[PATCH v5 2/4] clk: zx: add clock support to zx296702
Jun Nie
jun.nie at linaro.org
Thu May 28 19:41:53 PDT 2015
2015-05-29 10:39 GMT+08:00 Jun Nie <jun.nie at linaro.org>:
> It adds a clock driver for zx296702 SoC to register the clock tree to
> Common Clock Framework. All the clocks of bus topology and some the
> peripheral clocks are ready with this commit. Some missing leaf clocks
> for peripherals will be added later when needed.
Hi Stephen,
Could you help review updated patch? All your comments are adopted. Thanks!
Jun
>
> Signed-off-by: Jun Nie <jun.nie at linaro.org>
> ---
> drivers/clk/Makefile | 1 +
> drivers/clk/zte/Makefile | 2 +
> drivers/clk/zte/clk-pll.c | 184 ++++++++++++
> drivers/clk/zte/clk-zx296702.c | 657 +++++++++++++++++++++++++++++++++++++++++
> drivers/clk/zte/clk.h | 32 ++
> 5 files changed, 876 insertions(+)
> create mode 100644 drivers/clk/zte/Makefile
> create mode 100644 drivers/clk/zte/clk-pll.c
> create mode 100644 drivers/clk/zte/clk-zx296702.c
> create mode 100644 drivers/clk/zte/clk.h
>
> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
> index 3d00c25..f4c68be 100644
> --- a/drivers/clk/Makefile
> +++ b/drivers/clk/Makefile
> @@ -72,4 +72,5 @@ obj-$(CONFIG_ARCH_OMAP2PLUS) += ti/
> obj-$(CONFIG_ARCH_U8500) += ux500/
> obj-$(CONFIG_COMMON_CLK_VERSATILE) += versatile/
> obj-$(CONFIG_X86) += x86/
> +obj-$(CONFIG_ARCH_ZX) += zte/
> obj-$(CONFIG_ARCH_ZYNQ) += zynq/
> diff --git a/drivers/clk/zte/Makefile b/drivers/clk/zte/Makefile
> new file mode 100644
> index 0000000..95b707c
> --- /dev/null
> +++ b/drivers/clk/zte/Makefile
> @@ -0,0 +1,2 @@
> +obj-y := clk-pll.o
> +obj-$(CONFIG_SOC_ZX296702) += clk-zx296702.o
> diff --git a/drivers/clk/zte/clk-pll.c b/drivers/clk/zte/clk-pll.c
> new file mode 100644
> index 0000000..422ef25
> --- /dev/null
> +++ b/drivers/clk/zte/clk-pll.c
> @@ -0,0 +1,184 @@
> +/*
> + * Copyright 2014 Linaro Ltd.
> + * Copyright (C) 2014 ZTE Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/err.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +
> +#include "clk.h"
> +
> +#define to_clk_zx_pll(_hw) container_of(_hw, struct clk_zx_pll, hw)
> +
> +#define CFG0_CFG1_OFFSET 4
> +#define LOCK_FLAG BIT(30)
> +#define POWER_DOWN BIT(31)
> +
> +static int rate_to_idx(struct clk_zx_pll *zx_pll, unsigned long rate)
> +{
> + const struct zx_pll_config *config = zx_pll->lookup_table;
> + int i;
> +
> + for (i = 0; i < zx_pll->count; i++) {
> + if (config[i].rate > rate)
> + return i > 0 ? i - 1 : 0;
> +
> + if (config[i].rate == rate)
> + return i;
> + }
> +
> + return i - 1;
> +}
> +
> +static int hw_to_idx(struct clk_zx_pll *zx_pll)
> +{
> + const struct zx_pll_config *config = zx_pll->lookup_table;
> + u32 hw_cfg0, hw_cfg1;
> + int i;
> +
> + hw_cfg0 = readl_relaxed(zx_pll->reg_base);
> + hw_cfg1 = readl_relaxed(zx_pll->reg_base + CFG0_CFG1_OFFSET);
> +
> + /* For matching the value in lookup table */
> + hw_cfg0 &= ~LOCK_FLAG;
> + hw_cfg0 |= POWER_DOWN;
> +
> + for (i = 0; i < zx_pll->count; i++) {
> + if (hw_cfg0 == config[i].cfg0 && hw_cfg1 == config[i].cfg1)
> + return i;
> + }
> +
> + return -1;
> +}
> +
> +static unsigned long zx_pll_recalc_rate(struct clk_hw *hw,
> + unsigned long parent_rate)
> +{
> + struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
> + int idx;
> +
> + idx = hw_to_idx(zx_pll);
> + if (unlikely(idx == -1))
> + return 0;
> +
> + return zx_pll->lookup_table[idx].rate;
> +}
> +
> +static long zx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> + unsigned long *prate)
> +{
> + struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
> + int idx;
> +
> + idx = rate_to_idx(zx_pll, rate);
> +
> + return zx_pll->lookup_table[idx].rate;
> +}
> +
> +static int zx_pll_set_rate(struct clk_hw *hw, unsigned long rate,
> + unsigned long parent_rate)
