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Message-ID: <aa6a06a6-7b3e-4598-ab3b-5fa9ecb93aaa@amlogic.com>
Date: Wed, 15 Nov 2023 16:00:40 +0800
From: Xianwei Zhao <xianwei.zhao@...ogic.com>
To: Jerome Brunet <jbrunet@...libre.com>,
linux-arm-kernel@...ts.infradead.org,
linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Neil Armstrong <neil.armstrong@...aro.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Kevin Hilman <khilman@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Chuan Liu <chuan.liu@...ogic.com>
Subject: Re: [PATCH V6 3/4] clk: meson: c3: add support for the C3 SoC PLL
clock
Hi Jerome,
Thanks for your reply.
On 2023/11/14 18:25, Jerome Brunet wrote:
> [ EXTERNAL EMAIL ]
>
> On Mon 06 Nov 2023 at 16:55, Xianwei Zhao <xianwei.zhao@...ogic.com> wrote:
>
>> Add the C3 PLL clock controller driver for the Amlogic C3 SoC family.
>>
>> Co-developed-by: Chuan Liu <chuan.liu@...ogic.com>
>> Signed-off-by: Chuan Liu <chuan.liu@...ogic.com>
>> Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
>
> Just a few things to address
>
>> ---
>> drivers/clk/meson/Kconfig | 13 +
>> drivers/clk/meson/Makefile | 1 +
>> drivers/clk/meson/c3-pll.c | 895 +++++++++++++++++++++++++++++++++++++
>> 3 files changed, 909 insertions(+)
>> create mode 100644 drivers/clk/meson/c3-pll.c
>>
>> diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig
>> index c5303e4c1604..eab796f3d25b 100644
>> --- a/drivers/clk/meson/Kconfig
>> +++ b/drivers/clk/meson/Kconfig
>> @@ -128,6 +128,19 @@ config COMMON_CLK_A1_PERIPHERALS
>> device, A1 SoC Family. Say Y if you want A1 Peripherals clock
>> controller to work.
>>
>> +config COMMON_CLK_C3_PLL
>> + tristate "Amlogic C3 PLL clock controller"
>> + depends on ARM64
>> + default y
>> + select COMMON_CLK_MESON_REGMAP
>> + select COMMON_CLK_MESON_PLL
>> + select COMMON_CLK_MESON_CLKC_UTILS
>> + help
>> + Support for the PLL clock controller on Amlogic C302X and C308L devices,
>> + AKA c3. Amlogic C302X and C308L devices include AW402 and the others.
>> + Say Y if you want the board to work, because PLLs are the parent of most
>> + peripherals.
>> +
>> config COMMON_CLK_G12A
>> tristate "G12 and SM1 SoC clock controllers support"
>> depends on ARM64
>> diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile
>> index 9ee4b954c896..4420af628b31 100644
>> --- a/drivers/clk/meson/Makefile
>> +++ b/drivers/clk/meson/Makefile
>> @@ -19,6 +19,7 @@ obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o
>> obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o
>> obj-$(CONFIG_COMMON_CLK_A1_PLL) += a1-pll.o
>> obj-$(CONFIG_COMMON_CLK_A1_PERIPHERALS) += a1-peripherals.o
>> +obj-$(CONFIG_COMMON_CLK_C3_PLL) += c3-pll.o
>> obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o
>> obj-$(CONFIG_COMMON_CLK_G12A) += g12a.o g12a-aoclk.o
>> obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o meson8-ddr.o
>> diff --git a/drivers/clk/meson/c3-pll.c b/drivers/clk/meson/c3-pll.c
>> new file mode 100644
>> index 000000000000..b663666e3755
>> --- /dev/null
>> +++ b/drivers/clk/meson/c3-pll.c
>> @@ -0,0 +1,895 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
>> +/*
>> + * Amlogic C3 PLL Controller Driver
>> + *
>> + * Copyright (c) 2023 Amlogic, inc.
>> + * Author: Chuan Liu <chuan.liu@...ogic.com>
>> + */
>> +
>> +#include <linux/clk-provider.h>
>> +#include <linux/of_device.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/clk.h>
>
> What do you need that for ? you are not the using the clock consumer api.
Indeed not use, will delete it.
