linux-kernel - Re: [PATCH v4 5/5] drm/msm/dp: Add DisplayPort controller for SA8775P

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Message-ID: <wdslr77zwyyyesf47qmem3wmextrjfh5do4ckrk6vvzeqwi5gu@x3sxgiusspqp>
Date: Sun, 6 Oct 2024 22:51:44 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Soutrik Mukhopadhyay <quic_mukhopad@...cinc.com>
Cc: vkoul@...nel.org, kishon@...nel.org, konradybcio@...nel.org, 
	andersson@...nel.org, simona@...ll.ch, abel.vesa@...aro.org, robdclark@...il.com, 
	quic_abhinavk@...cinc.com, sean@...rly.run, marijn.suijten@...ainline.org, 
	airlied@...il.com, daniel@...ll.ch, maarten.lankhorst@...ux.intel.com, 
	mripard@...nel.org, tzimmermann@...e.de, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, quic_khsieh@...cinc.com, konrad.dybcio@...aro.org, 
	quic_parellan@...cinc.com, quic_bjorande@...cinc.com, linux-arm-msm@...r.kernel.org, 
	linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org, quic_riteshk@...cinc.com, 
	quic_vproddut@...cinc.com
Subject: Re: [PATCH v4 5/5] drm/msm/dp: Add DisplayPort controller for SA8775P

On Fri, Oct 04, 2024 at 04:00:46PM GMT, Soutrik Mukhopadhyay wrote:
> The Qualcomm SA8775P platform comes with 2 DisplayPort controllers
> for each mdss, having different base offsets than the previous
> SoCs. The support for all 4 DPTX have been added here, and
> validation of only MDSS0 DPTX0 and DPTX1 have been conducted.
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Signed-off-by: Soutrik Mukhopadhyay <quic_mukhopad@...cinc.com>
> ---
> v2: No change
> 
> v3: Fixed review comments from Konrad and Bjorn
> 	-Added all the necessary DPTX controllers for this platform.
> 
> v4: Updated commit message
> 
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index e1228fb093ee..2195779584dc 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -118,6 +118,14 @@ struct msm_dp_desc {
>  	bool wide_bus_supported;
>  };
>  
> +static const struct msm_dp_desc sa8775p_dp_descs[] = {
> +	{ .io_start = 0xaf54000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true },
> +	{ .io_start = 0xaf5c000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported = true },
> +	{ .io_start = 0x22154000, .id = MSM_DP_CONTROLLER_2, .wide_bus_supported = true },
> +	{ .io_start = 0x2215c000, .id = MSM_DP_CONTROLLER_3, .wide_bus_supported = true },

Please take a look at other device descriptions in the file, note the
difference and fix your DP description accordingly.

> +	{}
> +};
> +
>  static const struct msm_dp_desc sc7180_dp_descs[] = {
>  	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true },
>  	{}
> @@ -162,6 +170,7 @@ static const struct msm_dp_desc x1e80100_dp_descs[] = {
>  };
>  
>  static const struct of_device_id dp_dt_match[] = {
> +	{ .compatible = "qcom,sa8775p-dp", .data = &sa8775p_dp_descs },
>  	{ .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_descs },
>  	{ .compatible = "qcom,sc7280-dp", .data = &sc7280_dp_descs },
>  	{ .compatible = "qcom,sc7280-edp", .data = &sc7280_dp_descs },
> -- 
> 2.17.1
> 

-- 
With best wishes
Dmitry