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Date: Sat, 21 Jul 2018 22:01:16 +0200
From: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To: jbrunet@...libre.com
Cc: Neil Armstrong <narmstrong@...libre.com>,
linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org, khilman@...libre.com
Subject: Re: [PATCH 2/3] clk: meson: clk-pll: remove od parameters
Hi Jerome,
On Tue, Jul 17, 2018 at 11:56 AM Jerome Brunet <jbrunet@...libre.com> wrote:
>
> Remove od parameters from pll clocks and add post dividers clocks
> instead. Some clock, especially the one which feature several ods,
> may provide output between those ods. Also, some drivers, such
> as the hdmi driver, may require a more detailed control of the
> clock dividers, compared to what CCF would perform automatically.
>
> One added benefit of removing ods is that it also greatly reduce the
> size of the rate parameter tables.
>
> In the future, we could possibly take the predivider 'n' out of this
> driver as well. To do so, we will need to understand the constraints
> for the PLL to lock and whether or not it depends on the input clock
> rate.
>
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> ---
> drivers/clk/meson/axg.c | 279 ++++++++++++++------------
> drivers/clk/meson/axg.h | 8 +-
> drivers/clk/meson/clk-pll.c | 40 ++--
> drivers/clk/meson/clkc.h | 9 +-
> drivers/clk/meson/gxbb.c | 474 +++++++++++++++++++++-----------------------
> drivers/clk/meson/gxbb.h | 10 +-
> drivers/clk/meson/meson8b.c | 148 +++++++-------
> drivers/clk/meson/meson8b.h | 5 +-
> 8 files changed, 480 insertions(+), 493 deletions(-)
>
> diff --git a/drivers/clk/meson/axg.c b/drivers/clk/meson/axg.c
> index 6d8976554656..572358062459 100644
> --- a/drivers/clk/meson/axg.c
> +++ b/drivers/clk/meson/axg.c
> @@ -22,7 +22,7 @@
>
> static DEFINE_SPINLOCK(meson_clk_lock);
>
> -static struct clk_regmap axg_fixed_pll = {
> +static struct clk_regmap axg_fixed_pll_dco = {
> .data = &(struct meson_clk_pll_data){
> .en = {
> .reg_off = HHI_MPLL_CNTL,
> @@ -39,11 +39,6 @@ static struct clk_regmap axg_fixed_pll = {
> .shift = 9,
> .width = 5,
> },
> - .od = {
> - .reg_off = HHI_MPLL_CNTL,
> - .shift = 16,
> - .width = 2,
> - },
> .frac = {
> .reg_off = HHI_MPLL_CNTL2,
> .shift = 0,
> @@ -61,14 +56,29 @@ static struct clk_regmap axg_fixed_pll = {
> },
> },
> .hw.init = &(struct clk_init_data){
> - .name = "fixed_pll",
> + .name = "fixed_pll_dco",
> .ops = &meson_clk_pll_ro_ops,
> .parent_names = (const char *[]){ "xtal" },
> .num_parents = 1,
> },
> };
>
> -static struct clk_regmap axg_sys_pll = {
> +static struct clk_regmap axg_fixed_pll = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_MPLL_CNTL,
> + .shift = 16,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "fixed_pll",
> + .ops = &clk_regmap_divider_ro_ops,
> + .parent_names = (const char *[]){ "fixed_pll_dco" },
> + .num_parents = 1,
> + },
> +};
> +
> +static struct clk_regmap axg_sys_pll_dco = {
> .data = &(struct meson_clk_pll_data){
> .en = {
> .reg_off = HHI_SYS_PLL_CNTL,
> @@ -85,11 +95,6 @@ static struct clk_regmap axg_sys_pll = {
> .shift = 9,
> .width = 5,
> },
> - .od = {
> - .reg_off = HHI_SYS_PLL_CNTL,
> - .shift = 16,
> - .width = 2,
> - },
> .l = {
> .reg_off = HHI_SYS_PLL_CNTL,
> .shift = 31,
> @@ -102,7 +107,7 @@ static struct clk_regmap axg_sys_pll = {
> },
> },
> .hw.init = &(struct clk_init_data){
> - .name = "sys_pll",
> + .name = "sys_pll_dco",
> .ops = &meson_clk_pll_ro_ops,
> .parent_names = (const char *[]){ "xtal" },
> .num_parents = 1,
> @@ -110,94 +115,51 @@ static struct clk_regmap axg_sys_pll = {
