linux-kernel - Re: [PATCH v1 4/5] clk: qcom: dispcc-sm8250: Add missing EDP clocks for sm8350

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Date:   Thu, 27 Oct 2022 15:42:33 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Robert Foss <robert.foss@...aro.org>, agross@...nel.org,
        bjorn.andersson@...aro.org, konrad.dybcio@...ainline.org,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bjorn Andersson <quic_bjorande@...cinc.com>,
        Jonathan Marek <jonathan@...ek.ca>
Subject: Re: [PATCH v1 4/5] clk: qcom: dispcc-sm8250: Add missing EDP clocks
 for sm8350

On 27/10/2022 15:34, Robert Foss wrote:
> SM8350 supports embedded displayport, but the clocks for this
> were previously not enabled.

I'd say 'not accounted for' instead. Bjorn has added eDP clocks, but 
they were following the 8150 (no div_clk_src) and the offsets were not 
updated.

> 
> Signed-off-by: Robert Foss <robert.foss@...aro.org>
> ---
>   drivers/clk/qcom/dispcc-sm8250.c | 22 +++++++++++++++++++++-
>   1 file changed, 21 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/qcom/dispcc-sm8250.c b/drivers/clk/qcom/dispcc-sm8250.c
> index a7606580cf22..d2aaa44ed3d4 100644
> --- a/drivers/clk/qcom/dispcc-sm8250.c
> +++ b/drivers/clk/qcom/dispcc-sm8250.c
> @@ -462,6 +462,20 @@ static struct clk_branch disp_cc_mdss_edp_link_clk = {
>   	},
>   };
>   
> +static struct clk_regmap_div disp_cc_mdss_edp_link_div_clk_src = {
> +	.reg = 0x2288,
> +	.shift = 0,
> +	.width = 2,
> +	.clkr.hw.init = &(struct clk_init_data) {
> +		.name = "disp_cc_mdss_edp_link_div_clk_src",
> +		.parent_hws = (const struct clk_hw*[]){
> +			&disp_cc_mdss_edp_link_clk_src.clkr.hw,
> +		},
> +		.num_parents = 1,
> +		.ops = &clk_regmap_div_ro_ops,
> +	},
> +};
> +
>   static struct clk_branch disp_cc_mdss_edp_link_intf_clk = {
>   	.halt_reg = 0x2074,
>   	.halt_check = BRANCH_HALT,
> @@ -471,7 +485,7 @@ static struct clk_branch disp_cc_mdss_edp_link_intf_clk = {
>   		.hw.init = &(struct clk_init_data){
>   			.name = "disp_cc_mdss_edp_link_intf_clk",
>   			.parent_hws = (const struct clk_hw*[]){
> -				&disp_cc_mdss_edp_link_clk_src.clkr.hw,
> +				&disp_cc_mdss_edp_link_div_clk_src.clkr.hw,
>   			},
>   			.num_parents = 1,
>   			.flags = CLK_GET_RATE_NOCACHE,
> @@ -1175,6 +1189,7 @@ static struct clk_regmap *disp_cc_sm8250_clocks[] = {
>   	[DISP_CC_MDSS_EDP_GTC_CLK_SRC] = &disp_cc_mdss_edp_gtc_clk_src.clkr,
>   	[DISP_CC_MDSS_EDP_LINK_CLK] = &disp_cc_mdss_edp_link_clk.clkr,
>   	[DISP_CC_MDSS_EDP_LINK_CLK_SRC] = &disp_cc_mdss_edp_link_clk_src.clkr,
> +	[DISP_CC_MDSS_EDP_LINK_DIV_CLK_SRC] = &disp_cc_mdss_edp_link_div_clk_src.clkr,
>   	[DISP_CC_MDSS_EDP_LINK_INTF_CLK] = &disp_cc_mdss_edp_link_intf_clk.clkr,
>   	[DISP_CC_MDSS_EDP_PIXEL_CLK] = &disp_cc_mdss_edp_pixel_clk.clkr,
>   	[DISP_CC_MDSS_EDP_PIXEL_CLK_SRC] = &disp_cc_mdss_edp_pixel_clk_src.clkr,
> @@ -1285,7 +1300,11 @@ static int disp_cc_sm8250_probe(struct platform_device *pdev)
>   			&disp_cc_mdss_dp_pixel1_clk_src,
>   			&disp_cc_mdss_dp_pixel2_clk_src,
>   			&disp_cc_mdss_dp_pixel_clk_src,
> +			&disp_cc_mdss_edp_aux_clk_src,
> +			&disp_cc_mdss_edp_link_clk_src,
> +			&disp_cc_mdss_edp_pixel_clk_src,
>   			&disp_cc_mdss_esc0_clk_src,
> +			&disp_cc_mdss_esc1_clk_src,
>   			&disp_cc_mdss_mdp_clk_src,
>   			&disp_cc_mdss_pclk0_clk_src,
>   			&disp_cc_mdss_pclk1_clk_src,
> @@ -1297,6 +1316,7 @@ static int disp_cc_sm8250_probe(struct platform_device *pdev)
>   			&disp_cc_mdss_byte1_div_clk_src,
>   			&disp_cc_mdss_dp_link1_div_clk_src,
>   			&disp_cc_mdss_dp_link_div_clk_src,
> +			&disp_cc_mdss_edp_link_div_clk_src,
>   		};
>   		unsigned int i;
>   		static bool offset_applied;

-- 
With best wishes
Dmitry