CLKSEL_VALID, CGA_PLL3, PLL_DIV1 },
+ [9] = { CLKSEL_VALID, CGA_PLL3, PLL_DIV2 },
+ [12] = { CLKSEL_VALID, CGA_PLL4, PLL_DIV1 },
+ [13] = { CLKSEL_VALID, CGA_PLL4, PLL_DIV2 },
+ }
+};
+
+static const struct clockgen_muxinfo t1023_cmux = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ }
+};
+
+static const struct clockgen_muxinfo t1040_cmux = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ }
+};
+
+
+static const struct clockgen_muxinfo clockgen2_cmux_cga = {
+ {
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL3, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL3, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL3, PLL_DIV4 },
+ },
+};
+
+static const struct clockgen_muxinfo clockgen2_cmux_cga12 = {
+ {
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
+ },
+};
+
+static const struct clockgen_muxinfo clockgen2_cmux_cgb = {
+ {
+ { CLKSEL_VALID, CGB_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGB_PLL1, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGB_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGB_PLL2, PLL_DIV4 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1021a_cmux = {
+ {
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ }
+};
+
+static const struct clockgen_muxinfo ls1028a_hwa1 = {
+ {
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1028a_hwa2 = {
+ {
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1028a_hwa3 = {
+ {
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1028a_hwa4 = {
+ {
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1043a_hwa1 = {
+ {
+ {},
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ {},
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1043a_hwa2 = {
+ {
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1046a_hwa1 = {
+ {
+ {},
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1046a_hwa2 = {
+ {
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ {},
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1088a_hwa1 = {
+ {
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1088a_hwa2 = {
+ {
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo ls1012a_cmux = {
+ {
+ [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ {},
+ [2] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ }
+};
+
+static const struct clockgen_muxinfo t1023_hwa1 = {
+ {
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo t1023_hwa2 = {
+ {
+ [6] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ },
+};
+
+static const struct clockgen_muxinfo t2080_hwa1 = {
+ {
+ {},
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo t2080_hwa2 = {
+ {
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo t4240_hwa1 = {
+ {
+ { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
+ { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
+ {},
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
+ { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
+ },
+};
+
+static const struct clockgen_muxinfo t4240_hwa4 = {
+ {
+ [2] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
+ [3] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV3 },
+ [4] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV4 },
+ [5] = { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ [6] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
+ },
+};
+
+static const struct clockgen_muxinfo t4240_hwa5 = {
+ {
+ [2] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
+ [3] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV3 },
+ [4] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV4 },
+ [5] = { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
+ [6] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
+ [7] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV3 },
+ },
+};
+
+#define RCWSR7_FM1_CLK_SEL 0x40000000
+#define RCWSR7_FM2_CLK_SEL 0x20000000
+#define RCWSR7_HWA_ASYNC_DIV 0x04000000
+
+static void __init p2041_init_periph(struct clockgen *cg)
+{
+ u32 reg;
+
+ reg = ioread32be(&cg->guts->rcwsr[7]);
+
+ if (reg & RCWSR7_FM1_CLK_SEL)
+ cg->fman[0] = cg->pll[CGA_PLL2].div[PLL_DIV2].clk;
+ else
+ cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
+}
+
+static void __init p4080_init_periph(struct clockgen *cg)
+{
+ u32 reg;
+
+ reg = ioread32be(&cg->guts->rcwsr[7]);
+
+ if (reg & RCWSR7_FM1_CLK_SEL)