> },
> };
>
> +static struct clk_regmap axg_sys_pll = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_SYS_PLL_CNTL,
> + .shift = 16,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "sys_pll",
> + .ops = &clk_regmap_divider_ro_ops,
> + .parent_names = (const char *[]){ "sys_pll_dco" },
> + .num_parents = 1,
> + },
> +};
> +
> static const struct pll_rate_table axg_gp0_pll_rate_table[] = {
> - PLL_RATE(240000000, 40, 1, 2),
> - PLL_RATE(246000000, 41, 1, 2),
> - PLL_RATE(252000000, 42, 1, 2),
> - PLL_RATE(258000000, 43, 1, 2),
> - PLL_RATE(264000000, 44, 1, 2),
> - PLL_RATE(270000000, 45, 1, 2),
> - PLL_RATE(276000000, 46, 1, 2),
> - PLL_RATE(282000000, 47, 1, 2),
> - PLL_RATE(288000000, 48, 1, 2),
> - PLL_RATE(294000000, 49, 1, 2),
> - PLL_RATE(300000000, 50, 1, 2),
> - PLL_RATE(306000000, 51, 1, 2),
> - PLL_RATE(312000000, 52, 1, 2),
> - PLL_RATE(318000000, 53, 1, 2),
> - PLL_RATE(324000000, 54, 1, 2),
> - PLL_RATE(330000000, 55, 1, 2),
> - PLL_RATE(336000000, 56, 1, 2),
> - PLL_RATE(342000000, 57, 1, 2),
> - PLL_RATE(348000000, 58, 1, 2),
> - PLL_RATE(354000000, 59, 1, 2),
> - PLL_RATE(360000000, 60, 1, 2),
> - PLL_RATE(366000000, 61, 1, 2),
> - PLL_RATE(372000000, 62, 1, 2),
> - PLL_RATE(378000000, 63, 1, 2),
> - PLL_RATE(384000000, 64, 1, 2),
> - PLL_RATE(390000000, 65, 1, 3),
> - PLL_RATE(396000000, 66, 1, 3),
> - PLL_RATE(402000000, 67, 1, 3),
> - PLL_RATE(408000000, 68, 1, 3),
> - PLL_RATE(480000000, 40, 1, 1),
> - PLL_RATE(492000000, 41, 1, 1),
> - PLL_RATE(504000000, 42, 1, 1),
> - PLL_RATE(516000000, 43, 1, 1),
> - PLL_RATE(528000000, 44, 1, 1),
> - PLL_RATE(540000000, 45, 1, 1),
> - PLL_RATE(552000000, 46, 1, 1),
> - PLL_RATE(564000000, 47, 1, 1),
> - PLL_RATE(576000000, 48, 1, 1),
> - PLL_RATE(588000000, 49, 1, 1),
> - PLL_RATE(600000000, 50, 1, 1),
> - PLL_RATE(612000000, 51, 1, 1),
> - PLL_RATE(624000000, 52, 1, 1),
> - PLL_RATE(636000000, 53, 1, 1),
> - PLL_RATE(648000000, 54, 1, 1),
> - PLL_RATE(660000000, 55, 1, 1),
> - PLL_RATE(672000000, 56, 1, 1),
> - PLL_RATE(684000000, 57, 1, 1),
> - PLL_RATE(696000000, 58, 1, 1),
> - PLL_RATE(708000000, 59, 1, 1),
> - PLL_RATE(720000000, 60, 1, 1),
> - PLL_RATE(732000000, 61, 1, 1),
> - PLL_RATE(744000000, 62, 1, 1),
> - PLL_RATE(756000000, 63, 1, 1),
> - PLL_RATE(768000000, 64, 1, 1),
> - PLL_RATE(780000000, 65, 1, 1),
> - PLL_RATE(792000000, 66, 1, 1),
> - PLL_RATE(804000000, 67, 1, 1),
> - PLL_RATE(816000000, 68, 1, 1),
> - PLL_RATE(960000000, 40, 1, 0),
> - PLL_RATE(984000000, 41, 1, 0),
> - PLL_RATE(1008000000, 42, 1, 0),
> - PLL_RATE(1032000000, 43, 1, 0),
> - PLL_RATE(1056000000, 44, 1, 0),
> - PLL_RATE(1080000000, 45, 1, 0),
> - PLL_RATE(1104000000, 46, 1, 0),
> - PLL_RATE(1128000000, 47, 1, 0),
> - PLL_RATE(1152000000, 48, 1, 0),
> - PLL_RATE(1176000000, 49, 1, 0),
> - PLL_RATE(1200000000, 50, 1, 0),
> - PLL_RATE(1224000000, 51, 1, 0),
> - PLL_RATE(1248000000, 52, 1, 0),
> - PLL_RATE(1272000000, 53, 1, 0),
> - PLL_RATE(1296000000, 54, 1, 0),
> - PLL_RATE(1320000000, 55, 1, 0),
> - PLL_RATE(1344000000, 56, 1, 0),
> - PLL_RATE(1368000000, 57, 1, 0),
> - PLL_RATE(1392000000, 58, 1, 0),
> - PLL_RATE(1416000000, 59, 1, 0),
> - PLL_RATE(1440000000, 60, 1, 0),
> - PLL_RATE(1464000000, 61, 1, 0),
> - PLL_RATE(1488000000, 62, 1, 0),
> - PLL_RATE(1512000000, 63, 1, 0),
> - PLL_RATE(1536000000, 64, 1, 0),
> - PLL_RATE(1560000000, 65, 1, 0),
> - PLL_RATE(1584000000, 66, 1, 0),
> - PLL_RATE(1608000000, 67, 1, 0),
> - PLL_RATE(1632000000, 68, 1, 0),
> + PLL_RATE(960000000, 40, 1),
> + PLL_RATE(984000000, 41, 1),
> + PLL_RATE(1008000000, 42, 1),
