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clk: meson: meson8b: add support for the GP_PLL clock on Meson8m2

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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>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190324151104.18397-4-martin.blumenstingl@googlemail.com
This commit is contained in:
Martin Blumenstingl 2019-03-24 16:11:03 +01:00 committed by Neil Armstrong
parent 32cd198a1a
commit b882964b37
2 changed files with 66 additions and 1 deletions
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62
drivers/clk/meson/meson8b.c
View File

@ -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 {

5
drivers/clk/meson/meson8b.h
View File

@ -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