> +{
> + /* Assume current cpu is not running on current PLL */
> + struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
> + const struct zx_pll_config *config;
> + int idx;
> +
> + idx = rate_to_idx(zx_pll, rate);
> + config = &zx_pll->lookup_table[idx];
> +
> + writel_relaxed(config->cfg0, zx_pll->reg_base);
> + writel_relaxed(config->cfg1, zx_pll->reg_base + CFG0_CFG1_OFFSET);
> +
> + return 0;
> +}
> +
> +static int zx_pll_enable(struct clk_hw *hw)
> +{
> + struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
> + unsigned long timeout = jiffies + msecs_to_jiffies(500);
> + u32 reg;
> +
> + reg = readl_relaxed(zx_pll->reg_base);
> + writel_relaxed(reg & ~POWER_DOWN, zx_pll->reg_base);
> +
> + return readl_relaxed_poll_timeout(zx_pll->reg_base, reg,
> + reg & LOCK_FLAG, 0, 100);
> +
> + while (!(readl_relaxed(zx_pll->reg_base) & LOCK_FLAG)) {
> + if (time_after(jiffies, timeout)) {
> + pr_err("clk %s enable timeout\n",
> + __clk_get_name(hw->clk));
> + break;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static void zx_pll_disable(struct clk_hw *hw)
> +{
> + struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
> + u32 reg;
> +
> + reg = readl_relaxed(zx_pll->reg_base);
> + writel_relaxed(reg | POWER_DOWN, zx_pll->reg_base);
> +}
> +
> +static int zx_pll_is_enabled(struct clk_hw *hw)
> +{
> + struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
> + u32 reg;
> +
> + reg = readl_relaxed(zx_pll->reg_base);
> +
> + return !(reg & POWER_DOWN);
> +}
> +
> +static const struct clk_ops zx_pll_ops = {
> + .recalc_rate = zx_pll_recalc_rate,
> + .round_rate = zx_pll_round_rate,
> + .set_rate = zx_pll_set_rate,
> + .enable = zx_pll_enable,
> + .disable = zx_pll_disable,
> + .is_enabled = zx_pll_is_enabled,
> +};
> +
> +struct clk *clk_register_zx_pll(const char *name, const char *parent_name,
> + unsigned long flags, void __iomem *reg_base,
> + const struct zx_pll_config *lookup_table, int count, spinlock_t *lock)
> +{
> + struct clk_zx_pll *zx_pll;
> + struct clk *clk;
> + struct clk_init_data init;
> +
> + zx_pll = kzalloc(sizeof(*zx_pll), GFP_KERNEL);
> + if (!zx_pll)
> + return ERR_PTR(-ENOMEM);
> +
> + init.name = name;
> + init.ops = &zx_pll_ops;
> + init.flags = flags;
> + init.parent_names = parent_name ? &parent_name : NULL;
> + init.num_parents = parent_name ? 1 : 0;
> +
> + zx_pll->reg_base = reg_base;
> + zx_pll->lookup_table = lookup_table;
> + zx_pll->count = count;
> + zx_pll->lock = lock;
> + zx_pll->hw.init = &init;
> +
> + clk = clk_register(NULL, &zx_pll->hw);
> + if (IS_ERR(clk))
> + kfree(zx_pll);
> +
> + return clk;
> +}
> diff --git a/drivers/clk/zte/clk-zx296702.c b/drivers/clk/zte/clk-zx296702.c
> new file mode 100644
> index 0000000..4a11cff
> --- /dev/null
> +++ b/drivers/clk/zte/clk-zx296702.c
> @@ -0,0 +1,657 @@
> +/*
> + * Copyright 2014 Linaro Ltd.
> + * Copyright (C) 2014 ZTE Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/of_address.h>
> +#include <dt-bindings/clock/zx296702-clock.h>
> +#include "clk.h"
> +
> +static DEFINE_SPINLOCK(reg_lock);
> +
> +static void __iomem *topcrm_base;
> +static void __iomem *lsp0crpm_base;
> +static void __iomem *lsp1crpm_base;
> +
> +static struct clk *topclk[ZX296702_TOPCLK_END];
> +static struct clk *lsp0clk[ZX296702_LSP0CLK_END];
> +static struct clk *lsp1clk[ZX296702_LSP1CLK_END];
> +
> +static struct clk_onecell_data topclk_data;
> +static struct clk_onecell_data lsp0clk_data;
> +static struct clk_onecell_data lsp1clk_data;
> +
> +#define CLK_MUX (topcrm_base + 0x04)
> +#define CLK_DIV (topcrm_base + 0x08)
> +#define CLK_EN0 (topcrm_base + 0x0c)
> +#define CLK_EN1 (topcrm_base + 0x10)
> +#define VOU_LOCAL_CLKEN (topcrm_base + 0x68)
> +#define VOU_LOCAL_CLKSEL (topcrm_base + 0x70)
> +#define VOU_LOCAL_DIV2_SET (topcrm_base + 0x74)