> + PLL_RATE(1032000000, 43, 1),
> + PLL_RATE(1056000000, 44, 1),
> + PLL_RATE(1080000000, 45, 1),
> + PLL_RATE(1104000000, 46, 1),
> + PLL_RATE(1128000000, 47, 1),
> + PLL_RATE(1152000000, 48, 1),
> + PLL_RATE(1176000000, 49, 1),
> + PLL_RATE(1200000000, 50, 1),
> + PLL_RATE(1224000000, 51, 1),
> + PLL_RATE(1248000000, 52, 1),
> + PLL_RATE(1272000000, 53, 1),
> + PLL_RATE(1296000000, 54, 1),
> + PLL_RATE(1320000000, 55, 1),
> + PLL_RATE(1344000000, 56, 1),
> + PLL_RATE(1368000000, 57, 1),
> + PLL_RATE(1392000000, 58, 1),
> + PLL_RATE(1416000000, 59, 1),
> + PLL_RATE(1440000000, 60, 1),
> + PLL_RATE(1464000000, 61, 1),
> + PLL_RATE(1488000000, 62, 1),
> + PLL_RATE(1512000000, 63, 1),
> + PLL_RATE(1536000000, 64, 1),
> + PLL_RATE(1560000000, 65, 1),
> + PLL_RATE(1584000000, 66, 1),
> + PLL_RATE(1608000000, 67, 1),
> + PLL_RATE(1632000000, 68, 1),
> { /* sentinel */ },
> };
>
> @@ -209,7 +171,7 @@ static const struct reg_sequence axg_gp0_init_regs[] = {
> { .reg = HHI_GP0_PLL_CNTL5, .def = 0x00078000 },
> };
>
> -static struct clk_regmap axg_gp0_pll = {
> +static struct clk_regmap axg_gp0_pll_dco = {
> .data = &(struct meson_clk_pll_data){
> .en = {
> .reg_off = HHI_GP0_PLL_CNTL,
> @@ -226,11 +188,6 @@ static struct clk_regmap axg_gp0_pll = {
> .shift = 9,
> .width = 5,
> },
> - .od = {
> - .reg_off = HHI_GP0_PLL_CNTL,
> - .shift = 16,
> - .width = 2,
> - },
> .frac = {
> .reg_off = HHI_GP0_PLL_CNTL1,
> .shift = 0,
> @@ -251,13 +208,29 @@ static struct clk_regmap axg_gp0_pll = {
> .init_count = ARRAY_SIZE(axg_gp0_init_regs),
> },
> .hw.init = &(struct clk_init_data){
> - .name = "gp0_pll",
> + .name = "gp0_pll_dco",
> .ops = &meson_clk_pll_ops,
> .parent_names = (const char *[]){ "xtal" },
> .num_parents = 1,
> },
> };
>
> +static struct clk_regmap axg_gp0_pll = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_GP0_PLL_CNTL,
> + .shift = 16,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "gp0_pll",
> + .ops = &clk_regmap_divider_ops,
> + .parent_names = (const char *[]){ "gp0_pll_dco" },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + },
> +};
> +
> static const struct reg_sequence axg_hifi_init_regs[] = {
> { .reg = HHI_HIFI_PLL_CNTL1, .def = 0xc084b000 },
> { .reg = HHI_HIFI_PLL_CNTL2, .def = 0xb75020be },
> @@ -266,7 +239,7 @@ static const struct reg_sequence axg_hifi_init_regs[] = {
> { .reg = HHI_HIFI_PLL_CNTL5, .def = 0x00058000 },
> };
>
> -static struct clk_regmap axg_hifi_pll = {
> +static struct clk_regmap axg_hifi_pll_dco = {
> .data = &(struct meson_clk_pll_data){
> .en = {
> .reg_off = HHI_HIFI_PLL_CNTL,
> @@ -283,11 +256,6 @@ static struct clk_regmap axg_hifi_pll = {
> .shift = 9,
> .width = 5,
> },
> - .od = {
> - .reg_off = HHI_HIFI_PLL_CNTL,
> - .shift = 16,
> - .width = 2,
> - },
> .frac = {
> .reg_off = HHI_HIFI_PLL_CNTL5,
> .shift = 0,
> @@ -309,13 +277,29 @@ static struct clk_regmap axg_hifi_pll = {
> .flags = CLK_MESON_PLL_ROUND_CLOSEST,
> },
> .hw.init = &(struct clk_init_data){
> - .name = "hifi_pll",
> + .name = "hifi_pll_dco",
> .ops = &meson_clk_pll_ops,
> .parent_names = (const char *[]){ "xtal" },
> .num_parents = 1,
> },
> };
>
> +static struct clk_regmap axg_hifi_pll = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_HIFI_PLL_CNTL,
> + .shift = 16,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "hifi_pll",
> + .ops = &clk_regmap_divider_ops,
> + .parent_names = (const char *[]){ "hifi_pll_dco" },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + },
> +};
> +
> static struct clk_fixed_factor axg_fclk_div2_div = {
> .mult = 1,
> .div = 2,
> @@ -645,11 +629,9 @@ static struct clk_regmap axg_mpll3 = {