+ cg->fman[0] = cg->pll[CGA_PLL3].div[PLL_DIV2].clk;
+ else
+ cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
+
+ if (reg & RCWSR7_FM2_CLK_SEL)
+ cg->fman[1] = cg->pll[CGA_PLL3].div[PLL_DIV2].clk;
+ else
+ cg->fman[1] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
+}
+
+static void __init p5020_init_periph(struct clockgen *cg)
+{
+ u32 reg;
+ int div = PLL_DIV2;
+
+ reg = ioread32be(&cg->guts->rcwsr[7]);
+ if (reg & RCWSR7_HWA_ASYNC_DIV)
+ div = PLL_DIV4;
+
+ if (reg & RCWSR7_FM1_CLK_SEL)
+ cg->fman[0] = cg->pll[CGA_PLL2].div[div].clk;
+ else
+ cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
+}
+
+static void __init p5040_init_periph(struct clockgen *cg)
+{
+ u32 reg;
+ int div = PLL_DIV2;
+
+ reg = ioread32be(&cg->guts->rcwsr[7]);
+ if (reg & RCWSR7_HWA_ASYNC_DIV)
+ div = PLL_DIV4;
+
+ if (reg & RCWSR7_FM1_CLK_SEL)
+ cg->fman[0] = cg->pll[CGA_PLL3].div[div].clk;
+ else
+ cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
+
+ if (reg & RCWSR7_FM2_CLK_SEL)
+ cg->fman[1] = cg->pll[CGA_PLL3].div[div].clk;
+ else
+ cg->fman[1] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
+}
+
+static void __init t1023_init_periph(struct clockgen *cg)
+{
+ cg->fman[0] = cg->hwaccel[1];
+}
+
+static void __init t1040_init_periph(struct clockgen *cg)
+{
+ cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV1].clk;
+}
+
+static void __init t2080_init_periph(struct clockgen *cg)
+{
+ cg->fman[0] = cg->hwaccel[0];
+}
+
+static void __init t4240_init_periph(struct clockgen *cg)
+{
+ cg->fman[0] = cg->hwaccel[3];
+ cg->fman[1] = cg->hwaccel[4];
+}
+
+static const struct clockgen_chipinfo chipinfo[] = {
+ {
+ .compat = "fsl,b4420-clockgen",
+ .guts_compat = "fsl,b4860-device-config",
+ .init_periph = t2080_init_periph,
+ .cmux_groups = {
+ &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
+ },
+ .hwaccel = {
+ &t2080_hwa1
+ },
+ .cmux_to_group = {
+ 0, 1, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2) | BIT(CGA_PLL3) |
+ BIT(CGB_PLL1) | BIT(CGB_PLL2),
+ .flags = CG_PLL_8BIT,
+ },
+ {
+ .compat = "fsl,b4860-clockgen",
+ .guts_compat = "fsl,b4860-device-config",
+ .init_periph = t2080_init_periph,
+ .cmux_groups = {
+ &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
+ },
+ .hwaccel = {
+ &t2080_hwa1
+ },
+ .cmux_to_group = {
+ 0, 1, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2) | BIT(CGA_PLL3) |
+ BIT(CGB_PLL1) | BIT(CGB_PLL2),
+ .flags = CG_PLL_8BIT,
+ },
+ {
+ .compat = "fsl,ls1021a-clockgen",
+ .cmux_groups = {
+ &ls1021a_cmux
+ },
+ .cmux_to_group = {
+ 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ },
+ {
+ .compat = "fsl,ls1028a-clockgen",
+ .cmux_groups = {
+ &clockgen2_cmux_cga12
+ },
+ .hwaccel = {
+ &ls1028a_hwa1, &ls1028a_hwa2,
+ &ls1028a_hwa3, &ls1028a_hwa4
+ },
+ .cmux_to_group = {
+ 0, 0, 0, 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ .flags = CG_VER3 | CG_LITTLE_ENDIAN,
+ },
+ {
+ .compat = "fsl,ls1043a-clockgen",
+ .init_periph = t2080_init_periph,
+ .cmux_groups = {
+ &t1040_cmux
+ },
+ .hwaccel = {
+ &ls1043a_hwa1, &ls1043a_hwa2
+ },
+ .cmux_to_group = {
+ 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ .flags = CG_PLL_8BIT,
+ },
+ {
+ .compat = "fsl,ls1046a-clockgen",
+ .init_periph = t2080_init_periph,
+ .cmux_groups = {
+ &t1040_cmux
+ },
+ .hwaccel = {
+ &ls1046a_hwa1, &ls1046a_hwa2
+ },
+ .cmux_to_group = {
+ 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ .flags = CG_PLL_8BIT,
+ },
+ {
+ .compat = "fsl,ls1088a-clockgen",
+ .cmux_groups = {
+ &clockgen2_cmux_cga12
+ },
+ .hwaccel = {
+ &ls1088a_hwa1, &ls1088a_hwa2
+ },
+ .cmux_to_group = {
+ 0, 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ .flags = CG_VER3 | CG_LITTLE_ENDIAN,
+ },
+ {
+ .compat = "fsl,ls1012a-clockgen",
+ .cmux_groups = {
+ &ls1012a_cmux
+ },
+ .cmux_to_group = {
+ 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) | BIT(CGA_PLL1),
+ },
+ {
+ .compat = "fsl,ls2080a-clockgen",
+ .cmux_groups = {
+ &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
+ },
+ .cmux_to_group = {
+ 0, 0, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2) |
+ BIT(CGB_PLL1) | BIT(CGB_PLL2),
+ .flags = CG_VER3 | CG_LITTLE_ENDIAN,
+ },
+ {
+ .compat = "fsl,lx2160a-clockgen",
+ .cmux_groups = {