> +#define CLK_MUX1 (topcrm_base + 0x8c)
> +
> +#define CLK_SDMMC1 (lsp0crpm_base + 0x0c)
> +
> +#define CLK_UART0 (lsp1crpm_base + 0x20)
> +#define CLK_UART1 (lsp1crpm_base + 0x24)
> +#define CLK_SDMMC0 (lsp1crpm_base + 0x2c)
> +
> +static const struct zx_pll_config pll_a9_config[] = {
> + { .rate = 700000000, .cfg0 = 0x800405d1, .cfg1 = 0x04555555 },
> + { .rate = 800000000, .cfg0 = 0x80040691, .cfg1 = 0x04aaaaaa },
> + { .rate = 900000000, .cfg0 = 0x80040791, .cfg1 = 0x04000000 },
> + { .rate = 1000000000, .cfg0 = 0x80040851, .cfg1 = 0x04555555 },
> + { .rate = 1100000000, .cfg0 = 0x80040911, .cfg1 = 0x04aaaaaa },
> + { .rate = 1200000000, .cfg0 = 0x80040a11, .cfg1 = 0x04000000 },
> +};
> +
> +static const struct clk_div_table main_hlk_div[] = {
> + { .val = 1, .div = 2, },
> + { .val = 3, .div = 4, },
> + { /* sentinel */ }
> +};
> +
> +static const struct clk_div_table a9_as1_aclk_divider[] = {
> + { .val = 0, .div = 1, },
> + { .val = 1, .div = 2, },
> + { .val = 3, .div = 4, },
> + { /* sentinel */ }
> +};
> +
> +static const struct clk_div_table sec_wclk_divider[] = {
> + { .val = 0, .div = 1, },
> + { .val = 1, .div = 2, },
> + { .val = 3, .div = 4, },
> + { .val = 5, .div = 6, },
> + { .val = 7, .div = 8, },
> + { /* sentinel */ }
> +};
> +
> +static const char *matrix_aclk_sel[] = {
> + "pll_mm0_198M",
> + "osc",
> + "clk_148M5",
> + "pll_lsp_104M",
> +};
> +
> +static const char *a9_wclk_sel[] = {
> + "pll_a9",
> + "osc",
> + "clk_500",
> + "clk_250",
> +};
> +
> +static const char *a9_as1_aclk_sel[] = {
> + "clk_250",
> + "osc",
> + "pll_mm0_396M",
> + "pll_mac_333M",
> +};
> +
> +static const char *a9_trace_clkin_sel[] = {
> + "clk_74M25",
> + "pll_mm1_108M",
> + "clk_125",
> + "clk_148M5",
> +};
> +
> +static const char *decppu_aclk_sel[] = {
> + "clk_250",
> + "pll_mm0_198M",
> + "pll_lsp_104M",
> + "pll_audio_294M912",
> +};
> +
> +static const char *vou_main_wclk_sel[] = {
> + "clk_148M5",
> + "clk_74M25",
> + "clk_27",
> + "pll_mm1_54M",
> +};
> +
> +static const char *vou_scaler_wclk_sel[] = {
> + "clk_250",
> + "pll_mac_333M",
> + "pll_audio_294M912",
> + "pll_mm0_198M",
> +};
> +
> +static const char *r2d_wclk_sel[] = {
> + "pll_audio_294M912",
> + "pll_mac_333M",
> + "pll_a9_350M",
> + "pll_mm0_396M",
> +};
> +
> +static const char *ddr_wclk_sel[] = {
> + "pll_mac_333M",
> + "pll_ddr_266M",
> + "pll_audio_294M912",
> + "pll_mm0_198M",
> +};
> +
> +static const char *nand_wclk_sel[] = {
> + "pll_lsp_104M",
> + "osc",
> +};
> +
> +static const char *lsp_26_wclk_sel[] = {
> + "pll_lsp_26M",
> + "osc",
> +};
> +
> +static const char *vl0_sel[] = {
> + "vou_main_channel_div",
> + "vou_aux_channel_div",
> +};
> +
> +static const char *hdmi_sel[] = {
> + "vou_main_channel_wclk",
> + "vou_aux_channel_wclk",
> +};
> +
> +static const char *sdmmc0_wclk_sel[] = {
> + "lsp1_104M_wclk",
> + "lsp1_26M_wclk",
> +};
> +
> +static const char *sdmmc1_wclk_sel[] = {
> + "lsp0_104M_wclk",
> + "lsp0_26M_wclk",
> +};
> +
> +static const char *uart_wclk_sel[] = {
> + "lsp1_104M_wclk",
> + "lsp1_26M_wclk",
> +};
> +
> +static inline struct clk *zx_divtbl(const char *name, const char *parent,
> + void __iomem *reg, u8 shift, u8 width,
> + const struct clk_div_table *table)
> +{
> + return clk_register_divider_table(NULL, name, parent, 0, reg, shift,
> + width, 0, table, ®_lock);
> +}
> +
> +static inline struct clk *zx_div(const char *name, const char *parent,
> + void __iomem *reg, u8 shift, u8 width)
> +{
> + return clk_register_divider(NULL, name, parent, 0,
> + reg, shift, width, 0, ®_lock);
> +}
> +
> +static inline struct clk *zx_mux(const char *name, const char **parents,
> + int num_parents, void __iomem *reg, u8 shift, u8 width)
> +{
> + return clk_register_mux(NULL, name, parents, num_parents,