>
> static const struct pll_rate_table axg_pcie_pll_rate_table[] = {
> {
> - .rate = 100000000,
> + .rate = 1600000000,
> .m = 200,
> .n = 3,
> - .od = 1,
> - .od2 = 3,
> },
> { /* sentinel */ },
> };
> @@ -661,9 +643,10 @@ static const struct reg_sequence axg_pcie_init_regs[] = {
> { .reg = HHI_PCIE_PLL_CNTL4, .def = 0xc000004d },
> { .reg = HHI_PCIE_PLL_CNTL5, .def = 0x00078000 },
> { .reg = HHI_PCIE_PLL_CNTL6, .def = 0x002323c6 },
> + { .reg = HHI_PCIE_PLL_CNTL, .def = 0x400106c8 },
> };
>
> -static struct clk_regmap axg_pcie_pll = {
> +static struct clk_regmap axg_pcie_pll_dco = {
> .data = &(struct meson_clk_pll_data){
> .en = {
> .reg_off = HHI_PCIE_PLL_CNTL,
> @@ -680,16 +663,6 @@ static struct clk_regmap axg_pcie_pll = {
> .shift = 9,
> .width = 5,
> },
> - .od = {
> - .reg_off = HHI_PCIE_PLL_CNTL,
> - .shift = 16,
> - .width = 2,
> - },
> - .od2 = {
> - .reg_off = HHI_PCIE_PLL_CNTL6,
> - .shift = 6,
> - .width = 2,
> - },
> .frac = {
> .reg_off = HHI_PCIE_PLL_CNTL1,
> .shift = 0,
> @@ -710,13 +683,45 @@ static struct clk_regmap axg_pcie_pll = {
> .init_count = ARRAY_SIZE(axg_pcie_init_regs),
> },
> .hw.init = &(struct clk_init_data){
> - .name = "pcie_pll",
> + .name = "pcie_pll_dco",
> .ops = &meson_clk_pll_ops,
> .parent_names = (const char *[]){ "xtal" },
> .num_parents = 1,
> },
> };
>
> +static struct clk_regmap axg_pcie_pll_od = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_PCIE_PLL_CNTL,
> + .shift = 16,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "pcie_pll_od",
> + .ops = &clk_regmap_divider_ops,
> + .parent_names = (const char *[]){ "pcie_pll_dco" },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + },
> +};
> +
> +static struct clk_regmap axg_pcie_pll = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_PCIE_PLL_CNTL6,
> + .shift = 6,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "pcie_pll",
> + .ops = &clk_regmap_divider_ops,
> + .parent_names = (const char *[]){ "pcie_pll_od" },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + },
> +};
> +
> static struct clk_regmap axg_pcie_mux = {
> .data = &(struct clk_regmap_mux_data){
> .offset = HHI_PCIE_PLL_CNTL6,
> @@ -1129,6 +1134,12 @@ static struct clk_hw_onecell_data axg_hw_onecell_data = {
> [CLKID_GEN_CLK_SEL] = &axg_gen_clk_sel.hw,
> [CLKID_GEN_CLK_DIV] = &axg_gen_clk_div.hw,
> [CLKID_GEN_CLK] = &axg_gen_clk.hw,
> + [CLKID_SYS_PLL_DCO] = &axg_sys_pll_dco.hw,
> + [CLKID_FIXED_PLL_DCO] = &axg_fixed_pll_dco.hw,
> + [CLKID_GP0_PLL_DCO] = &axg_gp0_pll_dco.hw,
> + [CLKID_HIFI_PLL_DCO] = &axg_hifi_pll_dco.hw,
> + [CLKID_PCIE_PLL_DCO] = &axg_pcie_pll_dco.hw,
> + [CLKID_PCIE_PLL_OD] = &axg_pcie_pll_od.hw,
> [NR_CLKS] = NULL,
> },
> .num = NR_CLKS,
> @@ -1207,6 +1218,8 @@ static struct clk_regmap *const axg_clk_regmaps[] = {
> &axg_fclk_div4,
> &axg_fclk_div5,
> &axg_fclk_div7,
> + &axg_pcie_pll_dco,
> + &axg_pcie_pll_od,
> &axg_pcie_pll,
> &axg_pcie_mux,
> &axg_pcie_ref,
> @@ -1216,6 +1229,12 @@ static struct clk_regmap *const axg_clk_regmaps[] = {
> &axg_gen_clk_sel,
> &axg_gen_clk_div,
> &axg_gen_clk,
> + &axg_fixed_pll_dco,
> + &axg_sys_pll_dco,
> + &axg_gp0_pll_dco,
> + &axg_hifi_pll_dco,
> + &axg_pcie_pll_dco,
> + &axg_pcie_pll_od,
> };
>
> static const struct of_device_id clkc_match_table[] = {
> diff --git a/drivers/clk/meson/axg.h b/drivers/clk/meson/axg.h
> index 1d04144a1b2c..0431dabac629 100644
> --- a/drivers/clk/meson/axg.h
> +++ b/drivers/clk/meson/axg.h
> @@ -133,8 +133,14 @@
> #define CLKID_PCIE_REF 78
> #define CLKID_GEN_CLK_SEL 82
> #define CLKID_GEN_CLK_DIV 83
> +#define CLKID_SYS_PLL_DCO 85
