[PATCH 3/4] clk: meson: meson8b: add support for the GP_PLL clock on Meson8m2
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Date: 2019-03-19 21:52:25
Also in:
linux-amlogic, linux-clk, linux-devicetree, lkml
Subsystem:
arm/amlogic meson soc clock framework, common clk framework, the rest · Maintainers:
Neil Armstrong, Jerome Brunet, Michael Turquette, Stephen Boyd, Linus Torvalds
Meson8m2 has a GP_PLL clock (similar to GP0_PLL on GXBB/GXL/GXM) which is used as input for the VPU clocks. The only supported frequency (based on Amlogic's vendor kernel sources) is 364MHz which is achieved using the following parameters: - input: XTAL (24MHz) - M = 182 - N = 3 - OD = 2 ^ 2 Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> --- drivers/clk/meson/meson8b.c | 62 +++++++++++++++++++++++++++++++++++++ drivers/clk/meson/meson8b.h | 5 ++- 2 files changed, 66 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index c9e6ec67d649..0d08f1ef7af8 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c@@ -1703,6 +1703,64 @@ static struct clk_regmap meson8b_mali = { }, }; +static const struct pll_params_table meson8m2_gp_pll_params_table[] = { + PLL_PARAMS(182, 3), + { /* sentinel */ }, +}; + +static struct clk_regmap meson8m2_gp_pll_dco = { + .data = &(struct meson_clk_pll_data){ + .en = { + .reg_off = HHI_GP_PLL_CNTL, + .shift = 30, + .width = 1, + }, + .m = { + .reg_off = HHI_GP_PLL_CNTL, + .shift = 0, + .width = 9, + }, + .n = { + .reg_off = HHI_GP_PLL_CNTL, + .shift = 9, + .width = 5, + }, + .l = { + .reg_off = HHI_GP_PLL_CNTL, + .shift = 31, + .width = 1, + }, + .rst = { + .reg_off = HHI_GP_PLL_CNTL, + .shift = 29, + .width = 1, + }, + .table = meson8m2_gp_pll_params_table, + }, + .hw.init = &(struct clk_init_data){ + .name = "gp_pll_dco", + .ops = &meson_clk_pll_ops, + .parent_names = (const char *[]){ "xtal" }, + .num_parents = 1, + }, +}; + +static struct clk_regmap meson8m2_gp_pll = { + .data = &(struct clk_regmap_div_data){ + .offset = HHI_GP_PLL_CNTL, + .shift = 16, + .width = 2, + .flags = CLK_DIVIDER_POWER_OF_TWO, + }, + .hw.init = &(struct clk_init_data){ + .name = "gp_pll", + .ops = &clk_regmap_divider_ops, + .parent_names = (const char *[]){ "gp_pll_dco" }, + .num_parents = 1, + .flags = CLK_SET_RATE_PARENT, + }, +}; + /* Everything Else (EE) domain gates */ static MESON_GATE(meson8b_ddr, HHI_GCLK_MPEG0, 0);
@@ -2338,6 +2396,8 @@ static struct clk_hw_onecell_data meson8m2_hw_onecell_data = { [CLKID_MALI_1_DIV] = &meson8b_mali_1_div.hw, [CLKID_MALI_1] = &meson8b_mali_1.hw, [CLKID_MALI] = &meson8b_mali.hw, + [CLKID_GP_PLL_DCO] = &meson8m2_gp_pll_dco.hw, + [CLKID_GP_PLL] = &meson8m2_gp_pll.hw, [CLK_NR_CLKS] = NULL, }, .num = CLK_NR_CLKS,
@@ -2500,6 +2560,8 @@ static struct clk_regmap *const meson8b_clk_regmaps[] = { &meson8b_mali_1_div, &meson8b_mali_1, &meson8b_mali, + &meson8m2_gp_pll_dco, + &meson8m2_gp_pll, }; static const struct meson8b_clk_reset_line {
diff --git a/drivers/clk/meson/meson8b.h b/drivers/clk/meson/meson8b.h
index b8c58faeae52..a45f7102c558 100644
--- a/drivers/clk/meson/meson8b.h
+++ b/drivers/clk/meson/meson8b.h@@ -19,6 +19,7 @@ * * [0] http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf */ +#define HHI_GP_PLL_CNTL 0x40 /* 0x10 offset in data sheet */ #define HHI_VIID_CLK_DIV 0x128 /* 0x4a offset in data sheet */ #define HHI_VIID_CLK_CNTL 0x12c /* 0x4b offset in data sheet */ #define HHI_GCLK_MPEG0 0x140 /* 0x50 offset in data sheet */
@@ -146,8 +147,10 @@ #define CLKID_MALI_1_SEL 178 #define CLKID_MALI_1_DIV 179 #define CLKID_MALI_1 180 +#define CLKID_GP_PLL_DCO 181 +#define CLKID_GP_PLL 182 -#define CLK_NR_CLKS 181 +#define CLK_NR_CLKS 183 /* * include the CLKID and RESETID that have
--
2.21.0
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