> + 0, reg, shift, width, 0, ®_lock);
> +}
> +
> +static inline struct clk *zx_gate(const char *name, const char *parent,
> + void __iomem *reg, u8 shift)
> +{
> + return clk_register_gate(NULL, name, parent, CLK_IGNORE_UNUSED,
> + reg, shift, 0, ®_lock);
> +}
> +
> +static void __init zx296702_top_clocks_init(struct device_node *np)
> +{
> + struct clk **clk = topclk;
> + int i;
> +
> + topcrm_base = of_iomap(np, 0);
> + WARN_ON(!topcrm_base);
> +
> + clk[ZX296702_OSC] =
> + clk_register_fixed_rate(NULL, "osc", NULL, CLK_IS_ROOT,
> + 30000000);
> + clk[ZX296702_PLL_A9] =
> + clk_register_zx_pll("pll_a9", "osc", 0, topcrm_base
> + + 0x01c, pll_a9_config,
> + ARRAY_SIZE(pll_a9_config), ®_lock);
> +
> + /* TODO: pll_a9_350M look like changeble follow a9 pll */
> + clk[ZX296702_PLL_A9_350M] =
> + clk_register_fixed_rate(NULL, "pll_a9_350M", "osc", 0,
> + 350000000);
> + clk[ZX296702_PLL_MAC_1000M] =
> + clk_register_fixed_rate(NULL, "pll_mac_1000M", "osc", 0,
> + 1000000000);
> + clk[ZX296702_PLL_MAC_333M] =
> + clk_register_fixed_rate(NULL, "pll_mac_333M", "osc", 0,
> + 333000000);
> + clk[ZX296702_PLL_MM0_1188M] =
> + clk_register_fixed_rate(NULL, "pll_mm0_1188M", "osc", 0,
> + 1188000000);
> + clk[ZX296702_PLL_MM0_396M] =
> + clk_register_fixed_rate(NULL, "pll_mm0_396M", "osc", 0,
> + 396000000);
> + clk[ZX296702_PLL_MM0_198M] =
> + clk_register_fixed_rate(NULL, "pll_mm0_198M", "osc", 0,
> + 198000000);
> + clk[ZX296702_PLL_MM1_108M] =
> + clk_register_fixed_rate(NULL, "pll_mm1_108M", "osc", 0,
> + 108000000);
> + clk[ZX296702_PLL_MM1_72M] =
> + clk_register_fixed_rate(NULL, "pll_mm1_72M", "osc", 0,
> + 72000000);
> + clk[ZX296702_PLL_MM1_54M] =
> + clk_register_fixed_rate(NULL, "pll_mm1_54M", "osc", 0,
> + 54000000);
> + clk[ZX296702_PLL_LSP_104M] =
> + clk_register_fixed_rate(NULL, "pll_lsp_104M", "osc", 0,
> + 104000000);
> + clk[ZX296702_PLL_LSP_26M] =
> + clk_register_fixed_rate(NULL, "pll_lsp_26M", "osc", 0,
> + 26000000);
> + clk[ZX296702_PLL_DDR_266M] =
> + clk_register_fixed_rate(NULL, "pll_ddr_266M", "osc", 0,
> + 266000000);
> + clk[ZX296702_PLL_AUDIO_294M912] =
> + clk_register_fixed_rate(NULL, "pll_audio_294M912", "osc", 0,
> + 294912000);
> +
> + /* bus clock */
> + clk[ZX296702_MATRIX_ACLK] =
> + zx_mux("matrix_aclk", matrix_aclk_sel,
> + ARRAY_SIZE(matrix_aclk_sel), CLK_MUX, 2, 2);
> + clk[ZX296702_MAIN_HCLK] =
> + zx_divtbl("main_hclk", "matrix_aclk", CLK_DIV, 0, 2,
> + main_hlk_div);
> + clk[ZX296702_MAIN_PCLK] =
> + zx_divtbl("main_pclk", "matrix_aclk", CLK_DIV, 2, 2,
> + main_hlk_div);
> +
> + /* cpu clock */
> + clk[ZX296702_CLK_500] =
> + clk_register_fixed_factor(NULL, "clk_500", "pll_mac_1000M", 0,
> + 1, 2);
> + clk[ZX296702_CLK_250] =
> + clk_register_fixed_factor(NULL, "clk_250", "pll_mac_1000M", 0,
> + 1, 4);
> + clk[ZX296702_CLK_125] =
> + clk_register_fixed_factor(NULL, "clk_125", "clk_250", 0, 1, 2);
> + clk[ZX296702_CLK_148M5] =
> + clk_register_fixed_factor(NULL, "clk_148M5", "pll_mm0_1188M", 0,
> + 1, 8);
> + clk[ZX296702_CLK_74M25] =
> + clk_register_fixed_factor(NULL, "clk_74M25", "pll_mm0_1188M", 0,
> + 1, 16);
> + clk[ZX296702_A9_WCLK] =
> + zx_mux("a9_wclk", a9_wclk_sel, ARRAY_SIZE(a9_wclk_sel), CLK_MUX,
> + 0, 2);
> + clk[ZX296702_A9_AS1_ACLK_MUX] =
> + zx_mux("a9_as1_aclk_mux", a9_as1_aclk_sel,
> + ARRAY_SIZE(a9_as1_aclk_sel), CLK_MUX, 4, 2);
> + clk[ZX296702_A9_TRACE_CLKIN_MUX] =
> + zx_mux("a9_trace_clkin_mux", a9_trace_clkin_sel,
> + ARRAY_SIZE(a9_trace_clkin_sel), CLK_MUX1, 0, 2);
> + clk[ZX296702_A9_AS1_ACLK_DIV] =
> + zx_divtbl("a9_as1_aclk_div", "a9_as1_aclk_mux", CLK_DIV, 4, 2,
> + a9_as1_aclk_divider);
> +
> + /* multi-media clock */
> + clk[ZX296702_CLK_2] =
> + clk_register_fixed_factor(NULL, "clk_2", "pll_mm1_72M", 0,
> + 1, 36);
> + clk[ZX296702_CLK_27] =