> +#define CLKID_FIXED_PLL_DCO 86
> +#define CLKID_GP0_PLL_DCO 87
> +#define CLKID_HIFI_PLL_DCO 88
> +#define CLKID_PCIE_PLL_DCO 89
> +#define CLKID_PCIE_PLL_OD 90
>
> -#define NR_CLKS 85
> +#define NR_CLKS 91
>
> /* include the CLKIDs that have been made part of the DT binding */
> #include <dt-bindings/clock/axg-clkc.h>
> diff --git a/drivers/clk/meson/clk-pll.c b/drivers/clk/meson/clk-pll.c
> index 8aaefe67025f..348a866f09eb 100644
> --- a/drivers/clk/meson/clk-pll.c
> +++ b/drivers/clk/meson/clk-pll.c
> @@ -11,15 +11,19 @@
> * In the most basic form, a Meson PLL is composed as follows:
> *
> * PLL
> - * +------------------------------+
> - * | |
> - * in -----[ /N ]---[ *M ]---[ >>OD ]----->> out
> - * | ^ ^ |
> - * +------------------------------+
> - * | |
> - * FREF VCO
> + * +--------------------------------+
> + * | |
> + * | +--+ |
> + * in >>-----[ /N ]--->| | +-----+ |
> + * | | |------| DCO |---->> out
> + * | +--------->| | +--v--+ |
> + * | | +--+ | |
> + * | | | |
> + * | +--[ *(M + (F/Fmax) ]<--+ |
> + * | |
> + * +--------------------------------+
> *
> - * out = in * (m + frac / frac_max) / (n << sum(ods))
> + * out = in * (m + frac / frac_max) / n
> */
>
> #include <linux/clk-provider.h>
> @@ -46,7 +50,6 @@ static unsigned long __pll_params_to_rate(unsigned long parent_rate,
> struct meson_clk_pll_data *pll)
> {
> u64 rate = (u64)parent_rate * pllt->m;
> - unsigned int od = pllt->od + pllt->od2 + pllt->od3;
>
> if (frac && MESON_PARM_APPLICABLE(&pll->frac)) {
> u64 frac_rate = (u64)parent_rate * frac;
> @@ -55,7 +58,7 @@ static unsigned long __pll_params_to_rate(unsigned long parent_rate,
> (1 << pll->frac.width));
> }
>
> - return DIV_ROUND_UP_ULL(rate, pllt->n << od);
> + return DIV_ROUND_UP_ULL(rate, pllt->n);
> }
>
> static unsigned long meson_clk_pll_recalc_rate(struct clk_hw *hw,
> @@ -68,15 +71,6 @@ static unsigned long meson_clk_pll_recalc_rate(struct clk_hw *hw,
>
> pllt.n = meson_parm_read(clk->map, &pll->n);
> pllt.m = meson_parm_read(clk->map, &pll->m);
> - pllt.od = meson_parm_read(clk->map, &pll->od);
> -
> - pllt.od2 = MESON_PARM_APPLICABLE(&pll->od2) ?
> - meson_parm_read(clk->map, &pll->od2) :
> - 0;
> -
> - pllt.od3 = MESON_PARM_APPLICABLE(&pll->od3) ?
> - meson_parm_read(clk->map, &pll->od3) :
> - 0;
>
> frac = MESON_PARM_APPLICABLE(&pll->frac) ?
> meson_parm_read(clk->map, &pll->frac) :
> @@ -93,8 +87,6 @@ static u16 __pll_params_with_frac(unsigned long rate,
> u16 frac_max = (1 << pll->frac.width);
> u64 val = (u64)rate * pllt->n;
>
> - val <<= pllt->od + pllt->od2 + pllt->od3;
> -
> if (pll->flags & CLK_MESON_PLL_ROUND_CLOSEST)
> val = DIV_ROUND_CLOSEST_ULL(val * frac_max, parent_rate);
> else
> @@ -242,13 +234,7 @@ static int meson_clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
>
> meson_parm_write(clk->map, &pll->n, pllt->n);
> meson_parm_write(clk->map, &pll->m, pllt->m);
> - meson_parm_write(clk->map, &pll->od, pllt->od);
> -
> - if (MESON_PARM_APPLICABLE(&pll->od2))
> - meson_parm_write(clk->map, &pll->od2, pllt->od2);
>
> - if (MESON_PARM_APPLICABLE(&pll->od3))
> - meson_parm_write(clk->map, &pll->od3, pllt->od3);
>
> if (MESON_PARM_APPLICABLE(&pll->frac)) {
> frac = __pll_params_with_frac(rate, parent_rate, pllt, pll);
> diff --git a/drivers/clk/meson/clkc.h b/drivers/clk/meson/clkc.h
> index c2ee37a78ceb..a2245e857f70 100644
> --- a/drivers/clk/meson/clkc.h
> +++ b/drivers/clk/meson/clkc.h
> @@ -47,17 +47,13 @@ struct pll_rate_table {
> unsigned long rate;
> u16 m;
> u16 n;
> - u16 od;
> - u16 od2;
> - u16 od3;
> };
>
> -#define PLL_RATE(_r, _m, _n, _od) \