>
>> +#include "clk-regmap.h"
>> +#include "clk-pll.h"
>> +#include "meson-clkc-utils.h"
>> +#include <dt-bindings/clock/amlogic,c3-pll-clkc.h>
>> +
>> +#define ANACTRL_FIXPLL_CTRL0 0x40
>> +#define ANACTRL_FIXPLL_CTRL4 0x50
>> +#define ANACTRL_GP0PLL_CTRL0 0x80
>> +#define ANACTRL_GP0PLL_CTRL1 0x84
>> +#define ANACTRL_GP0PLL_CTRL2 0x88
>> +#define ANACTRL_GP0PLL_CTRL3 0x8c
>> +#define ANACTRL_GP0PLL_CTRL4 0x90
>> +#define ANACTRL_GP0PLL_CTRL5 0x94
>> +#define ANACTRL_GP0PLL_CTRL6 0x98
>> +#define ANACTRL_GP0PLL_STS 0x9c
>> +#define ANACTRL_GP1PLL_CTRL0 0xc0
>> +#define ANACTRL_GP1PLL_CTRL1 0xc4
>> +#define ANACTRL_GP1PLL_CTRL2 0xc8
>> +#define ANACTRL_GP1PLL_CTRL3 0xcc
>> +#define ANACTRL_GP1PLL_CTRL4 0xd0
>> +#define ANACTRL_GP1PLL_CTRL5 0xd4
>> +#define ANACTRL_GP1PLL_CTRL6 0xd8
>> +#define ANACTRL_GP1PLL_STS 0xdc
>> +#define ANACTRL_HIFIPLL_CTRL0 0x100
>> +#define ANACTRL_HIFIPLL_CTRL1 0x104
>> +#define ANACTRL_HIFIPLL_CTRL2 0x108
>> +#define ANACTRL_HIFIPLL_CTRL3 0x10c
>> +#define ANACTRL_HIFIPLL_CTRL4 0x110
>> +#define ANACTRL_HIFIPLL_CTRL5 0x114
>> +#define ANACTRL_HIFIPLL_CTRL6 0x118
>> +#define ANACTRL_HIFIPLL_STS 0x11c
>> +#define ANACTRL_MPLL_CTRL0 0x180
>> +#define ANACTRL_MPLL_CTRL1 0x184
>> +#define ANACTRL_MPLL_CTRL2 0x188
>> +#define ANACTRL_MPLL_CTRL3 0x18c
>> +#define ANACTRL_MPLL_CTRL4 0x190
>> +#define ANACTRL_MPLL_STS 0x1a4
>> +
>> +/*
>> + * These clock are a fixed value (fixed_pll is 2GHz) that is initialized by ROMcode.
>
> "This clock has a fixed rate" ?
>
> Just wondering, is it really the ROMcode doing this ?
>
> I'm sure the ROMcode must do some init but from the information
> that has surfaced recently on IRC for the GXBB and GXL, it
> looks like the final fixed PLL init is done by the bl2. Is it different
> on the C3 family ?
Look at Chuan Liu's descriptions.
>> + * The chip was changed fixed pll for security reasons. Fixed PLL registers are not writable
>> + * in the kernel phase. Write of fixed PLL-related register will cause the system to crash.
>> + * Meanwhile, these clock won't ever change at runtime.
>> + * For the above reasons, we can only use ro_ops for fixed PLL related clocks.