> + clk_register_fixed_factor(NULL, "clk_27", "pll_mm1_54M", 0,
> + 1, 2);
> + clk[ZX296702_DECPPU_ACLK_MUX] =
> + zx_mux("decppu_aclk_mux", decppu_aclk_sel,
> + ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 6, 2);
> + clk[ZX296702_PPU_ACLK_MUX] =
> + zx_mux("ppu_aclk_mux", decppu_aclk_sel,
> + ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 8, 2);
> + clk[ZX296702_MALI400_ACLK_MUX] =
> + zx_mux("mali400_aclk_mux", decppu_aclk_sel,
> + ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 12, 2);
> + clk[ZX296702_VOU_ACLK_MUX] =
> + zx_mux("vou_aclk_mux", decppu_aclk_sel,
> + ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 10, 2);
> + clk[ZX296702_VOU_MAIN_WCLK_MUX] =
> + zx_mux("vou_main_wclk_mux", vou_main_wclk_sel,
> + ARRAY_SIZE(vou_main_wclk_sel), CLK_MUX, 14, 2);
> + clk[ZX296702_VOU_AUX_WCLK_MUX] =
> + zx_mux("vou_aux_wclk_mux", vou_main_wclk_sel,
> + ARRAY_SIZE(vou_main_wclk_sel), CLK_MUX, 16, 2);
> + clk[ZX296702_VOU_SCALER_WCLK_MUX] =
> + zx_mux("vou_scaler_wclk_mux", vou_scaler_wclk_sel,
> + ARRAY_SIZE(vou_scaler_wclk_sel), CLK_MUX,
> + 18, 2);
> + clk[ZX296702_R2D_ACLK_MUX] =
> + zx_mux("r2d_aclk_mux", decppu_aclk_sel,
> + ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 20, 2);
> + clk[ZX296702_R2D_WCLK_MUX] =
> + zx_mux("r2d_wclk_mux", r2d_wclk_sel,
> + ARRAY_SIZE(r2d_wclk_sel), CLK_MUX, 22, 2);
> +
> + /* other clock */
> + clk[ZX296702_CLK_50] =
> + clk_register_fixed_factor(NULL, "clk_50", "pll_mac_1000M",
> + 0, 1, 20);
> + clk[ZX296702_CLK_25] =
> + clk_register_fixed_factor(NULL, "clk_25", "pll_mac_1000M",
> + 0, 1, 40);
> + clk[ZX296702_CLK_12] =
> + clk_register_fixed_factor(NULL, "clk_12", "pll_mm1_72M",
> + 0, 1, 6);
> + clk[ZX296702_CLK_16M384] =
> + clk_register_fixed_factor(NULL, "clk_16M384",
> + "pll_audio_294M912", 0, 1, 18);
> + clk[ZX296702_CLK_32K768] =
> + clk_register_fixed_factor(NULL, "clk_32K768", "clk_16M384",
> + 0, 1, 500);
> + clk[ZX296702_SEC_WCLK_DIV] =
> + zx_divtbl("sec_wclk_div", "pll_lsp_104M", CLK_DIV, 6, 3,
> + sec_wclk_divider);
> + clk[ZX296702_DDR_WCLK_MUX] =
> + zx_mux("ddr_wclk_mux", ddr_wclk_sel,
> + ARRAY_SIZE(ddr_wclk_sel), CLK_MUX, 24, 2);
> + clk[ZX296702_NAND_WCLK_MUX] =
> + zx_mux("nand_wclk_mux", nand_wclk_sel,
> + ARRAY_SIZE(nand_wclk_sel), CLK_MUX, 24, 2);
> + clk[ZX296702_LSP_26_WCLK_MUX] =
> + zx_mux("lsp_26_wclk_mux", lsp_26_wclk_sel,
> + ARRAY_SIZE(lsp_26_wclk_sel), CLK_MUX, 27, 1);
> +
> + /* gates */
> + clk[ZX296702_A9_AS0_ACLK] =
> + zx_gate("a9_as0_aclk", "matrix_aclk", CLK_EN0, 0);
> + clk[ZX296702_A9_AS1_ACLK] =
> + zx_gate("a9_as1_aclk", "a9_as1_aclk_div", CLK_EN0, 1);
> + clk[ZX296702_A9_TRACE_CLKIN] =
> + zx_gate("a9_trace_clkin", "a9_trace_clkin_mux", CLK_EN0, 2);
> + clk[ZX296702_DECPPU_AXI_M_ACLK] =
> + zx_gate("decppu_axi_m_aclk", "decppu_aclk_mux", CLK_EN0, 3);
> + clk[ZX296702_DECPPU_AHB_S_HCLK] =
> + zx_gate("decppu_ahb_s_hclk", "main_hclk", CLK_EN0, 4);
> + clk[ZX296702_PPU_AXI_M_ACLK] =
> + zx_gate("ppu_axi_m_aclk", "ppu_aclk_mux", CLK_EN0, 5);
> + clk[ZX296702_PPU_AHB_S_HCLK] =
> + zx_gate("ppu_ahb_s_hclk", "main_hclk", CLK_EN0, 6);
> + clk[ZX296702_VOU_AXI_M_ACLK] =
> + zx_gate("vou_axi_m_aclk", "vou_aclk_mux", CLK_EN0, 7);
> + clk[ZX296702_VOU_APB_PCLK] =
> + zx_gate("vou_apb_pclk", "main_pclk", CLK_EN0, 8);
> + clk[ZX296702_VOU_MAIN_CHANNEL_WCLK] =
> + zx_gate("vou_main_channel_wclk", "vou_main_wclk_mux",
> + CLK_EN0, 9);
> + clk[ZX296702_VOU_AUX_CHANNEL_WCLK] =
> + zx_gate("vou_aux_channel_wclk", "vou_aux_wclk_mux",
> + CLK_EN0, 10);
> + clk[ZX296702_VOU_HDMI_OSCLK_CEC] =
> + zx_gate("vou_hdmi_osclk_cec", "clk_2", CLK_EN0, 11);
> + clk[ZX296702_VOU_SCALER_WCLK] =
> + zx_gate("vou_scaler_wclk", "vou_scaler_wclk_mux", CLK_EN0, 12);
> + clk[ZX296702_MALI400_AXI_M_ACLK] =
