linux-kernel - [PATCH v7 2/6] dt-bindings: display/msm: dp-controller: document QCS8300 compatible

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Message-Id: <20250819-qcs8300_mdss-v7-2-49775ef134f4@oss.qualcomm.com>
Date: Tue, 19 Aug 2025 11:33:29 +0800
From: Yongxing Mou <yongxing.mou@....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>,
        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>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kuogee Hsieh <quic_khsieh@...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,
        Yongxing Mou <yongxing.mou@....qualcomm.com>
Subject: [PATCH v7 2/6] dt-bindings: display/msm: dp-controller: document
 QCS8300 compatible

Add compatible string for the DisplayPort controller found on the
Qualcomm QCS8300 SoC.

The Qualcomm QCS8300 platform comes with one DisplayPort controller
with same base offset as SM8650. But it requires new compatible string
because QCS8300 controller supports 4 MST streams. 4 MST streams will
be enabled as part of MST feature support. Currently, using SM8650 as
fallback to enable SST on QCS8300.

Signed-off-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
---
 Documentation/devicetree/bindings/display/msm/dp-controller.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
index 68a6fd27506fda004e53174db5bcc88a29e8d2a6..ac44abfdd2853393ae199387c9ae2c37e1c48f52 100644
--- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
@@ -18,6 +18,7 @@ properties:
   compatible:
     oneOf:
       - enum:
+          - qcom,qcs8300-dp
           - qcom,sa8775p-dp
           - qcom,sc7180-dp
           - qcom,sc7280-dp
@@ -179,6 +180,7 @@ allOf:
           compatible:
             contains:
               enum:
+                - qcom,qcs8300-dp
                 - qcom,sa8775p-dp
                 - qcom,x1e80100-dp
       then:
@@ -217,8 +219,9 @@ allOf:
           compatible:
             contains:
               enum:
-                # some of SA8775P DP controllers support 4 streams MST,
+                # SA8775P DP0 and QCS8300 DP controllers support 4 streams MST,
                 # others just 2 streams MST
+                - qcom,qcs8300-dp
                 - qcom,sa8775p-dp
       then:
         properties:

-- 
2.34.1