+ &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
+ },
+ .cmux_to_group = {
+ 0, 0, 0, 0, 1, 1, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2) |
+ BIT(CGB_PLL1) | BIT(CGB_PLL2),
+ .flags = CG_VER3 | CG_LITTLE_ENDIAN,
+ },
+ {
+ .compat = "fsl,p2041-clockgen",
+ .guts_compat = "fsl,qoriq-device-config-1.0",
+ .init_periph = p2041_init_periph,
+ .cmux_groups = {
+ &p2041_cmux_grp1, &p2041_cmux_grp2
+ },
+ .cmux_to_group = {
+ 0, 0, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ },
+ {
+ .compat = "fsl,p3041-clockgen",
+ .guts_compat = "fsl,qoriq-device-config-1.0",
+ .init_periph = p2041_init_periph,
+ .cmux_groups = {
+ &p2041_cmux_grp1, &p2041_cmux_grp2
+ },
+ .cmux_to_group = {
+ 0, 0, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ },
+ {
+ .compat = "fsl,p4080-clockgen",
+ .guts_compat = "fsl,qoriq-device-config-1.0",
+ .init_periph = p4080_init_periph,
+ .cmux_groups = {
+ &p4080_cmux_grp1, &p4080_cmux_grp2
+ },
+ .cmux_to_group = {
+ 0, 0, 0, 0, 1, 1, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2) |
+ BIT(CGA_PLL3) | BIT(CGA_PLL4),
+ },
+ {
+ .compat = "fsl,p5020-clockgen",
+ .guts_compat = "fsl,qoriq-device-config-1.0",
+ .init_periph = p5020_init_periph,
+ .cmux_groups = {
+ &p5020_cmux_grp1, &p5020_cmux_grp2
+ },
+ .cmux_to_group = {
+ 0, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ },
+ {
+ .compat = "fsl,p5040-clockgen",
+ .guts_compat = "fsl,p5040-device-config",
+ .init_periph = p5040_init_periph,
+ .cmux_groups = {
+ &p5040_cmux_grp1, &p5040_cmux_grp2
+ },
+ .cmux_to_group = {
+ 0, 0, 1, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2) | BIT(CGA_PLL3),
+ },
+ {
+ .compat = "fsl,t1023-clockgen",
+ .guts_compat = "fsl,t1023-device-config",
+ .init_periph = t1023_init_periph,
+ .cmux_groups = {
+ &t1023_cmux
+ },
+ .hwaccel = {
+ &t1023_hwa1, &t1023_hwa2
+ },
+ .cmux_to_group = {
+ 0, 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) | BIT(CGA_PLL1),
+ .flags = CG_PLL_8BIT,
+ },
+ {
+ .compat = "fsl,t1040-clockgen",
+ .guts_compat = "fsl,t1040-device-config",
+ .init_periph = t1040_init_periph,
+ .cmux_groups = {
+ &t1040_cmux
+ },
+ .cmux_to_group = {
+ 0, 0, 0, 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ .flags = CG_PLL_8BIT,
+ },
+ {
+ .compat = "fsl,t2080-clockgen",
+ .guts_compat = "fsl,t2080-device-config",
+ .init_periph = t2080_init_periph,
+ .cmux_groups = {
+ &clockgen2_cmux_cga12
+ },
+ .hwaccel = {
+ &t2080_hwa1, &t2080_hwa2
+ },
+ .cmux_to_group = {
+ 0, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2),
+ .flags = CG_PLL_8BIT,
+ },
+ {
+ .compat = "fsl,t4240-clockgen",
+ .guts_compat = "fsl,t4240-device-config",
+ .init_periph = t4240_init_periph,
+ .cmux_groups = {
+ &clockgen2_cmux_cga, &clockgen2_cmux_cgb
+ },
+ .hwaccel = {
+ &t4240_hwa1, NULL, NULL, &t4240_hwa4, &t4240_hwa5
+ },
+ .cmux_to_group = {
+ 0, 0, 1, -1
+ },
+ .pll_mask = BIT(PLATFORM_PLL) |
+ BIT(CGA_PLL1) | BIT(CGA_PLL2) | BIT(CGA_PLL3) |
+ BIT(CGB_PLL1) | BIT(CGB_PLL2),
+ .flags = CG_PLL_8BIT,
+ },
+ {},
+};
+
+struct mux_hwclock {
+ struct clk_hw hw;
+ struct clockgen *cg;
+ const struct clockgen_muxinfo *info;
+ u32 __iomem *reg;
+ u8 parent_to_clksel[NUM_MUX_PARENTS];
+ s8 clksel_to_parent[NUM_MUX_PARENTS];
+ int num_parents;
+};
+
+#define to_mux_hwclock(p) container_of(p, struct mux_hwclock, hw)
+#define CLKSEL_MASK 0x78000000
+#define CLKSEL_SHIFT 27
+
+static int mux_set_parent(struct clk_hw *hw, u8 idx)
+{
+ struct mux_hwclock *hwc = to_mux_hwclock(hw);
+ u32 clksel;
+
+ if (idx >= hwc->num_parents)
+ return -EINVAL;
+
+ clksel = hwc->parent_to_clksel[idx];
+ cg_out(hwc->cg, (clksel << CLKSEL_SHIFT) & CLKSEL_MASK, hwc->reg);
+
+ return 0;
+}
+
+static u8 mux_get_parent(struct clk_hw *hw)
+{
+ struct mux_hwclock *hwc = to_mux_hwclock(hw);
+ u32 clksel;
+ s8 ret;
+
+ clksel = (cg_in(hwc->cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
+
+ ret = hwc->clksel_to_parent[clksel];
+ if (ret < 0) {
+ pr_err("%s: mux at %p has bad clksel\n", __func__, hwc->reg);
+ return 0;
+ }
+
+ return ret;
+}
+
+static const struct clk_ops cmux_ops = {
+ .get_parent = mux_get_parent,
+ .set_parent = mux_set_parent,
+};
+
+/*
+ * Don't allow setting for now, as the clock options haven't been
+ * sanitized for additional restrictions.