> + zx_gate("mali400_axi_m_aclk", "mali400_aclk_mux", CLK_EN0, 13);
> + clk[ZX296702_MALI400_APB_PCLK] =
> + zx_gate("mali400_apb_pclk", "main_pclk", CLK_EN0, 14);
> + clk[ZX296702_R2D_WCLK] =
> + zx_gate("r2d_wclk", "r2d_wclk_mux", CLK_EN0, 15);
> + clk[ZX296702_R2D_AXI_M_ACLK] =
> + zx_gate("r2d_axi_m_aclk", "r2d_aclk_mux", CLK_EN0, 16);
> + clk[ZX296702_R2D_AHB_HCLK] =
> + zx_gate("r2d_ahb_hclk", "main_hclk", CLK_EN0, 17);
> + clk[ZX296702_DDR3_AXI_S0_ACLK] =
> + zx_gate("ddr3_axi_s0_aclk", "matrix_aclk", CLK_EN0, 18);
> + clk[ZX296702_DDR3_APB_PCLK] =
> + zx_gate("ddr3_apb_pclk", "main_pclk", CLK_EN0, 19);
> + clk[ZX296702_DDR3_WCLK] =
> + zx_gate("ddr3_wclk", "ddr_wclk_mux", CLK_EN0, 20);
> + clk[ZX296702_USB20_0_AHB_HCLK] =
> + zx_gate("usb20_0_ahb_hclk", "main_hclk", CLK_EN0, 21);
> + clk[ZX296702_USB20_0_EXTREFCLK] =
> + zx_gate("usb20_0_extrefclk", "clk_12", CLK_EN0, 22);
> + clk[ZX296702_USB20_1_AHB_HCLK] =
> + zx_gate("usb20_1_ahb_hclk", "main_hclk", CLK_EN0, 23);
> + clk[ZX296702_USB20_1_EXTREFCLK] =
> + zx_gate("usb20_1_extrefclk", "clk_12", CLK_EN0, 24);
> + clk[ZX296702_USB20_2_AHB_HCLK] =
> + zx_gate("usb20_2_ahb_hclk", "main_hclk", CLK_EN0, 25);
> + clk[ZX296702_USB20_2_EXTREFCLK] =
> + zx_gate("usb20_2_extrefclk", "clk_12", CLK_EN0, 26);
> + clk[ZX296702_GMAC_AXI_M_ACLK] =
> + zx_gate("gmac_axi_m_aclk", "matrix_aclk", CLK_EN0, 27);
> + clk[ZX296702_GMAC_APB_PCLK] =
> + zx_gate("gmac_apb_pclk", "main_pclk", CLK_EN0, 28);
> + clk[ZX296702_GMAC_125_CLKIN] =
> + zx_gate("gmac_125_clkin", "clk_125", CLK_EN0, 29);
> + clk[ZX296702_GMAC_RMII_CLKIN] =
> + zx_gate("gmac_rmii_clkin", "clk_50", CLK_EN0, 30);
> + clk[ZX296702_GMAC_25M_CLK] =
> + zx_gate("gmac_25M_clk", "clk_25", CLK_EN0, 31);
> + clk[ZX296702_NANDFLASH_AHB_HCLK] =
> + zx_gate("nandflash_ahb_hclk", "main_hclk", CLK_EN1, 0);
> + clk[ZX296702_NANDFLASH_WCLK] =
> + zx_gate("nandflash_wclk", "nand_wclk_mux", CLK_EN1, 1);
> + clk[ZX296702_LSP0_APB_PCLK] =
> + zx_gate("lsp0_apb_pclk", "main_pclk", CLK_EN1, 2);
> + clk[ZX296702_LSP0_AHB_HCLK] =
> + zx_gate("lsp0_ahb_hclk", "main_hclk", CLK_EN1, 3);
> + clk[ZX296702_LSP0_26M_WCLK] =
> + zx_gate("lsp0_26M_wclk", "lsp_26_wclk_mux", CLK_EN1, 4);
> + clk[ZX296702_LSP0_104M_WCLK] =
> + zx_gate("lsp0_104M_wclk", "pll_lsp_104M", CLK_EN1, 5);
> + clk[ZX296702_LSP0_16M384_WCLK] =
> + zx_gate("lsp0_16M384_wclk", "clk_16M384", CLK_EN1, 6);
> + clk[ZX296702_LSP1_APB_PCLK] =
> + zx_gate("lsp1_apb_pclk", "main_pclk", CLK_EN1, 7);
> + /* FIXME: wclk enable bit is bit8. We hack it as reserved 31 for
> + * UART does not work after parent clk is disabled/enabled */
> + clk[ZX296702_LSP1_26M_WCLK] =
> + zx_gate("lsp1_26M_wclk", "lsp_26_wclk_mux", CLK_EN1, 31);
> + clk[ZX296702_LSP1_104M_WCLK] =
> + zx_gate("lsp1_104M_wclk", "pll_lsp_104M", CLK_EN1, 9);
> + clk[ZX296702_LSP1_32K_CLK] =
> + zx_gate("lsp1_32K_clk", "clk_32K768", CLK_EN1, 10);
> + clk[ZX296702_AON_HCLK] =
> + zx_gate("aon_hclk", "main_hclk", CLK_EN1, 11);
> + clk[ZX296702_SYS_CTRL_PCLK] =
> + zx_gate("sys_ctrl_pclk", "main_pclk", CLK_EN1, 12);
> + clk[ZX296702_DMA_PCLK] =
> + zx_gate("dma_pclk", "main_pclk", CLK_EN1, 13);
> + clk[ZX296702_DMA_ACLK] =
> + zx_gate("dma_aclk", "matrix_aclk", CLK_EN1, 14);
> + clk[ZX296702_SEC_HCLK] =
> + zx_gate("sec_hclk", "main_hclk", CLK_EN1, 15);
> + clk[ZX296702_AES_WCLK] =
> + zx_gate("aes_wclk", "sec_wclk_div", CLK_EN1, 16);
> + clk[ZX296702_DES_WCLK] =
> + zx_gate("des_wclk", "sec_wclk_div", CLK_EN1, 17);
> + clk[ZX296702_IRAM_ACLK] =
> + zx_gate("iram_aclk", "matrix_aclk", CLK_EN1, 18);
> + clk[ZX296702_IROM_ACLK] =
> + zx_gate("irom_aclk", "matrix_aclk", CLK_EN1, 19);
> + clk[ZX296702_BOOT_CTRL_HCLK] =
> + zx_gate("boot_ctrl_hclk", "main_hclk", CLK_EN1, 20);
> + clk[ZX296702_EFUSE_CLK_30] =
> + zx_gate("efuse_clk_30", "osc", CLK_EN1, 21);