>> + */
>> +static struct clk_regmap fixed_pll_dco = {
>> + .data = &(struct meson_clk_pll_data) {
>> + .en = {
>> + .reg_off = ANACTRL_FIXPLL_CTRL0,
>> + .shift = 28,
>> + .width = 1,
>> + },
>> + .m = {
>> + .reg_off = ANACTRL_FIXPLL_CTRL0,
>> + .shift = 0,
>> + .width = 8,
>> + },
>> + .n = {
>> + .reg_off = ANACTRL_FIXPLL_CTRL0,
>> + .shift = 16,
>> + .width = 5,
>> + },
>> + .l = {
>> + .reg_off = ANACTRL_FIXPLL_CTRL0,
>> + .shift = 31,
>> + .width = 1,
>> + },
>> + .rst = {
>> + .reg_off = ANACTRL_FIXPLL_CTRL0,
>> + .shift = 29,
>> + .width = 1,
>> + },
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fixed_pll_dco",
>> + .ops = &meson_clk_pll_ro_ops,
>> + .parent_data = &(const struct clk_parent_data) {
>> + .fw_name = "top",
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fixed_pll = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL0,
>> + .shift = 12,
>> + .width = 3,
>> + .flags = CLK_DIVIDER_POWER_OF_TWO,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fixed_pll",
>> + .ops = &clk_regmap_divider_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll_dco.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fclk_50m_en = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL4,
>> + .bit_idx = 0,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_50m_en",
>> + .ops = &clk_regmap_gate_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_fixed_factor fclk_50m = {
>> + .mult = 1,
>> + .div = 40,
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_50m",
>> + .ops = &clk_fixed_factor_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fclk_50m_en.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_fixed_factor fclk_div2_div = {
>> + .mult = 1,
>> + .div = 2,
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div2_div",
>> + .ops = &clk_fixed_factor_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fclk_div2 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL4,
>> + .bit_idx = 24,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div2",
>> + .ops = &clk_regmap_gate_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fclk_div2_div.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_fixed_factor fclk_div2p5_div = {
>> + .mult = 2,
>> + .div = 5,
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div2p5_div",
>> + .ops = &clk_fixed_factor_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fclk_div2p5 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL4,
>> + .bit_idx = 4,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div2p5",
>> + .ops = &clk_regmap_gate_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fclk_div2p5_div.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_fixed_factor fclk_div3_div = {
>> + .mult = 1,
>> + .div = 3,
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div3_div",
>> + .ops = &clk_fixed_factor_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fclk_div3 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL4,
>> + .bit_idx = 20,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div3",
>> + .ops = &clk_regmap_gate_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fclk_div3_div.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_fixed_factor fclk_div4_div = {
>> + .mult = 1,
>> + .div = 4,
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div4_div",
>> + .ops = &clk_fixed_factor_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fclk_div4 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL4,
>> + .bit_idx = 21,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div4",
>> + .ops = &clk_regmap_gate_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fclk_div4_div.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_fixed_factor fclk_div5_div = {
>> + .mult = 1,
>> + .div = 5,
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div5_div",