+ */
+static const struct clk_ops hwaccel_ops = {
+ .get_parent = mux_get_parent,
+};
+
+static const struct clockgen_pll_div *get_pll_div(struct clockgen *cg,
+ struct mux_hwclock *hwc,
+ int idx)
+{
+ int pll, div;
+
+ if (!(hwc->info->clksel[idx].flags & CLKSEL_VALID))
+ return NULL;
+
+ pll = hwc->info->clksel[idx].pll;
+ div = hwc->info->clksel[idx].div;
+
+ return &cg->pll[pll].div[div];
+}
+
+static struct clk * __init create_mux_common(struct clockgen *cg,
+ struct mux_hwclock *hwc,
+ const struct clk_ops *ops,
+ unsigned long min_rate,
+ unsigned long max_rate,
+ unsigned long pct80_rate,
+ const char *fmt, int idx)
+{
+ struct clk_init_data init = {};
+ struct clk *clk;
+ const struct clockgen_pll_div *div;
+ const char *parent_names[NUM_MUX_PARENTS];
+ char name[32];
+ int i, j;
+
+ snprintf(name, sizeof(name), fmt, idx);
+
+ for (i = 0, j = 0; i < NUM_MUX_PARENTS; i++) {
+ unsigned long rate;
+
+ hwc->clksel_to_parent[i] = -1;
+
+ div = get_pll_div(cg, hwc, i);
+ if (!div)
+ continue;
+
+ rate = clk_get_rate(div->clk);
+
+ if (hwc->info->clksel[i].flags & CLKSEL_80PCT &&
+ rate > pct80_rate)
+ continue;
+ if (rate < min_rate)
+ continue;
+ if (rate > max_rate)
+ continue;
+
+ parent_names[j] = div->name;
+ hwc->parent_to_clksel[j] = i;
+ hwc->clksel_to_parent[i] = j;
+ j++;
+ }
+
+ init.name = name;
+ init.ops = ops;
+ init.parent_names = parent_names;
+ init.num_parents = hwc->num_parents = j;
+ init.flags = 0;
+ hwc->hw.init = &init;
+ hwc->cg = cg;
+
+ clk = clk_register(NULL, &hwc->hw);
+ if (IS_ERR(clk)) {
+ pr_err("%s: Couldn't register %s: %ld\n", __func__, name,
+ PTR_ERR(clk));
+ kfree(hwc);
+ return NULL;
+ }
+
+ return clk;
+}
+
+static struct clk * __init create_one_cmux(struct clockgen *cg, int idx)
+{
+ struct mux_hwclock *hwc;
+ const struct clockgen_pll_div *div;
+ unsigned long plat_rate, min_rate;
+ u64 max_rate, pct80_rate;
+ u32 clksel;
+
+ hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
+ if (!hwc)
+ return NULL;
+
+ if (cg->info.flags & CG_VER3)
+ hwc->reg = cg->regs + 0x70000 + 0x20 * idx;
+ else
+ hwc->reg = cg->regs + 0x20 * idx;
+
+ hwc->info = cg->info.cmux_groups[cg->info.cmux_to_group[idx]];
+
+ /*
+ * Find the rate for the default clksel, and treat it as the
+ * maximum rated core frequency. If this is an incorrect
+ * assumption, certain clock options (possibly including the
+ * default clksel) may be inappropriately excluded on certain
+ * chips.
+ */
+ clksel = (cg_in(cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
+ div = get_pll_div(cg, hwc, clksel);
+ if (!div) {
+ kfree(hwc);
+ return NULL;
+ }
+
+ max_rate = clk_get_rate(div->clk);
+ pct80_rate = max_rate * 8;
+ do_div(pct80_rate, 10);
+
+ plat_rate = clk_get_rate(cg->pll[PLATFORM_PLL].div[PLL_DIV1].clk);
+
+ if (cg->info.flags & CG_CMUX_GE_PLAT)
+ min_rate = plat_rate;
+ else
+ min_rate = plat_rate / 2;
+
+ return create_mux_common(cg, hwc, &cmux_ops, min_rate, max_rate,
+ pct80_rate, "cg-cmux%d", idx);
+}
+
+static struct clk * __init create_one_hwaccel(struct clockgen *cg, int idx)
+{
+ struct mux_hwclock *hwc;
+
+ hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
+ if (!hwc)
+ return NULL;
+
+ hwc->reg = cg->regs + 0x20 * idx + 0x10;
+ hwc->info = cg->info.hwaccel[idx];
+
+ return create_mux_common(cg, hwc, &hwaccel_ops, 0, ULONG_MAX, 0,
+ "cg-hwaccel%d", idx);
+}
+
+static void __init create_muxes(struct clockgen *cg)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cg->cmux); i++) {
+ if (cg->info.cmux_to_group[i] < 0)
+ break;
+ if (cg->info.cmux_to_group[i] >=
+ ARRAY_SIZE(cg->info.cmux_groups)) {
+ WARN_ON_ONCE(1);
+ continue;
+ }
+
+ cg->cmux[i] = create_one_cmux(cg, i);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(cg->hwaccel); i++) {
+ if (!cg->info.hwaccel[i])
+ continue;
+
+ cg->hwaccel[i] = create_one_hwaccel(cg, i);
+ }
+}
+
+static void __init _clockgen_init(struct device_node *np, bool legacy);
+
+/*
+ * Legacy nodes may get probed before the parent clockgen node.