> +#define PLL_RATE(_r, _m, _n) \
> { \
> .rate = (_r), \
> .m = (_m), \
> .n = (_n), \
> - .od = (_od), \
> }
>
> #define CLK_MESON_PLL_ROUND_CLOSEST BIT(0)
> @@ -67,9 +63,6 @@ struct meson_clk_pll_data {
> struct parm m;
> struct parm n;
> struct parm frac;
> - struct parm od;
> - struct parm od2;
> - struct parm od3;
> struct parm l;
> struct parm rst;
> const struct reg_sequence *init_regs;
> diff --git a/drivers/clk/meson/gxbb.c b/drivers/clk/meson/gxbb.c
> index 5ed34566917c..e2d94498f098 100644
> --- a/drivers/clk/meson/gxbb.c
> +++ b/drivers/clk/meson/gxbb.c
> @@ -19,163 +19,70 @@
> static DEFINE_SPINLOCK(meson_clk_lock);
>
> static const struct pll_rate_table gxbb_gp0_pll_rate_table[] = {
> - PLL_RATE(96000000, 32, 1, 3),
> - PLL_RATE(99000000, 33, 1, 3),
> - PLL_RATE(102000000, 34, 1, 3),
> - PLL_RATE(105000000, 35, 1, 3),
> - PLL_RATE(108000000, 36, 1, 3),
> - PLL_RATE(111000000, 37, 1, 3),
> - PLL_RATE(114000000, 38, 1, 3),
> - PLL_RATE(117000000, 39, 1, 3),
> - PLL_RATE(120000000, 40, 1, 3),
> - PLL_RATE(123000000, 41, 1, 3),
> - PLL_RATE(126000000, 42, 1, 3),
> - PLL_RATE(129000000, 43, 1, 3),
> - PLL_RATE(132000000, 44, 1, 3),
> - PLL_RATE(135000000, 45, 1, 3),
> - PLL_RATE(138000000, 46, 1, 3),
> - PLL_RATE(141000000, 47, 1, 3),
> - PLL_RATE(144000000, 48, 1, 3),
> - PLL_RATE(147000000, 49, 1, 3),
> - PLL_RATE(150000000, 50, 1, 3),
> - PLL_RATE(153000000, 51, 1, 3),
> - PLL_RATE(156000000, 52, 1, 3),
> - PLL_RATE(159000000, 53, 1, 3),
> - PLL_RATE(162000000, 54, 1, 3),
> - PLL_RATE(165000000, 55, 1, 3),
> - PLL_RATE(168000000, 56, 1, 3),
> - PLL_RATE(171000000, 57, 1, 3),
> - PLL_RATE(174000000, 58, 1, 3),
> - PLL_RATE(177000000, 59, 1, 3),
> - PLL_RATE(180000000, 60, 1, 3),
> - PLL_RATE(183000000, 61, 1, 3),
> - PLL_RATE(186000000, 62, 1, 3),
> - PLL_RATE(192000000, 32, 1, 2),
> - PLL_RATE(198000000, 33, 1, 2),
> - PLL_RATE(204000000, 34, 1, 2),
> - PLL_RATE(210000000, 35, 1, 2),
> - PLL_RATE(216000000, 36, 1, 2),
> - PLL_RATE(222000000, 37, 1, 2),
> - PLL_RATE(228000000, 38, 1, 2),
> - PLL_RATE(234000000, 39, 1, 2),
> - PLL_RATE(240000000, 40, 1, 2),
> - PLL_RATE(246000000, 41, 1, 2),
> - PLL_RATE(252000000, 42, 1, 2),
> - PLL_RATE(258000000, 43, 1, 2),
> - PLL_RATE(264000000, 44, 1, 2),
> - PLL_RATE(270000000, 45, 1, 2),
> - PLL_RATE(276000000, 46, 1, 2),
> - PLL_RATE(282000000, 47, 1, 2),
> - PLL_RATE(288000000, 48, 1, 2),
> - PLL_RATE(294000000, 49, 1, 2),
> - PLL_RATE(300000000, 50, 1, 2),
> - PLL_RATE(306000000, 51, 1, 2),
> - PLL_RATE(312000000, 52, 1, 2),
> - PLL_RATE(318000000, 53, 1, 2),
> - PLL_RATE(324000000, 54, 1, 2),
> - PLL_RATE(330000000, 55, 1, 2),
> - PLL_RATE(336000000, 56, 1, 2),
> - PLL_RATE(342000000, 57, 1, 2),
> - PLL_RATE(348000000, 58, 1, 2),
> - PLL_RATE(354000000, 59, 1, 2),
> - PLL_RATE(360000000, 60, 1, 2),
> - PLL_RATE(366000000, 61, 1, 2),
> - PLL_RATE(372000000, 62, 1, 2),
> - PLL_RATE(384000000, 32, 1, 1),
> - PLL_RATE(396000000, 33, 1, 1),
> - PLL_RATE(408000000, 34, 1, 1),
> - PLL_RATE(420000000, 35, 1, 1),
> - PLL_RATE(432000000, 36, 1, 1),
> - PLL_RATE(444000000, 37, 1, 1),
> - PLL_RATE(456000000, 38, 1, 1),
> - PLL_RATE(468000000, 39, 1, 1),
> - PLL_RATE(480000000, 40, 1, 1),
> - PLL_RATE(492000000, 41, 1, 1),
> - PLL_RATE(504000000, 42, 1, 1),
> - PLL_RATE(516000000, 43, 1, 1),
> - PLL_RATE(528000000, 44, 1, 1),
> - PLL_RATE(540000000, 45, 1, 1),
> - PLL_RATE(552000000, 46, 1, 1),
> - PLL_RATE(564000000, 47, 1, 1),
> - PLL_RATE(576000000, 48, 1, 1),
> - PLL_RATE(588000000, 49, 1, 1),
> - PLL_RATE(600000000, 50, 1, 1),
> - PLL_RATE(612000000, 51, 1, 1),
> - PLL_RATE(624000000, 52, 1, 1),
> - PLL_RATE(636000000, 53, 1, 1),
> - PLL_RATE(648000000, 54, 1, 1),
> - PLL_RATE(660000000, 55, 1, 1),
> - PLL_RATE(672000000, 56, 1, 1),
> - PLL_RATE(684000000, 57, 1, 1),
> - PLL_RATE(696000000, 58, 1, 1),
> - PLL_RATE(708000000, 59, 1, 1),
> - PLL_RATE(720000000, 60, 1, 1),
> - PLL_RATE(732000000, 61, 1, 1),
> - PLL_RATE(744000000, 62, 1, 1),
> - PLL_RATE(768000000, 32, 1, 0),
> - PLL_RATE(792000000, 33, 1, 0),
> - PLL_RATE(816000000, 34, 1, 0),
> - PLL_RATE(840000000, 35, 1, 0),
> - PLL_RATE(864000000, 36, 1, 0),
> - PLL_RATE(888000000, 37, 1, 0),
> - PLL_RATE(912000000, 38, 1, 0),
> - PLL_RATE(936000000, 39, 1, 0),
> - PLL_RATE(960000000, 40, 1, 0),
> - PLL_RATE(984000000, 41, 1, 0),
> - PLL_RATE(1008000000, 42, 1, 0),
> - PLL_RATE(1032000000, 43, 1, 0),
> - PLL_RATE(1056000000, 44, 1, 0),
> - PLL_RATE(1080000000, 45, 1, 0),
> - PLL_RATE(1104000000, 46, 1, 0),
> - PLL_RATE(1128000000, 47, 1, 0),
> - PLL_RATE(1152000000, 48, 1, 0),
> - PLL_RATE(1176000000, 49, 1, 0),
> - PLL_RATE(1200000000, 50, 1, 0),
> - PLL_RATE(1224000000, 51, 1, 0),
> - PLL_RATE(1248000000, 52, 1, 0),
> - PLL_RATE(1272000000, 53, 1, 0),
> - PLL_RATE(1296000000, 54, 1, 0),
> - PLL_RATE(1320000000, 55, 1, 0),
> - PLL_RATE(1344000000, 56, 1, 0),
> - PLL_RATE(1368000000, 57, 1, 0),
> - PLL_RATE(1392000000, 58, 1, 0),
> - PLL_RATE(1416000000, 59, 1, 0),
> - PLL_RATE(1440000000, 60, 1, 0),
> - PLL_RATE(1464000000, 61, 1, 0),
> - PLL_RATE(1488000000, 62, 1, 0),
> + PLL_RATE(768000000, 32, 1),
> + PLL_RATE(792000000, 33, 1),
> + PLL_RATE(816000000, 34, 1),
> + PLL_RATE(840000000, 35, 1),
> + PLL_RATE(864000000, 36, 1),
> + PLL_RATE(888000000, 37, 1),
> + PLL_RATE(912000000, 38, 1),
> + PLL_RATE(936000000, 39, 1),
> + PLL_RATE(960000000, 40, 1),
> + PLL_RATE(984000000, 41, 1),
> + PLL_RATE(1008000000, 42, 1),
> + PLL_RATE(1032000000, 43, 1),
> + PLL_RATE(1056000000, 44, 1),
> + PLL_RATE(1080000000, 45, 1),
> + PLL_RATE(1104000000, 46, 1),
> + PLL_RATE(1128000000, 47, 1),
> + PLL_RATE(1152000000, 48, 1),
> + PLL_RATE(1176000000, 49, 1),
> + PLL_RATE(1200000000, 50, 1),
> + PLL_RATE(1224000000, 51, 1),
> + PLL_RATE(1248000000, 52, 1),
> + PLL_RATE(1272000000, 53, 1),
> + PLL_RATE(1296000000, 54, 1),
> + PLL_RATE(1320000000, 55, 1),
> + PLL_RATE(1344000000, 56, 1),
> + PLL_RATE(1368000000, 57, 1),
> + PLL_RATE(1392000000, 58, 1),
> + PLL_RATE(1416000000, 59, 1),
> + PLL_RATE(1440000000, 60, 1),
> + PLL_RATE(1464000000, 61, 1),
> + PLL_RATE(1488000000, 62, 1),
> { /* sentinel */ },
> };
>
> static const struct pll_rate_table gxl_gp0_pll_rate_table[] = {
> - PLL_RATE(504000000, 42, 1, 1),
> - PLL_RATE(516000000, 43, 1, 1),
> - PLL_RATE(528000000, 44, 1, 1),
> - PLL_RATE(540000000, 45, 1, 1),
> - PLL_RATE(552000000, 46, 1, 1),
> - PLL_RATE(564000000, 47, 1, 1),
> - PLL_RATE(576000000, 48, 1, 1),
> - PLL_RATE(588000000, 49, 1, 1),
> - PLL_RATE(600000000, 50, 1, 1),
> - PLL_RATE(612000000, 51, 1, 1),
> - PLL_RATE(624000000, 52, 1, 1),
> - PLL_RATE(636000000, 53, 1, 1),
> - PLL_RATE(648000000, 54, 1, 1),
> - PLL_RATE(660000000, 55, 1, 1),
> - PLL_RATE(672000000, 56, 1, 1),
> - PLL_RATE(684000000, 57, 1, 1),
> - PLL_RATE(696000000, 58, 1, 1),
> - PLL_RATE(708000000, 59, 1, 1),
> - PLL_RATE(720000000, 60, 1, 1),
> - PLL_RATE(732000000, 61, 1, 1),
> - PLL_RATE(744000000, 62, 1, 1),
> - PLL_RATE(756000000, 63, 1, 1),
> - PLL_RATE(768000000, 64, 1, 1),
> - PLL_RATE(780000000, 65, 1, 1),
> - PLL_RATE(792000000, 66, 1, 1),
> + PLL_RATE(1008000000, 42, 1),
> + PLL_RATE(1032000000, 43, 1),
> + PLL_RATE(1056000000, 44, 1),
> + PLL_RATE(1080000000, 45, 1),