>> + .ops = &clk_fixed_factor_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fclk_div5 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL4,
>> + .bit_idx = 22,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div5",
>> + .ops = &clk_regmap_gate_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fclk_div5_div.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_fixed_factor fclk_div7_div = {
>> + .mult = 1,
>> + .div = 7,
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div7_div",
>> + .ops = &clk_fixed_factor_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fixed_pll.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap fclk_div7 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_FIXPLL_CTRL4,
>> + .bit_idx = 23,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "fclk_div7",
>> + .ops = &clk_regmap_gate_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &fclk_div7_div.hw
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static const struct reg_sequence c3_gp0_init_regs[] = {
>> + { .reg = ANACTRL_GP0PLL_CTRL2, .def = 0x0 },
>> + { .reg = ANACTRL_GP0PLL_CTRL3, .def = 0x48681c00 },
>> + { .reg = ANACTRL_GP0PLL_CTRL4, .def = 0x88770290 },
>> + { .reg = ANACTRL_GP0PLL_CTRL5, .def = 0x3927200a },
>> + { .reg = ANACTRL_GP0PLL_CTRL6, .def = 0x56540000 },
>> +};
>> +
>> +static const struct pll_mult_range c3_gp0_pll_mult_range = {
>> + .min = 125,
>> + .max = 250,
>> +};
>> +
>> +static struct clk_regmap gp0_pll_dco = {
>> + .data = &(struct meson_clk_pll_data) {
>> + .en = {
>> + .reg_off = ANACTRL_GP0PLL_CTRL0,
>> + .shift = 28,
>> + .width = 1,
>> + },
>> + .m = {
>> + .reg_off = ANACTRL_GP0PLL_CTRL0,
>> + .shift = 0,
>> + .width = 9,
>> + },
>> + .frac = {
>> + .reg_off = ANACTRL_GP0PLL_CTRL1,
>> + .shift = 0,
>> + .width = 19,
>> + },
>> + .n = {
>> + .reg_off = ANACTRL_GP0PLL_CTRL0,
>> + .shift = 10,
>> + .width = 5,
>> + },
>> + .l = {
>> + .reg_off = ANACTRL_GP0PLL_CTRL0,
>> + .shift = 31,
>> + .width = 1,
>> + },
>> + .rst = {
>> + .reg_off = ANACTRL_GP0PLL_CTRL0,
>> + .shift = 29,
>> + .width = 1,
>> + },
>> + .range = &c3_gp0_pll_mult_range,
>> + .init_regs = c3_gp0_init_regs,
>> + .init_count = ARRAY_SIZE(c3_gp0_init_regs),
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "gp0_pll_dco",
>> + .ops = &meson_clk_pll_ops,
>> + .parent_data = &(const struct clk_parent_data) {
>> + .fw_name = "top",
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +/* The maximum frequency divider supports is 32, not 128(2^7) */
>> +static const struct clk_div_table c3_gp0_pll_od_table[] = {
>> + { 0, 1 },
>> + { 1, 2 },
>> + { 2, 4 },
>> + { 3, 8 },
>> + { 4, 16 },
>> + { 5, 32 },
>> + { /* sentinel */ }
>> +};
>> +
>> +static struct clk_regmap gp0_pll = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_GP0PLL_CTRL0,
>> + .shift = 16,
>> + .width = 3,
>> + .table = c3_gp0_pll_od_table,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "gp0_pll",
>> + .ops = &clk_regmap_divider_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &gp0_pll_dco.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +/*
>> + * The register corresponding to gp1_pll has permission restrictions,
>> + * The corresponding register is read-only in the kernel.
>> + * For the above reasons, we can only use ro_ops for gp1_pll related clocks.
>> + */
>> +static struct clk_regmap gp1_pll_dco = {
>> + .data = &(struct meson_clk_pll_data) {
>> + .en = {
>> + .reg_off = ANACTRL_GP1PLL_CTRL0,
>> + .shift = 28,
>> + .width = 1,
>> + },
>> + .m = {
>> + .reg_off = ANACTRL_GP1PLL_CTRL0,
>> + .shift = 0,
>> + .width = 9,
>> + },
>> + .frac = {
>> + .reg_off = ANACTRL_GP1PLL_CTRL1,
>> + .shift = 0,
>> + .width = 19,
>> + },
>> + .n = {
>> + .reg_off = ANACTRL_GP1PLL_CTRL0,
>> + .shift = 10,
>> + .width = 5,
>> + },
>> + .l = {
>> + .reg_off = ANACTRL_GP1PLL_CTRL0,