+ * It is assumed that device trees with legacy nodes will not
+ * contain a "clocks" property -- otherwise the input clocks may
+ * not be initialized at this point.
+ */
+static void __init legacy_init_clockgen(struct device_node *np)
+{
+ if (!clockgen.node) {
+ struct device_node *parent_np;
+
+ parent_np = of_get_parent(np);
+ _clockgen_init(parent_np, true);
+ of_node_put(parent_np);
+ }
+}
+
+/* Legacy node */
+static void __init core_mux_init(struct device_node *np)
+{
+ struct clk *clk;
+ struct resource res;
+ int idx, rc;
+
+ legacy_init_clockgen(np);
+
+ if (of_address_to_resource(np, 0, &res))
+ return;
+
+ idx = (res.start & 0xf0) >> 5;
+ clk = clockgen.cmux[idx];
+
+ rc = of_clk_add_provider(np, of_clk_src_simple_get, clk);
+ if (rc) {
+ pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
+ __func__, np, rc);
+ return;
+ }
+}
+
+static struct clk __init
+*sysclk_from_fixed(struct device_node *node, const char *name)
+{
+ u32 rate;
+
+ if (of_property_read_u32(node, "clock-frequency", &rate))
+ return ERR_PTR(-ENODEV);
+
+ return clk_register_fixed_rate(NULL, name, NULL, 0, rate);
+}
+
+static struct clk __init *input_clock(const char *name, struct clk *clk)
+{
+ const char *input_name;
+
+ /* Register the input clock under the desired name. */
+ input_name = __clk_get_name(clk);
+ clk = clk_register_fixed_factor(NULL, name, input_name,
+ 0, 1, 1);
+ if (IS_ERR(clk))
+ pr_err("%s: Couldn't register %s: %ld\n", __func__, name,
+ PTR_ERR(clk));
+
+ return clk;
+}
+
+static struct clk __init *input_clock_by_name(const char *name,
+ const char *dtname)
+{
+ struct clk *clk;
+
+ clk = of_clk_get_by_name(clockgen.node, dtname);
+ if (IS_ERR(clk))
+ return clk;
+
+ return input_clock(name, clk);
+}
+
+static struct clk __init *input_clock_by_index(const char *name, int idx)
+{
+ struct clk *clk;
+
+ clk = of_clk_get(clockgen.node, 0);
+ if (IS_ERR(clk))
+ return clk;
+
+ return input_clock(name, clk);
+}
+
+static struct clk * __init create_sysclk(const char *name)
+{
+ struct device_node *sysclk;
+ struct clk *clk;
+
+ clk = sysclk_from_fixed(clockgen.node, name);
+ if (!IS_ERR(clk))
+ return clk;
+
+ clk = input_clock_by_name(name, "sysclk");
+ if (!IS_ERR(clk))
+ return clk;
+
+ clk = input_clock_by_index(name, 0);
+ if (!IS_ERR(clk))
+ return clk;
+
+ sysclk = of_get_child_by_name(clockgen.node, "sysclk");
+ if (sysclk) {
+ clk = sysclk_from_fixed(sysclk, name);
+ of_node_put(sysclk);
+ if (!IS_ERR(clk))
+ return clk;
+ }
+
+ pr_err("%s: No input sysclk\n", __func__);
+ return NULL;
+}
+
+static struct clk * __init create_coreclk(const char *name)
+{
+ struct clk *clk;
+
+ clk = input_clock_by_name(name, "coreclk");
+ if (!IS_ERR(clk))
+ return clk;
+
+ /*
+ * This indicates a mix of legacy nodes with the new coreclk
+ * mechanism, which should never happen. If this error occurs,
+ * don't use the wrong input clock just because coreclk isn't
+ * ready yet.
+ */
+ if (WARN_ON(PTR_ERR(clk) == -EPROBE_DEFER))
+ return clk;
+
+ return NULL;
+}
+
+/* Legacy node */
+static void __init sysclk_init(struct device_node *node)
+{
+ struct clk *clk;
+
+ legacy_init_clockgen(node);
+
+ clk = clockgen.sysclk;
+ if (clk)
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+
+#define PLL_KILL BIT(31)
+
+static void __init create_one_pll(struct clockgen *cg, int idx)
+{
+ u32 __iomem *reg;
+ u32 mult;
+ struct clockgen_pll *pll = &cg->pll[idx];
+ const char *input = "cg-sysclk";
+ int i;
+
+ if (!(cg->info.pll_mask & (1 << idx)))
+ return;
+
+ if (cg->coreclk && idx != PLATFORM_PLL) {
+ if (IS_ERR(cg->coreclk))
+ return;
+
+ input = "cg-coreclk";
+ }
+
+ if (cg->info.flags & CG_VER3) {
+ switch (idx) {
+ case PLATFORM_PLL:
+ reg = cg->regs + 0x60080;
+ break;
+ case CGA_PLL1:
+ reg = cg->regs + 0x80;
+ break;
+ case CGA_PLL2:
+ reg = cg->regs + 0xa0;
+ break;
+ case CGB_PLL1:
+ reg = cg->regs + 0x10080;
+ break;
+ case CGB_PLL2:
+ reg = cg->regs + 0x100a0;
+ break;
+ default:
+ WARN_ONCE(1, "index %d\n", idx);
+ return;
+ }
+ } else {
+ if (idx == PLATFORM_PLL)
+ reg = cg->regs + 0xc00;
+ else
+ reg = cg->regs + 0x800 + 0x20 * (idx - 1);
+ }
+
+ /* Get the multiple of PLL */
+ mult = cg_in(cg, reg);
+
+ /* Check if this PLL is disabled */
+ if (mult & PLL_KILL) {
+ pr_debug("%s(): pll %p disabled\n", __func__, reg);
+ return;
+ }
+
+ if ((cg->info.flags & CG_VER3) ||
+ ((cg->info.flags & CG_PLL_8BIT) && idx != PLATFORM_PLL))
+ mult = (mult & GENMASK(8, 1)) >> 1;
+ else
+ mult = (mult & GENMASK(6, 1)) >> 1;
+
+ for (i = 0; i < ARRAY_SIZE(pll->div); i++) {
+ struct clk *clk;
+ int ret;
+
+ /*
+ * For platform PLL, there are MAX_PLL_DIV divider clocks.
+ * For core PLL, there are 4 divider clocks at most.
+ */
+ if (idx != PLATFORM_PLL && i >= 4)
+ break;
+
+ snprintf(pll->div[i].name, sizeof(pll->div[i].name),
+ "cg-pll%d-div%d", idx, i + 1);
+
+ clk = clk_register_fixed_factor(NULL,
+ pll->div[i].name, input, 0, mult, i + 1);
+ if (IS_ERR(clk)) {
+ pr_err("%s: %s: register failed %ld\n",
+ __func__, pll->div[i].name, PTR_ERR(clk));
+ continue;
+ }
+
+ pll->div[i].clk = clk;
+ ret = clk_register_clkdev(clk, pll->div[i].name, NULL);
+ if (ret != 0)
+ pr_err("%s: %s: register to lookup table failed %d\n",
+ __func__, pll->div[i].name, ret);
+
+ }
+}
+
+static void __init create_plls(struct clockgen *cg)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cg->pll); i++)
+ create_one_pll(cg, i);
+}
+
+static void __init legacy_pll_init(struct device_node *np, int idx)
+{
+ struct clockgen_pll *pll;
+ struct clk_onecell_data *onecell_data;
+ struct clk **subclks;
+ int count, rc;
+
+ legacy_init_clockgen(np);
+
+ pll = &clockgen.pll[idx];
+ count = of_property_count_strings(np, "clock-output-names");
+
+ BUILD_BUG_ON(ARRAY_SIZE(pll->div) < 4);
+ subclks = kcalloc(4, sizeof(struct clk *), GFP_KERNEL);
+ if (!subclks)
+ return;
+
+ onecell_data = kmalloc(sizeof(*onecell_data), GFP_KERNEL);
+ if (!onecell_data)
+ goto err_clks;
+
+ if (count <= 3) {
+ subclks[0] = pll->div[0].clk;
+ subclks[1] = pll->div[1].clk;
+ subclks[2] = pll->div[3].clk;
+ } else {
+ subclks[0] = pll->div[0].clk;
+ subclks[1] = pll->div[1].clk;
+ subclks[2] = pll->div[2].clk;
+ subclks[3] = pll->div[3].clk;
+ }
+
+ onecell_data->clks = subclks;
+ onecell_data->clk_num = count;
+
+ rc = of_clk_add_provider(np, of_clk_src_onecell_get, onecell_data);
+ if (rc) {
+ pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
+ __func__, np, rc);
+ goto err_cell;
+ }
+
+ return;
+err_cell:
+ kfree(onecell_data);
+err_clks:
+ kfree(subclks);
+}
+
+/* Legacy node */
+static void __init pltfrm_pll_init(struct device_node *np)
