linux-kernel - [PATCH v7 2/9] dt-bindings: display/msm: dp-controller: fix fallback for SM6350

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Message-Id: <20250829-dp_mst_bindings-v7-2-2b268a43917b@oss.qualcomm.com>
Date: Fri, 29 Aug 2025 01:48:15 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: 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>,
        Abel Vesa <abel.vesa@...aro.org>, Mahadevan <quic_mahap@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...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,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v7 2/9] dt-bindings: display/msm: dp-controller: fix
 fallback for SM6350

The SM6350 doesn't have MST support, as such it is not compatible with
the SM8350 platform. Add new entry for SM6350 with fallback to SC7180
(which belongs to the same generation and also doesn't have MST
support).

Fixes: 39086151593a ("dt-bindings: display: msm: dp-controller: document SM6350 compatible")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
 .../devicetree/bindings/display/msm/dp-controller.yaml     | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
index aed3bafa67e3c24d2a876acd29660378b367603a..0f814aa6f51406fdbdd7386027f88dfbacb24392 100644
--- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
@@ -31,13 +31,25 @@ properties:
           - qcom,sm8650-dp
       - items:
           - enum:
-              - qcom,sar2130p-dp
               - qcom,sm6350-dp
+          - const: qcom,sc7180-dp
+
+      # deprecated entry for compatibility with old DT
+      - items:
+          - enum:
+              - qcom,sm6350-dp
+          - const: qcom,sm8350-dp
+        deprecated: true
+
+      - items:
+          - enum:
+              - qcom,sar2130p-dp
               - qcom,sm8150-dp
               - qcom,sm8250-dp
               - qcom,sm8450-dp
               - qcom,sm8550-dp
           - const: qcom,sm8350-dp
+
       - items:
           - enum:
               - qcom,sm8750-dp

-- 
2.47.2