>> + .shift = 31,
>> + .width = 1,
>> + },
>> + .rst = {
>> + .reg_off = ANACTRL_GP1PLL_CTRL0,
>> + .shift = 29,
>> + .width = 1,
>> + },
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "gp1_pll_dco",
>> + .ops = &meson_clk_pll_ro_ops,
>> + .parent_data = &(const struct clk_parent_data) {
>> + .fw_name = "top",
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_GET_RATE_NOCACHE,
>> + },
>> +};
>> +
>> +static struct clk_regmap gp1_pll = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_GP1PLL_CTRL0,
>> + .shift = 16,
>> + .width = 3,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "gp1_pll",
>> + .ops = &clk_regmap_divider_ro_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &gp1_pll_dco.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_GET_RATE_NOCACHE,
>> + },
>> +};
>> +
>> +static const struct reg_sequence c3_hifi_init_regs[] = {
>> + { .reg = ANACTRL_HIFIPLL_CTRL2, .def = 0x0 },
>> + { .reg = ANACTRL_HIFIPLL_CTRL3, .def = 0x6a285c00 },
>> + { .reg = ANACTRL_HIFIPLL_CTRL4, .def = 0x65771290 },
>> + { .reg = ANACTRL_HIFIPLL_CTRL5, .def = 0x3927200a },
>> + { .reg = ANACTRL_HIFIPLL_CTRL6, .def = 0x56540000 },
>> +};
>> +
>> +static struct clk_regmap hifi_pll_dco = {
>> + .data = &(struct meson_clk_pll_data) {
>> + .en = {
>> + .reg_off = ANACTRL_HIFIPLL_CTRL0,
>> + .shift = 28,
>> + .width = 1,
>> + },
>> + .m = {
>> + .reg_off = ANACTRL_HIFIPLL_CTRL0,
>> + .shift = 0,
>> + .width = 8,
>> + },
>> + .frac = {
>> + .reg_off = ANACTRL_HIFIPLL_CTRL1,
>> + .shift = 0,
>> + .width = 19,
>> + },
>> + .n = {
>> + .reg_off = ANACTRL_HIFIPLL_CTRL0,
>> + .shift = 10,
>> + .width = 5,
>> + },
>> + .l = {
>> + .reg_off = ANACTRL_HIFIPLL_CTRL0,
>> + .shift = 31,
>> + .width = 1,
>> + },
>> + .rst = {
>> + .reg_off = ANACTRL_HIFIPLL_CTRL0,
>> + .shift = 29,
>> + .width = 1,
>> + },
>> + .range = &c3_gp0_pll_mult_range,
>> + .init_regs = c3_hifi_init_regs,
>> + .init_count = ARRAY_SIZE(c3_hifi_init_regs),
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "hifi_pll_dco",
>> + .ops = &meson_clk_pll_ops,
>> + .parent_data = &(const struct clk_parent_data) {
>> + .fw_name = "top",
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static struct clk_regmap hifi_pll = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_HIFIPLL_CTRL0,
>> + .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_hws = (const struct clk_hw *[]) {
>> + &hifi_pll_dco.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static const struct reg_sequence c3_mclk_init_regs[] = {
>> + { .reg = ANACTRL_MPLL_CTRL1, .def = 0x1420500f },
>> + { .reg = ANACTRL_MPLL_CTRL2, .def = 0x00023041 },
>> + { .reg = ANACTRL_MPLL_CTRL3, .def = 0x18180000 },
>> + { .reg = ANACTRL_MPLL_CTRL2, .def = 0x00023001 }
>> +};
>> +
>> +static const struct pll_mult_range c3_mclk_pll_mult_range = {
>> + .min = 67,
>> + .max = 133,
>> +};
>> +
>> +static struct clk_regmap mclk_pll_dco = {
>> + .data = &(struct meson_clk_pll_data) {
>> + .en = {
>> + .reg_off = ANACTRL_MPLL_CTRL0,
>> + .shift = 28,
>> + .width = 1,
>> + },
>> + .m = {
>> + .reg_off = ANACTRL_MPLL_CTRL0,
>> + .shift = 0,
>> + .width = 8,
>> + },
>> + .n = {
>> + .reg_off = ANACTRL_MPLL_CTRL0,
>> + .shift = 10,
>> + .width = 5,
>> + },
>> + .l = {
>> + .reg_off = ANACTRL_MPLL_CTRL0,
>> + .shift = 31,
>> + .width = 1,
>> + },
>> + .rst = {
>> + .reg_off = ANACTRL_MPLL_CTRL0,
>> + .shift = 29,
>> + .width = 1,
>> + },
>> + .range = &c3_mclk_pll_mult_range,
>> + .init_regs = c3_mclk_init_regs,
>> + .init_count = ARRAY_SIZE(c3_mclk_init_regs),
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk_pll_dco",
>> + .ops = &meson_clk_pll_ops,
>> + .parent_data = &(const struct clk_parent_data) {
>> + .fw_name = "mpll",
>> + },
>> + .num_parents = 1,
>> + },
>> +};
>> +
>> +static const struct clk_div_table c3_mpll_od_table[] = {
>> + { 0, 1 },
