Quoting Krzysztof Kozlowski (2024-11-28 07:08:01)
> diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
> index 2ec9be21ff678e3343cccafa85801aa68805f440..d9ab42c625ddd61f9bf1857522d44d4547e42bf5 100644
> --- a/drivers/clk/qcom/Kconfig
> +++ b/drivers/clk/qcom/Kconfig
> @@ -1022,6 +1022,16 @@ config SM_DISPCC_8550
> Say Y if you want to support display devices and functionality such as
> splash screen.
>
> +config SM_DISPCC_8750
> + tristate "SM8750 Display Clock Controller"
> + depends on ARM64 || COMPILE_TEST
Please select QCOM_GDSC
> + depends on SM_GCC_8750
select? Or imply? It's a functional dependency, not a build time one.
> + help
> diff --git a/drivers/clk/qcom/dispcc-sm8750.c b/drivers/clk/qcom/dispcc-sm8750.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..ff64ff93c4dbdd2aae22b55dd0e404544cc9373e
> --- /dev/null
> +++ b/drivers/clk/qcom/dispcc-sm8750.c
> @@ -0,0 +1,1960 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2021, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023-2024, Linaro Ltd.
> + */
> +
> +#include <linux/clk.h>
Is this include used?
> +#include <linux/clk-provider.h>
> +#include <linux/err.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
> +#include <linux/pm_runtime.h>
> +
> +#include <dt-bindings/clock/qcom,sm8750-dispcc.h>
> +
> +#include "common.h"
> +#include "clk-alpha-pll.h"
> +#include "clk-branch.h"
> +#include "clk-pll.h"
> +#include "clk-rcg.h"
> +#include "clk-regmap.h"
> +#include "clk-regmap-divider.h"
> +#include "clk-regmap-mux.h"
> +#include "reset.h"
> +#include "gdsc.h"
[...]
> +};
> +
> +static struct clk_rcg2 disp_cc_mdss_mdp_clk_src = {
> + .cmd_rcgr = 0x8150,
> + .mnd_width = 0,
> + .hid_width = 5,
> + .parent_map = disp_cc_parent_map_9,
> + .freq_tbl = ftbl_disp_cc_mdss_mdp_clk_src,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "disp_cc_mdss_mdp_clk_src",
> + .parent_data = disp_cc_parent_data_9,
> + .num_parents = ARRAY_SIZE(disp_cc_parent_data_9),
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_rcg2_shared_ops, /* TODO: switch to cesta managed clocks */
What is cesta?
> + },
> +};
> +
> +static struct clk_rcg2 disp_cc_mdss_pclk0_clk_src = {
> + .cmd_rcgr = 0x8108,
> + .mnd_width = 8,
> + .hid_width = 5,
> + .parent_map = disp_cc_parent_map_1,
> + .freq_tbl = ftbl_disp_cc_esync0_clk_src,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "disp_cc_mdss_pclk0_clk_src",
> + .parent_data = disp_cc_parent_data_1,
> + .num_parents = ARRAY_SIZE(disp_cc_parent_data_1),
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_pixel_ops,
> + },
[...]
> + .enable_reg = 0x80b4,
> + .enable_mask = BIT(0),
> + .hw.init = &(const struct clk_init_data) {
> + .name = "disp_cc_osc_clk",
> + .parent_hws = (const struct clk_hw*[]) {
> + &disp_cc_osc_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_branch2_ops,
> + },
> + },
> +};
> +
> +static struct gdsc mdss_gdsc = {
> + .gdscr = 0x9000,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0xf,
> + .pd = {
> + .name = "mdss_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> + .flags = POLL_CFG_GDSCR | HW_CTRL | RETAIN_FF_ENABLE,
> + // TODO: no supply?
What is this?
> +};
> +
> +static struct gdsc mdss_int2_gdsc = {
> + .gdscr = 0xb000,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0xf,
> + .pd = {
> + .name = "mdss_int2_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> + .flags = POLL_CFG_GDSCR | HW_CTRL | RETAIN_FF_ENABLE,
