linux-kernel - Re: [PATCH v2 12/13] drm/msm/dp: Add DisplayPort support for QCS615

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Message-ID: <bca68e7a-cb36-4903-bde9-15cb1945c71e@kernel.org>
Date: Tue, 22 Jul 2025 11:21:39 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Xiangxu Yin <xiangxu.yin@....qualcomm.com>,
 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>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Kuogee Hsieh <quic_khsieh@...cinc.com>,
 Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
 dmitry.baryshkov@....qualcomm.com, konrad.dybcio@....qualcomm.com,
 fange.zhang@....qualcomm.com, quic_lliu6@...cinc.com,
 quic_yongmou@...cinc.com
Subject: Re: [PATCH v2 12/13] drm/msm/dp: Add DisplayPort support for QCS615

On 22/07/2025 09:22, Xiangxu Yin wrote:
> The Qualcomm QCS615 platform comes with a DisplayPort controller use the
> same base offset as sc7180. add support for this in DP driver.
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> 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 },


So devices are compatible? Why are you adding this entry instead of
expressing compatibility?

Best regards,
Krzysztof