+{
+ legacy_pll_init(np, PLATFORM_PLL);
+}
+
+/* Legacy node */
+static void __init core_pll_init(struct device_node *np)
+{
+ struct resource res;
+ int idx;
+
+ if (of_address_to_resource(np, 0, &res))
+ return;
+
+ if ((res.start & 0xfff) == 0xc00) {
+ /*
+ * ls1021a devtree labels the platform PLL
+ * with the core PLL compatible
+ */
+ pltfrm_pll_init(np);
+ } else {
+ idx = (res.start & 0xf0) >> 5;
+ legacy_pll_init(np, CGA_PLL1 + idx);
+ }
+}
+
+static struct clk *clockgen_clk_get(struct of_phandle_args *clkspec, void *data)
+{
+ struct clockgen *cg = data;
+ struct clk *clk;
+ struct clockgen_pll *pll;
+ u32 type, idx;
+
+ if (clkspec->args_count < 2) {
+ pr_err("%s: insufficient phandle args\n", __func__);
+ return ERR_PTR(-EINVAL);
+ }
+
+ type = clkspec->args[0];
+ idx = clkspec->args[1];
+
+ switch (type) {
+ case QORIQ_CLK_SYSCLK:
+ if (idx != 0)
+ goto bad_args;
+ clk = cg->sysclk;
+ break;
+ case QORIQ_CLK_CMUX:
+ if (idx >= ARRAY_SIZE(cg->cmux))
+ goto bad_args;
+ clk = cg->cmux[idx];
+ break;
+ case QORIQ_CLK_HWACCEL:
+ if (idx >= ARRAY_SIZE(cg->hwaccel))
+ goto bad_args;
+ clk = cg->hwaccel[idx];
+ break;
+ case QORIQ_CLK_FMAN:
+ if (idx >= ARRAY_SIZE(cg->fman))
+ goto bad_args;
+ clk = cg->fman[idx];
+ break;
+ case QORIQ_CLK_PLATFORM_PLL:
+ pll = &cg->pll[PLATFORM_PLL];
+ if (idx >= ARRAY_SIZE(pll->div))
+ goto bad_args;
+ clk = pll->div[idx].clk;
+ break;
+ case QORIQ_CLK_CORECLK:
+ if (idx != 0)
+ goto bad_args;
+ clk = cg->coreclk;
+ if (IS_ERR(clk))
+ clk = NULL;
+ break;
+ default:
+ goto bad_args;
+ }
+
+ if (!clk)
+ return ERR_PTR(-ENOENT);
+ return clk;
+
+bad_args:
+ pr_err("%s: Bad phandle args %u %u\n", __func__, type, idx);
+ return ERR_PTR(-EINVAL);
+}
+
+#ifdef CONFIG_PPC
+#include <asm/mpc85xx.h>
+
+static const u32 a4510_svrs[] __initconst = {
+ (SVR_P2040 << 8) | 0x10, /* P2040 1.0 */
+ (SVR_P2040 << 8) | 0x11, /* P2040 1.1 */
+ (SVR_P2041 << 8) | 0x10, /* P2041 1.0 */
+ (SVR_P2041 << 8) | 0x11, /* P2041 1.1 */
+ (SVR_P3041 << 8) | 0x10, /* P3041 1.0 */
+ (SVR_P3041 << 8) | 0x11, /* P3041 1.1 */
+ (SVR_P4040 << 8) | 0x20, /* P4040 2.0 */
+ (SVR_P4080 << 8) | 0x20, /* P4080 2.0 */
+ (SVR_P5010 << 8) | 0x10, /* P5010 1.0 */
+ (SVR_P5010 << 8) | 0x20, /* P5010 2.0 */
+ (SVR_P5020 << 8) | 0x10, /* P5020 1.0 */
+ (SVR_P5021 << 8) | 0x10, /* P5021 1.0 */
+ (SVR_P5040 << 8) | 0x10, /* P5040 1.0 */
+};
+
+#define SVR_SECURITY 0x80000 /* The Security (E) bit */
+
+static bool __init has_erratum_a4510(void)
+{
+ u32 svr = mfspr(SPRN_SVR);
+ int i;
+
+ svr &= ~SVR_SECURITY;
+
+ for (i = 0; i < ARRAY_SIZE(a4510_svrs); i++) {
+ if (svr == a4510_svrs[i])
+ return true;
+ }
+
+ return false;
+}
+#else
+static bool __init has_erratum_a4510(void)
+{
+ return false;
+}
+#endif
+
+static void __init _clockgen_init(struct device_node *np, bool legacy)
+{
+ int i, ret;
+ bool is_old_ls1021a = false;
+
+ /* May have already been called by a legacy probe */
+ if (clockgen.node)
+ return;
+
+ clockgen.node = np;
+ clockgen.regs = of_iomap(np, 0);
+ if (!clockgen.regs &&
+ of_device_is_compatible(of_root, "fsl,ls1021a")) {
+ /* Compatibility hack for old, broken device trees */
+ clockgen.regs = ioremap(0x1ee1000, 0x1000);
+ is_old_ls1021a = true;
+ }
+ if (!clockgen.regs) {
+ pr_err("%s(): %pOFn: of_iomap() failed\n", __func__, np);
+ return;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(chipinfo); i++) {
+ if (of_device_is_compatible(np, chipinfo[i].compat))
+ break;
+ if (is_old_ls1021a &&
+ !strcmp(chipinfo[i].compat, "fsl,ls1021a-clockgen"))
+ break;
+ }
+
+ if (i == ARRAY_SIZE(chipinfo)) {
+ pr_err("%s: unknown clockgen node %pOF\n", __func__, np);
+ goto err;
+ }
+ clockgen.info = chipinfo[i];
+
+ if (clockgen.info.guts_compat) {
+ struct device_node *guts;
+
+ guts = of_find_compatible_node(NULL, NULL,
+ clockgen.info.guts_compat);
+ if (guts) {
+ clockgen.guts = of_iomap(guts, 0);
+ if (!clockgen.guts) {
+ pr_err("%s: Couldn't map %pOF regs\n", __func__,
+ guts);
+ }
+ of_node_put(guts);
+ }
+
+ }
+
+ if (has_erratum_a4510())
+ clockgen.info.flags |= CG_CMUX_GE_PLAT;
+
+ clockgen.sysclk = create_sysclk("cg-sysclk");
+ clockgen.coreclk = create_coreclk("cg-coreclk");
+ create_plls(&clockgen);
+ create_muxes(&clockgen);
+
+ if (clockgen.info.init_periph)
+ clockgen.info.init_periph(&clockgen);
+
+ ret = of_clk_add_provider(np, clockgen_clk_get, &clockgen);
+ if (ret) {
+ pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
+ __func__, np, ret);
+ }
+
+ /* Don't create cpufreq device for legacy clockgen blocks */
+ add_cpufreq_dev = !legacy;
+
+ return;
+err:
+ iounmap(clockgen.regs);
+ clockgen.regs = NULL;
+}
+
+static void __init clockgen_init(struct device_node *np)
+{
+ _clockgen_init(np, false);
+}
+
+static int __init clockgen_cpufreq_init(void)
+{
+ struct platform_device *pdev;
+
+ if (add_cpufreq_dev) {
+ pdev = platform_device_register_simple("qoriq-cpufreq", -1,
+ NULL, 0);
+ if (IS_ERR(pdev))
+ pr_err("Couldn't register qoriq-cpufreq err=%ld\n",
+ PTR_ERR(pdev));
+ }
+ return 0;
+}
+device_initcall(clockgen_cpufreq_init);
+
+CLK_OF_DECLARE(qoriq_clockgen_1, "fsl,qoriq-clockgen-1.0", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_2, "fsl,qoriq-clockgen-2.0", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_b4420, "fsl,b4420-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_b4860, "fsl,b4860-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_ls1012a, "fsl,ls1012a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_ls1021a, "fsl,ls1021a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_ls1028a, "fsl,ls1028a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_ls1043a, "fsl,ls1043a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_ls1046a, "fsl,ls1046a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_ls1088a, "fsl,ls1088a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_ls2080a, "fsl,ls2080a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_lx2160a, "fsl,lx2160a-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_p2041, "fsl,p2041-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_p3041, "fsl,p3041-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_p4080, "fsl,p4080-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_p5020, "fsl,p5020-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_p5040, "fsl,p5040-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_t1023, "fsl,t1023-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_t1040, "fsl,t1040-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_t2080, "fsl,t2080-clockgen", clockgen_init);
+CLK_OF_DECLARE(qoriq_clockgen_t4240, "fsl,t4240-clockgen", clockgen_init);
+
+/* Legacy nodes */
+CLK_OF_DECLARE(qoriq_sysclk_1, "fsl,qoriq-sysclk-1.0", sysclk_init);
+CLK_OF_DECLARE(qoriq_sysclk_2, "fsl,qoriq-sysclk-2.0", sysclk_init);
+CLK_OF_DECLARE(qoriq_core_pll_1, "fsl,qoriq-core-pll-1.0", core_pll_init);
+CLK_OF_DECLARE(qoriq_core_pll_2, "fsl,qoriq-core-pll-2.0", core_pll_init);
+CLK_OF_DECLARE(qoriq_core_mux_1, "fsl,qoriq-core-mux-1.0", core_mux_init);
+CLK_OF_DECLARE(qoriq_core_mux_2, "fsl,qoriq-core-mux-2.0", core_mux_init);
+CLK_OF_DECLARE(qoriq_pltfrm_pll_1, "fsl,qoriq-platform-pll-1.0", pltfrm_pll_init);
+CLK_OF_DECLARE(qoriq_pltfrm_pll_2, "fsl,qoriq-platform-pll-2.0", pltfrm_pll_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 21:53:55 +0000