> + PLL_RATE(1104000000, 46, 1),
> + PLL_RATE(1128000000, 47, 1),
> + PLL_RATE(1152000000, 48, 1),
> + PLL_RATE(1176000000, 49, 1),
> + PLL_RATE(1200000000, 50, 1),
> + PLL_RATE(1224000000, 51, 1),
> + PLL_RATE(1248000000, 52, 1),
> + PLL_RATE(1272000000, 53, 1),
> + PLL_RATE(1296000000, 54, 1),
> + PLL_RATE(1320000000, 55, 1),
> + PLL_RATE(1344000000, 56, 1),
> + PLL_RATE(1368000000, 57, 1),
> + PLL_RATE(1392000000, 58, 1),
> + PLL_RATE(1416000000, 59, 1),
> + PLL_RATE(1440000000, 60, 1),
> + PLL_RATE(1464000000, 61, 1),
> + PLL_RATE(1488000000, 62, 1),
> + PLL_RATE(1512000000, 63, 1),
> + PLL_RATE(1536000000, 64, 1),
> + PLL_RATE(1560000000, 65, 1),
> + PLL_RATE(1584000000, 66, 1),
> { /* sentinel */ },
> };
>
> -static struct clk_regmap gxbb_fixed_pll = {
> +static struct clk_regmap gxbb_fixed_pll_dco = {
> .data = &(struct meson_clk_pll_data){
> .en = {
> .reg_off = HHI_MPLL_CNTL,
> @@ -192,11 +99,6 @@ static struct clk_regmap gxbb_fixed_pll = {
> .shift = 9,
> .width = 5,
> },
> - .od = {
> - .reg_off = HHI_MPLL_CNTL,
> - .shift = 16,
> - .width = 2,
> - },
> .frac = {
> .reg_off = HHI_MPLL_CNTL2,
> .shift = 0,
> @@ -214,7 +116,7 @@ static struct clk_regmap gxbb_fixed_pll = {
> },
> },
> .hw.init = &(struct clk_init_data){
> - .name = "fixed_pll",
> + .name = "fixed_pll_dco",
> .ops = &meson_clk_pll_ro_ops,
> .parent_names = (const char *[]){ "xtal" },
> .num_parents = 1,
> @@ -222,6 +124,21 @@ static struct clk_regmap gxbb_fixed_pll = {
> },
> };
>
> +static struct clk_regmap gxbb_fixed_pll = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_MPLL_CNTL,
> + .shift = 16,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "fixed_pll",
> + .ops = &clk_regmap_divider_ro_ops,
> + .parent_names = (const char *[]){ "fixed_pll_dco" },
> + .num_parents = 1,
> + },
> +};
> +
> static struct clk_fixed_factor gxbb_hdmi_pll_pre_mult = {
> .mult = 2,
> .div = 1,
> @@ -233,7 +150,7 @@ static struct clk_fixed_factor gxbb_hdmi_pll_pre_mult = {
> },
> };
>
> -static struct clk_regmap gxbb_hdmi_pll = {
> +static struct clk_regmap gxbb_hdmi_pll_dco = {
> .data = &(struct meson_clk_pll_data){
> .en = {
> .reg_off = HHI_HDMI_PLL_CNTL,
> @@ -255,21 +172,6 @@ static struct clk_regmap gxbb_hdmi_pll = {
> .shift = 0,
> .width = 12,
> },
> - .od = {
> - .reg_off = HHI_HDMI_PLL_CNTL2,
> - .shift = 16,
> - .width = 2,
> - },
> - .od2 = {
> - .reg_off = HHI_HDMI_PLL_CNTL2,
> - .shift = 22,
> - .width = 2,
> - },
> - .od3 = {
> - .reg_off = HHI_HDMI_PLL_CNTL2,
> - .shift = 18,
> - .width = 2,
> - },
> .l = {
> .reg_off = HHI_HDMI_PLL_CNTL,
> .shift = 31,
> @@ -282,7 +184,7 @@ static struct clk_regmap gxbb_hdmi_pll = {
> },
> },
> .hw.init = &(struct clk_init_data){
> - .name = "hdmi_pll",
> + .name = "hdmi_pll_dco",
> .ops = &meson_clk_pll_ro_ops,
> .parent_names = (const char *[]){ "hdmi_pll_pre_mult" },
> .num_parents = 1,
> @@ -290,70 +192,103 @@ static struct clk_regmap gxbb_hdmi_pll = {
> },
> };
>
> +static struct clk_regmap gxbb_hdmi_pll_od = {
> + .data = &(struct clk_regmap_div_data){
> + .offset = HHI_HDMI_PLL_CNTL2,
> + .shift = 16,
> + .width = 2,
> + .flags = CLK_DIVIDER_POWER_OF_TWO,
> + },
> + .hw.init = &(struct clk_init_data){
> + .name = "hdmi_pll_od",
> + .ops = &clk_regmap_divider_ro_ops,
> + .parent_names = (const char *[]){ "hdmi_pll_dco" },
> + .num_parents = 1,
> + .flags = CLK_GET_RATE_NOCACHE,
why do we need CLK_GET_RATE_NOCACHE here?
also, shouldn't all _od clocks use CLK_SET_RATE_PARENT?
(this applies to all new _od clocks, not just this one)
Regards
Martin
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