From 370294e2667fa1648eb05aab6c4657419634ff83 Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Mon, 4 Mar 2019 14:11:29 +0100 Subject: [PATCH] clk: meson: g12a: add cpu clocks Add the Amlogic G12A Family CPU Clock tree in read/only for now. The CPU clock can either use the SYS_PLL for > 1GHz frequencies or use a couple of div+mux from 1GHz/667MHz/24MHz source with 2 non-glitch muxes. Proper DVFS support will come in a second time. Signed-off-by: Neil Armstrong Reviewed-by: Martin Blumenstingl Acked-by: Jerome Brunet [narmstrong: fixed cpu clocks namings] Link: https://lkml.kernel.org/r/20190304131129.7762-3-narmstrong@baylibre.com --- drivers/clk/meson/g12a.c | 350 +++++++++++++++++++++++++++++++++++++++ drivers/clk/meson/g12a.h | 22 ++- 2 files changed, 371 insertions(+), 1 deletion(-) diff --git a/drivers/clk/meson/g12a.c b/drivers/clk/meson/g12a.c index 0e1ce8c03259..10ba8bc4646d 100644 --- a/drivers/clk/meson/g12a.c +++ b/drivers/clk/meson/g12a.c @@ -150,6 +150,318 @@ static struct clk_regmap g12a_sys_pll = { }, }; +static struct clk_regmap g12a_sys_pll_div16_en = { + .data = &(struct clk_regmap_gate_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .bit_idx = 24, + }, + .hw.init = &(struct clk_init_data) { + .name = "sys_pll_div16_en", + .ops = &clk_regmap_gate_ro_ops, + .parent_names = (const char *[]){ "sys_pll" }, + .num_parents = 1, + /* + * This clock is used to debug the sys_pll range + * Linux should not change it at runtime + */ + }, +}; + +static struct clk_fixed_factor g12a_sys_pll_div16 = { + .mult = 1, + .div = 16, + .hw.init = &(struct clk_init_data){ + .name = "sys_pll_div16", + .ops = &clk_fixed_factor_ops, + .parent_names = (const char *[]){ "sys_pll_div16_en" }, + .num_parents = 1, + }, +}; + +/* Datasheet names this field as "premux0" */ +static struct clk_regmap g12a_cpu_clk_premux0 = { + .data = &(struct clk_regmap_mux_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .mask = 0x3, + .shift = 0, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_dyn0_sel", + .ops = &clk_regmap_mux_ro_ops, + .parent_names = (const char *[]){ IN_PREFIX "xtal", + "fclk_div2", + "fclk_div3" }, + .num_parents = 3, + }, +}; + +/* Datasheet names this field as "mux0_divn_tcnt" */ +static struct clk_regmap g12a_cpu_clk_mux0_div = { + .data = &(struct clk_regmap_div_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .shift = 4, + .width = 6, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_dyn0_div", + .ops = &clk_regmap_divider_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_dyn0_sel" }, + .num_parents = 1, + }, +}; + +/* Datasheet names this field as "postmux0" */ +static struct clk_regmap g12a_cpu_clk_postmux0 = { + .data = &(struct clk_regmap_mux_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .mask = 0x1, + .shift = 2, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_dyn0", + .ops = &clk_regmap_mux_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_dyn0_sel", + "cpu_clk_dyn0_div" }, + .num_parents = 2, + }, +}; + +/* Datasheet names this field as "premux1" */ +static struct clk_regmap g12a_cpu_clk_premux1 = { + .data = &(struct clk_regmap_mux_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .mask = 0x3, + .shift = 16, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_dyn1_sel", + .ops = &clk_regmap_mux_ro_ops, + .parent_names = (const char *[]){ IN_PREFIX "xtal", + "fclk_div2", + "fclk_div3" }, + .num_parents = 3, + }, +}; + +/* Datasheet names this field as "Mux1_divn_tcnt" */ +static struct clk_regmap g12a_cpu_clk_mux1_div = { + .data = &(struct clk_regmap_div_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .shift = 20, + .width = 6, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_dyn1_div", + .ops = &clk_regmap_divider_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_dyn1_sel" }, + .num_parents = 1, + }, +}; + +/* Datasheet names this field as "postmux1" */ +static struct clk_regmap g12a_cpu_clk_postmux1 = { + .data = &(struct clk_regmap_mux_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .mask = 0x1, + .shift = 18, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_dyn1", + .ops = &clk_regmap_mux_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_dyn1_sel", + "cpu_clk_dyn1_div" }, + .num_parents = 2, + }, +}; + +/* Datasheet names this field as "Final_dyn_mux_sel" */ +static struct clk_regmap g12a_cpu_clk_dyn = { + .data = &(struct clk_regmap_mux_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .mask = 0x1, + .shift = 10, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_dyn", + .ops = &clk_regmap_mux_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_dyn0", + "cpu_clk_dyn1" }, + .num_parents = 2, + }, +}; + +/* Datasheet names this field as "Final_mux_sel" */ +static struct clk_regmap g12a_cpu_clk = { + .data = &(struct clk_regmap_mux_data){ + .offset = HHI_SYS_CPU_CLK_CNTL0, + .mask = 0x1, + .shift = 11, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk", + .ops = &clk_regmap_mux_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_dyn", + "sys_pll" }, + .num_parents = 2, + }, +}; + +static struct clk_regmap g12a_cpu_clk_div16_en = { + .data = &(struct clk_regmap_gate_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .bit_idx = 1, + }, + .hw.init = &(struct clk_init_data) { + .name = "cpu_clk_div16_en", + .ops = &clk_regmap_gate_ro_ops, + .parent_names = (const char *[]){ "cpu_clk" }, + .num_parents = 1, + /* + * This clock is used to debug the cpu_clk range + * Linux should not change it at runtime + */ + }, +}; + +static struct clk_fixed_factor g12a_cpu_clk_div16 = { + .mult = 1, + .div = 16, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_div16", + .ops = &clk_fixed_factor_ops, + .parent_names = (const char *[]){ "cpu_clk_div16_en" }, + .num_parents = 1, + }, +}; + +static struct clk_regmap g12a_cpu_clk_apb_div = { + .data = &(struct clk_regmap_div_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .shift = 3, + .width = 3, + .flags = CLK_DIVIDER_POWER_OF_TWO, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_apb_div", + .ops = &clk_regmap_divider_ro_ops, + .parent_names = (const char *[]){ "cpu_clk" }, + .num_parents = 1, + }, +}; + +static struct clk_regmap g12a_cpu_clk_apb = { + .data = &(struct clk_regmap_gate_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .bit_idx = 1, + }, + .hw.init = &(struct clk_init_data) { + .name = "cpu_clk_apb", + .ops = &clk_regmap_gate_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_apb_div" }, + .num_parents = 1, + /* + * This clock is set by the ROM monitor code, + * Linux should not change it at runtime + */ + }, +}; + +static struct clk_regmap g12a_cpu_clk_atb_div = { + .data = &(struct clk_regmap_div_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .shift = 6, + .width = 3, + .flags = CLK_DIVIDER_POWER_OF_TWO, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_atb_div", + .ops = &clk_regmap_divider_ro_ops, + .parent_names = (const char *[]){ "cpu_clk" }, + .num_parents = 1, + }, +}; + +static struct clk_regmap g12a_cpu_clk_atb = { + .data = &(struct clk_regmap_gate_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .bit_idx = 17, + }, + .hw.init = &(struct clk_init_data) { + .name = "cpu_clk_atb", + .ops = &clk_regmap_gate_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_atb_div" }, + .num_parents = 1, + /* + * This clock is set by the ROM monitor code, + * Linux should not change it at runtime + */ + }, +}; + +static struct clk_regmap g12a_cpu_clk_axi_div = { + .data = &(struct clk_regmap_div_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .shift = 9, + .width = 3, + .flags = CLK_DIVIDER_POWER_OF_TWO, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_axi_div", + .ops = &clk_regmap_divider_ro_ops, + .parent_names = (const char *[]){ "cpu_clk" }, + .num_parents = 1, + }, +}; + +static struct clk_regmap g12a_cpu_clk_axi = { + .data = &(struct clk_regmap_gate_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .bit_idx = 18, + }, + .hw.init = &(struct clk_init_data) { + .name = "cpu_clk_axi", + .ops = &clk_regmap_gate_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_axi_div" }, + .num_parents = 1, + /* + * This clock is set by the ROM monitor code, + * Linux should not