>> + { 1, 2 },
>> + { 2, 4 },
>> + { 3, 8 },
>> + { 4, 16 },
>> + { /* sentinel */ }
>> +};
>> +
>> +static struct clk_regmap mclk_pll_od = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_MPLL_CTRL0,
>> + .shift = 12,
>> + .width = 3,
>> + .table = c3_mpll_od_table,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk_pll_od",
>> + .ops = &clk_regmap_divider_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk_pll_dco.hw },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +/* both value 0 and 1 gives divide the input rate by one */
>> +static struct clk_regmap mclk_pll = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .shift = 16,
>> + .width = 5,
>> + .flags = CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk_pll",
>> + .ops = &clk_regmap_divider_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk_pll_od.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static const struct clk_parent_data mclk_parent[] = {
>> + { .hw = &mclk_pll.hw },
>> + { .fw_name = "mpll" },
>> + { .hw = &fclk_50m.hw }
>> +};
>> +
>> +static struct clk_regmap mclk0_sel = {
>> + .data = &(struct clk_regmap_mux_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .mask = 0x3,
>> + .shift = 4,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk0_sel",
>> + .ops = &clk_regmap_mux_ops,
>> + .parent_data = mclk_parent,
>> + .num_parents = ARRAY_SIZE(mclk_parent),
>> + },
>> +};
>> +
>> +static struct clk_regmap mclk0_div_en = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .bit_idx = 1,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk0_div_en",
>> + .ops = &clk_regmap_gate_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk0_sel.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static struct clk_regmap mclk0_div = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .shift = 2,
>> + .width = 1,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk0_div",
>> + .ops = &clk_regmap_divider_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk0_div_en.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static struct clk_regmap mclk0 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .bit_idx = 0,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk0",
>> + .ops = &clk_regmap_gate_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk0_div.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static struct clk_regmap mclk1_sel = {
>> + .data = &(struct clk_regmap_mux_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .mask = 0x3,
>> + .shift = 12,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk1_sel",
>> + .ops = &clk_regmap_mux_ops,
>> + .parent_data = mclk_parent,
>> + .num_parents = ARRAY_SIZE(mclk_parent),
>> + },
>> +};
>> +
>> +static struct clk_regmap mclk1_div_en = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .bit_idx = 9,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk1_div_en",
>> + .ops = &clk_regmap_gate_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk1_sel.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static struct clk_regmap mclk1_div = {
>> + .data = &(struct clk_regmap_div_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .shift = 10,
>> + .width = 1,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk1_div",
>> + .ops = &clk_regmap_divider_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk1_div_en.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static struct clk_regmap mclk1 = {
>> + .data = &(struct clk_regmap_gate_data) {
>> + .offset = ANACTRL_MPLL_CTRL4,
>> + .bit_idx = 8,
>> + },
>> + .hw.init = &(struct clk_init_data) {
>> + .name = "mclk1",
>> + .ops = &clk_regmap_gate_ops,
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &mclk1_div.hw
>> + },
>> + .num_parents = 1,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>> +static struct clk_hw *c3_pll_hw_clks[] = {