> +
> + /* TODO: add VOU Local clocks */
> + clk[ZX296702_VOU_MAIN_CHANNEL_DIV] =
> + zx_div("vou_main_channel_div", "vou_main_channel_wclk",
> + VOU_LOCAL_DIV2_SET, 1, 1);
> + clk[ZX296702_VOU_AUX_CHANNEL_DIV] =
> + zx_div("vou_aux_channel_div", "vou_aux_channel_wclk",
> + VOU_LOCAL_DIV2_SET, 0, 1);
> + clk[ZX296702_VOU_TV_ENC_HD_DIV] =
> + zx_div("vou_tv_enc_hd_div", "vou_tv_enc_hd_mux",
> + VOU_LOCAL_DIV2_SET, 3, 1);
> + clk[ZX296702_VOU_TV_ENC_SD_DIV] =
> + zx_div("vou_tv_enc_sd_div", "vou_tv_enc_sd_mux",
> + VOU_LOCAL_DIV2_SET, 2, 1);
> + clk[ZX296702_VL0_MUX] =
> + zx_mux("vl0_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
> + VOU_LOCAL_CLKSEL, 8, 1);
> + clk[ZX296702_VL1_MUX] =
> + zx_mux("vl1_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
> + VOU_LOCAL_CLKSEL, 9, 1);
> + clk[ZX296702_VL2_MUX] =
> + zx_mux("vl2_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
> + VOU_LOCAL_CLKSEL, 10, 1);
> + clk[ZX296702_GL0_MUX] =
> + zx_mux("gl0_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
> + VOU_LOCAL_CLKSEL, 5, 1);
> + clk[ZX296702_GL1_MUX] =
> + zx_mux("gl1_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
> + VOU_LOCAL_CLKSEL, 6, 1);
> + clk[ZX296702_GL2_MUX] =
> + zx_mux("gl2_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
> + VOU_LOCAL_CLKSEL, 7, 1);
> + clk[ZX296702_WB_MUX] =
> + zx_mux("wb_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
> + VOU_LOCAL_CLKSEL, 11, 1);
> + clk[ZX296702_HDMI_MUX] =
> + zx_mux("hdmi_mux", hdmi_sel, ARRAY_SIZE(hdmi_sel),
> + VOU_LOCAL_CLKSEL, 4, 1);
> + clk[ZX296702_VOU_TV_ENC_HD_MUX] =
> + zx_mux("vou_tv_enc_hd_mux", hdmi_sel, ARRAY_SIZE(hdmi_sel),
> + VOU_LOCAL_CLKSEL, 3, 1);
> + clk[ZX296702_VOU_TV_ENC_SD_MUX] =
> + zx_mux("vou_tv_enc_sd_mux", hdmi_sel, ARRAY_SIZE(hdmi_sel),
> + VOU_LOCAL_CLKSEL, 2, 1);
> + clk[ZX296702_VL0_CLK] =
> + zx_gate("vl0_clk", "vl0_mux", VOU_LOCAL_CLKEN, 8);
> + clk[ZX296702_VL1_CLK] =
> + zx_gate("vl1_clk", "vl1_mux", VOU_LOCAL_CLKEN, 9);
> + clk[ZX296702_VL2_CLK] =
> + zx_gate("vl2_clk", "vl2_mux", VOU_LOCAL_CLKEN, 10);
> + clk[ZX296702_GL0_CLK] =
> + zx_gate("gl0_clk", "gl0_mux", VOU_LOCAL_CLKEN, 5);
> + clk[ZX296702_GL1_CLK] =
> + zx_gate("gl1_clk", "gl1_mux", VOU_LOCAL_CLKEN, 6);
> + clk[ZX296702_GL2_CLK] =
> + zx_gate("gl2_clk", "gl2_mux", VOU_LOCAL_CLKEN, 7);
> + clk[ZX296702_WB_CLK] =
> + zx_gate("wb_clk", "wb_mux", VOU_LOCAL_CLKEN, 11);
> + clk[ZX296702_CL_CLK] =
> + zx_gate("cl_clk", "vou_main_channel_div", VOU_LOCAL_CLKEN, 12);
> + clk[ZX296702_MAIN_MIX_CLK] =
> + zx_gate("main_mix_clk", "vou_main_channel_div",
> + VOU_LOCAL_CLKEN, 4);
> + clk[ZX296702_AUX_MIX_CLK] =
> + zx_gate("aux_mix_clk", "vou_aux_channel_div",
> + VOU_LOCAL_CLKEN, 3);
> + clk[ZX296702_HDMI_CLK] =
> + zx_gate("hdmi_clk", "hdmi_mux", VOU_LOCAL_CLKEN, 2);
> + clk[ZX296702_VOU_TV_ENC_HD_DAC_CLK] =
> + zx_gate("vou_tv_enc_hd_dac_clk", "vou_tv_enc_hd_div",
> + VOU_LOCAL_CLKEN, 1);
> + clk[ZX296702_VOU_TV_ENC_SD_DAC_CLK] =
> + zx_gate("vou_tv_enc_sd_dac_clk", "vou_tv_enc_sd_div",
> + VOU_LOCAL_CLKEN, 0);
> +
> + /* CA9 PERIPHCLK = a9_wclk / 2 */
> + clk[ZX296702_A9_PERIPHCLK] =
> + clk_register_fixed_factor(NULL, "a9_periphclk", "a9_wclk",
> + 0, 1, 2);
> +
> + for (i = 0; i < ARRAY_SIZE(topclk); i++) {
> + if (IS_ERR(clk[i])) {
> + pr_err("zx296702 clk %d: register failed with %ld\n",
> + i, PTR_ERR(clk[i]));
> + return;
> + }
> + }
> +
> + topclk_data.clks = topclk;
> + topclk_data.clk_num = ARRAY_SIZE(topclk);
> + of_clk_add_provider(np, of_clk_src_onecell_get, &topclk_data);
> +}
> +CLK_OF_DECLARE(zx296702_top_clk, "zte,zx296702-topcrm-clk",
> + zx296702_top_clocks_init);
> +
> +static void __init zx296702_lsp0_clocks_init(struct device_node *np)
> +{
> + struct clk **clk = lsp0clk;
> + int i;
> +
> + lsp0crpm_base = of_iomap(np, 0);