change it at runtime + */ + }, +}; + +static struct clk_regmap g12a_cpu_clk_trace_div = { + .data = &(struct clk_regmap_div_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .shift = 20, + .width = 3, + .flags = CLK_DIVIDER_POWER_OF_TWO, + }, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk_trace_div", + .ops = &clk_regmap_divider_ro_ops, + .parent_names = (const char *[]){ "cpu_clk" }, + .num_parents = 1, + }, +}; + +static struct clk_regmap g12a_cpu_clk_trace = { + .data = &(struct clk_regmap_gate_data){ + .offset = HHI_SYS_CPU_CLK_CNTL1, + .bit_idx = 23, + }, + .hw.init = &(struct clk_init_data) { + .name = "cpu_clk_trace", + .ops = &clk_regmap_gate_ro_ops, + .parent_names = (const char *[]){ "cpu_clk_trace_div" }, + .num_parents = 1, + /* + * This clock is set by the ROM monitor code, + * Linux should not change it at runtime + */ + }, +}; + static const struct pll_mult_range g12a_gp0_pll_mult_range = { .min = 55, .max = 255, @@ -2167,6 +2479,26 @@ static struct clk_hw_onecell_data g12a_hw_onecell_data = { [CLKID_MALI] = &g12a_mali.hw, [CLKID_MPLL_5OM_DIV] = &g12a_mpll_50m_div.hw, [CLKID_MPLL_5OM] = &g12a_mpll_50m.hw, + [CLKID_SYS_PLL_DIV16_EN] = &g12a_sys_pll_div16_en.hw, + [CLKID_SYS_PLL_DIV16] = &g12a_sys_pll_div16.hw, + [CLKID_CPU_CLK_DYN0_SEL] = &g12a_cpu_clk_premux0.hw, + [CLKID_CPU_CLK_DYN0_DIV] = &g12a_cpu_clk_mux0_div.hw, + [CLKID_CPU_CLK_DYN0] = &g12a_cpu_clk_postmux0.hw, + [CLKID_CPU_CLK_DYN1_SEL] = &g12a_cpu_clk_premux1.hw, + [CLKID_CPU_CLK_DYN1_DIV] = &g12a_cpu_clk_mux1_div.hw, + [CLKID_CPU_CLK_DYN1] = &g12a_cpu_clk_postmux1.hw, + [CLKID_CPU_CLK_DYN] = &g12a_cpu_clk_dyn.hw, + [CLKID_CPU_CLK] = &g12a_cpu_clk.hw, + [CLKID_CPU_CLK_DIV16_EN] = &g12a_cpu_clk_div16_en.hw, + [CLKID_CPU_CLK_DIV16] = &g12a_cpu_clk_div16.hw, + [CLKID_CPU_CLK_APB_DIV] = &g12a_cpu_clk_apb_div.hw, + [CLKID_CPU_CLK_APB] = &g12a_cpu_clk_apb.hw, + [CLKID_CPU_CLK_ATB_DIV] = &g12a_cpu_clk_atb_div.hw, + [CLKID_CPU_CLK_ATB] = &g12a_cpu_clk_atb.hw, + [CLKID_CPU_CLK_AXI_DIV] = &g12a_cpu_clk_axi_div.hw, + [CLKID_CPU_CLK_AXI] = &g12a_cpu_clk_axi.hw, + [CLKID_CPU_CLK_TRACE_DIV] = &g12a_cpu_clk_trace_div.hw, + [CLKID_CPU_CLK_TRACE] = &g12a_cpu_clk_trace.hw, [NR_CLKS] = NULL, }, .num = NR_CLKS, @@ -2335,6 +2667,24 @@ static struct clk_regmap *const g12a_clk_regmaps[] = { &g12a_mali_1, &g12a_mali, &g12a_mpll_50m, + &g12a_sys_pll_div16_en, + &g12a_cpu_clk_premux0, + &g12a_cpu_clk_mux0_div, + &g12a_cpu_clk_postmux0, + &g12a_cpu_clk_premux1, + &g12a_cpu_clk_mux1_div, + &g12a_cpu_clk_postmux1, + &g12a_cpu_clk_dyn, + &g12a_cpu_clk, + &g12a_cpu_clk_div16_en, + &g12a_cpu_clk_apb_div, + &g12a_cpu_clk_apb, + &g12a_cpu_clk_atb_div, + &g12a_cpu_clk_atb, + &g12a_cpu_clk_axi_div, + &g12a_cpu_clk_axi, + &g12a_cpu_clk_trace_div, + &g12a_cpu_clk_trace, }; static const struct meson_eeclkc_data g12a_clkc_data = { diff --git a/drivers/clk/meson/g12a.h b/drivers/clk/meson/g12a.h index f399dfe1401c..70aa469ca1cf 100644 --- a/drivers/clk/meson/g12a.h +++ b/drivers/clk/meson/g12a.h @@ -50,6 +50,7 @@ #define HHI_GCLK_MPEG2 0x148 #define HHI_GCLK_OTHER 0x150 #define HHI_GCLK_OTHER2 0x154 +#define HHI_SYS_CPU_CLK_CNTL1 0x15c #define HHI_VID_CLK_DIV 0x164 #define HHI_MPEG_CLK_CNTL 0x174 #define HHI_AUD_CLK_CNTL 0x178 @@ -166,8 +167,27 @@ #define CLKID_MALI_0_DIV 170 #define CLKID_MALI_1_DIV 173 #define CLKID_MPLL_5OM_DIV 176 +#define CLKID_SYS_PLL_DIV16_EN 178 +#define CLKID_SYS_PLL_DIV16 179 +#define CLKID_CPU_CLK_DYN0_SEL 180 +#define CLKID_CPU_CLK_DYN0_DIV 181 +#define CLKID_CPU_CLK_DYN0 182 +#define CLKID_CPU_CLK_DYN1_SEL 183 +#define CLKID_CPU_CLK_DYN1_DIV 184 +#define CLKID_CPU_CLK_DYN1 185 +#define CLKID_CPU_CLK_DYN 186 +#define CLKID_CPU_CLK_DIV16_EN 188 +#define CLKID_CPU_CLK_DIV16 189 +#define CLKID_CPU_CLK_APB_DIV 190 +#define CLKID_CPU_CLK_APB 191 +#define CLKID_CPU_CLK_ATB_DIV 192 +#define CLKID_CPU_CLK_ATB 193 +#define CLKID_CPU_CLK_AXI_DIV 194 +#define CLKID_CPU_CLK_AXI 195 +#define CLKID_CPU_CLK_TRACE_DIV 196 +#define CLKID_CPU_CLK_TRACE 197 -#define NR_CLKS 178 +#define NR_CLKS 198 /* include the CLKIDs that have been made part of the DT binding */ #include