>> + [CLKID_FIXED_PLL_DCO] = &fixed_pll_dco.hw,
>> + [CLKID_FIXED_PLL] = &fixed_pll.hw,
>> + [CLKID_FCLK_50M_EN] = &fclk_50m_en.hw,
>> + [CLKID_FCLK_50M] = &fclk_50m.hw,
>> + [CLKID_FCLK_DIV2_DIV] = &fclk_div2_div.hw,
>> + [CLKID_FCLK_DIV2] = &fclk_div2.hw,
>> + [CLKID_FCLK_DIV2P5_DIV] = &fclk_div2p5_div.hw,
>> + [CLKID_FCLK_DIV2P5] = &fclk_div2p5.hw,
>> + [CLKID_FCLK_DIV3_DIV] = &fclk_div3_div.hw,
>> + [CLKID_FCLK_DIV3] = &fclk_div3.hw,
>> + [CLKID_FCLK_DIV4_DIV] = &fclk_div4_div.hw,
>> + [CLKID_FCLK_DIV4] = &fclk_div4.hw,
>> + [CLKID_FCLK_DIV5_DIV] = &fclk_div5_div.hw,
>> + [CLKID_FCLK_DIV5] = &fclk_div5.hw,
>> + [CLKID_FCLK_DIV7_DIV] = &fclk_div7_div.hw,
>> + [CLKID_FCLK_DIV7] = &fclk_div7.hw,
>> + [CLKID_GP0_PLL_DCO] = &gp0_pll_dco.hw,
>> + [CLKID_GP0_PLL] = &gp0_pll.hw,
>> + [CLKID_GP1_PLL_DCO] = &gp1_pll_dco.hw,
>> + [CLKID_GP1_PLL] = &gp1_pll.hw,
>> + [CLKID_HIFI_PLL_DCO] = &hifi_pll_dco.hw,
>> + [CLKID_HIFI_PLL] = &hifi_pll.hw,
>> + [CLKID_MCLK_PLL_DCO] = &mclk_pll_dco.hw,
>> + [CLKID_MCLK_PLL_OD] = &mclk_pll_od.hw,
>> + [CLKID_MCLK_PLL] = &mclk_pll.hw,
>> + [CLKID_MCLK0_SEL] = &mclk0_sel.hw,
>> + [CLKID_MCLK0_SEL_EN] = &mclk0_div_en.hw,
>> + [CLKID_MCLK0_DIV] = &mclk0_div.hw,
>> + [CLKID_MCLK0] = &mclk0.hw,
>> + [CLKID_MCLK1_SEL] = &mclk1_sel.hw,
>> + [CLKID_MCLK1_SEL_EN] = &mclk1_div_en.hw,
>> + [CLKID_MCLK1_DIV] = &mclk1_div.hw,
>> + [CLKID_MCLK1] = &mclk1.hw
>> +};
>> +
>> +/* Convenience table to populate regmap in .probe */
>> +static struct clk_regmap *const c3_pll_clk_regmaps[] = {
>> + &fixed_pll_dco,
>> + &fixed_pll,
>> + &fclk_50m_en,
>> + &fclk_div2,
>> + &fclk_div2p5,
>> + &fclk_div3,
>> + &fclk_div4,
>> + &fclk_div5,
>> + &fclk_div7,
>> + &gp0_pll_dco,
>> + &gp0_pll,
>> + &gp1_pll_dco,
>> + &gp1_pll,
>> + &hifi_pll_dco,
>> + &hifi_pll,
>> + &mclk_pll_dco,
>> + &mclk_pll_od,
>> + &mclk_pll,
>> + &mclk0_sel,
>> + &mclk0_div_en,
>> + &mclk0_div,
>> + &mclk0,
>> + &mclk1_sel,
>> + &mclk1_div_en,
>> + &mclk1_div,
>> + &mclk1,
>> +};
>> +
>> +static struct regmap_config clkc_regmap_config = {
>> + .reg_bits = 32,
>> + .val_bits = 32,
>> + .reg_stride = 4,
>> +};
>> +
>> +static struct meson_clk_hw_data c3_pll_clks = {
>> + .hws = c3_pll_hw_clks,
>> + .num = ARRAY_SIZE(c3_pll_hw_clks),
>> +};
>> +
>> +static int aml_c3_pll_probe(struct platform_device *pdev)
>> +{
>> + struct device *dev = &pdev->dev;
>> + struct regmap *regmap;
>> + void __iomem *base;
>> + int clkid, ret, i;
>> +
>> + base = devm_platform_ioremap_resource(pdev, 0);
>> + if (IS_ERR(base))
>> + return PTR_ERR(base);
>> +
>> + regmap = devm_regmap_init_mmio(dev, base, &clkc_regmap_config);
>> + if (IS_ERR(regmap))
>> + return PTR_ERR(regmap);
>> +
>> + /* Populate regmap for the regmap backed clocks */
>> + for (i = 0; i < ARRAY_SIZE(c3_pll_clk_regmaps); i++)
>> + c3_pll_clk_regmaps[i]->map = regmap;
>> +
>> + for (clkid = 0; clkid < c3_pll_clks.num; clkid++) {
>> + /* array might be sparse */
>> + if (!c3_pll_clks.hws[clkid])
>> + continue;
>> +
>> + ret = devm_clk_hw_register(dev, c3_pll_clks.hws[clkid]);
>> + if (ret) {
>> + dev_err(dev, "Clock registration failed\n");
>> + return ret;
>> + }
>> + }
>> +
>> + return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get,
>> + &c3_pll_clks);
>> +}
>> +
>> +static const struct of_device_id c3_pll_clkc_match_table[] = {
>> + {
>> + .compatible = "amlogic,c3-pll-clkc",
>> + },
>> + {}
>> +};
>> +MODULE_DEVICE_TABLE(of, c3_pll_clkc_match_table);
>> +
>> +static struct platform_driver c3_pll_driver = {
>> + .probe = aml_c3_pll_probe,
>> + .driver = {
>> + .name = "c3-pll-clkc",
>> + .of_match_table = c3_pll_clkc_match_table,
>> + },
>> +};
>> +
>> +module_platform_driver(c3_pll_driver);
>> +MODULE_AUTHOR("Chuan Liu <chuan.liu@...ogic.com>");
>> +MODULE_LICENSE("GPL");
>
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