> + WARN_ON(!lsp0crpm_base);
> +
> + /* SDMMC1 */
> + clk[ZX296702_SDMMC1_WCLK_MUX] =
> + zx_mux("sdmmc1_wclk_mux", sdmmc1_wclk_sel,
> + ARRAY_SIZE(sdmmc1_wclk_sel), CLK_SDMMC1, 4, 1);
> + clk[ZX296702_SDMMC1_WCLK_DIV] =
> + zx_div("sdmmc1_wclk_div", "sdmmc1_wclk_mux", CLK_SDMMC1, 12, 4);
> + clk[ZX296702_SDMMC1_WCLK] =
> + zx_gate("sdmmc1_wclk", "sdmmc1_wclk_div", CLK_SDMMC1, 1);
> + clk[ZX296702_SDMMC1_PCLK] =
> + zx_gate("sdmmc1_pclk", "lsp1_apb_pclk", CLK_SDMMC1, 0);
> +
> + for (i = 0; i < ARRAY_SIZE(lsp0clk); i++) {
> + if (IS_ERR(clk[i])) {
> + pr_err("zx296702 clk %d: register failed with %ld\n",
> + i, PTR_ERR(clk[i]));
> + return;
> + }
> + }
> +
> + lsp0clk_data.clks = lsp0clk;
> + lsp0clk_data.clk_num = ARRAY_SIZE(lsp0clk);
> + of_clk_add_provider(np, of_clk_src_onecell_get, &lsp0clk_data);
> +}
> +CLK_OF_DECLARE(zx296702_lsp0_clk, "zte,zx296702-lsp0crpm-clk",
> + zx296702_lsp0_clocks_init);
> +
> +static void __init zx296702_lsp1_clocks_init(struct device_node *np)
> +{
> + struct clk **clk = lsp1clk;
> + int i;
> +
> + lsp1crpm_base = of_iomap(np, 0);
> + WARN_ON(!lsp1crpm_base);
> +
> + /* UART0 */
> + clk[ZX296702_UART0_WCLK_MUX] =
> + zx_mux("uart0_wclk_mux", uart_wclk_sel,
> + ARRAY_SIZE(uart_wclk_sel), CLK_UART0, 4, 1);
> + /* FIXME: uart wclk enable bit is bit1 in. We hack it as reserved 31 for
> + * UART does not work after parent clk is disabled/enabled */
> + clk[ZX296702_UART0_WCLK] =
> + zx_gate("uart0_wclk", "uart0_wclk_mux", CLK_UART0, 31);
> + clk[ZX296702_UART0_PCLK] =
> + zx_gate("uart0_pclk", "lsp1_apb_pclk", CLK_UART0, 0);
> +
> + /* UART1 */
> + clk[ZX296702_UART1_WCLK_MUX] =
> + zx_mux("uart1_wclk_mux", uart_wclk_sel,
> + ARRAY_SIZE(uart_wclk_sel), CLK_UART1, 4, 1);
> + clk[ZX296702_UART1_WCLK] =
> + zx_gate("uart1_wclk", "uart1_wclk_mux", CLK_UART1, 1);
> + clk[ZX296702_UART1_PCLK] =
> + zx_gate("uart1_pclk", "lsp1_apb_pclk", CLK_UART1, 0);
> +
> + /* SDMMC0 */
> + clk[ZX296702_SDMMC0_WCLK_MUX] =
> + zx_mux("sdmmc0_wclk_mux", sdmmc0_wclk_sel,
> + ARRAY_SIZE(sdmmc0_wclk_sel), CLK_SDMMC0, 4, 1);
> + clk[ZX296702_SDMMC0_WCLK_DIV] =
> + zx_div("sdmmc0_wclk_div", "sdmmc0_wclk_mux", CLK_SDMMC0, 12, 4);
> + clk[ZX296702_SDMMC0_WCLK] =
> + zx_gate("sdmmc0_wclk", "sdmmc0_wclk_div", CLK_SDMMC0, 1);
> + clk[ZX296702_SDMMC0_PCLK] =
> + zx_gate("sdmmc0_pclk", "lsp1_apb_pclk", CLK_SDMMC0, 0);
> +
> + for (i = 0; i < ARRAY_SIZE(lsp1clk); i++) {
> + if (IS_ERR(clk[i])) {
> + pr_err("zx296702 clk %d: register failed with %ld\n",
> + i, PTR_ERR(clk[i]));
> + return;
> + }
> + }
> +
> + lsp1clk_data.clks = lsp1clk;
> + lsp1clk_data.clk_num = ARRAY_SIZE(lsp1clk);
> + of_clk_add_provider(np, of_clk_src_onecell_get, &lsp1clk_data);
> +}
> +CLK_OF_DECLARE(zx296702_lsp1_clk, "zte,zx296702-lsp1crpm-clk",
> + zx296702_lsp1_clocks_init);
> diff --git a/drivers/clk/zte/clk.h b/drivers/clk/zte/clk.h
> new file mode 100644
> index 0000000..0914a82
> --- /dev/null
> +++ b/drivers/clk/zte/clk.h
> @@ -0,0 +1,32 @@
> +/*
> + * Copyright 2015 Linaro Ltd.
> + * Copyright (C) 2014 ZTE Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#ifndef __ZTE_CLK_H
> +#define __ZTE_CLK_H
> +#include <linux/clk-provider.h>
> +#include <linux/spinlock.h>
> +
> +struct zx_pll_config {
> + unsigned long rate;
> + u32 cfg0;
> + u32 cfg1;
> +};
> +
> +struct clk_zx_pll {
> + struct clk_hw hw;
> + void __iomem *reg_base;
> + const struct zx_pll_config *lookup_table; /* order by rate asc */
> + int count;
> + spinlock_t *lock;
> +};
> +
> +struct clk *clk_register_zx_pll(const char *name, const char *parent_name,
> + unsigned long flags, void __iomem *reg_base,
> + const struct zx_pll_config *lookup_table, int count, spinlock_t *lock);
> +#endif
> --
> 1.9.1
>
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