linux-kernel - Re: [PATCH 2/2] drm/msm/dp: Add DisplayPort support for SM6150

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Message-ID: <budeqnh65mcmtc5rscbgvy2nz3woptxnht6sddzg7jhttsnx5f@bwf3kyvbrfaj>
Date: Fri, 12 Sep 2025 14:47:56 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
Cc: Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        fange.zhang@....qualcomm.com, yongxing.mou@....qualcomm.com,
        li.liu@....qualcomm.com
Subject: Re: [PATCH 2/2] drm/msm/dp: Add DisplayPort support for SM6150

On Fri, Sep 12, 2025 at 07:39:17PM +0800, Xiangxu Yin wrote:
> Add support for SM6150 DisplayPort controller, which shares base offset
> and configuration with SC7180. While SM6150 lacks some SC7180 features
> (e.g. HBR3, MST), current msm_dp_desc_sc7180 data is sufficient. Listing it

SM6150 supports MST as far as I can see.

> explicitly ensures future compatibility.
> 
> Signed-off-by: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index d87d47cc7ec3eb757ac192c411000bc50b824c59..ddb22b50490035779904d4cab20e2fee7e0f9657 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -196,6 +196,7 @@ static const struct of_device_id msm_dp_dt_match[] = {
>  	{ .compatible = "qcom,sc8280xp-dp", .data = &msm_dp_desc_sc8280xp },
>  	{ .compatible = "qcom,sc8280xp-edp", .data = &msm_dp_desc_sc8280xp },
>  	{ .compatible = "qcom,sdm845-dp", .data = &msm_dp_desc_sdm845 },
> +	{ .compatible = "qcom,sm6150-dp", .data = &msm_dp_desc_sc7180 },
>  	{ .compatible = "qcom,sm8350-dp", .data = &msm_dp_desc_sc7180 },
>  	{ .compatible = "qcom,sm8650-dp", .data = &msm_dp_desc_sm8650 },
>  	{ .compatible = "qcom,x1e80100-dp", .data = &msm_dp_desc_x1e80100 },
> 
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry