linux-kernel - [PATCH v9 2/6] dt-bindings: display/msm: dp-controller: document QCS8300 compatible

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Message-Id: <20250825-qcs8300_mdss-v9-2-ebda1de80ca0@oss.qualcomm.com>
Date: Mon, 25 Aug 2025 11:34:21 +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 v9 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
that supports 4 MST streams.

Signed-off-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
---
 .../bindings/display/msm/dp-controller.yaml        | 26 +++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
index 68a6fd27506fda004e53174db5bcc88a29e8d2a6..4da22a211442b7abe2dc18e769d8fd14d224eb40 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:
@@ -241,11 +243,25 @@ allOf:
               minItems: 5
               maxItems: 6
         else:
-          # Default to 2 streams MST
-          properties:
-            clocks:
-              minItems: 6
-              maxItems: 6
+          if:
+            properties:
+              compatible:
+                contains:
+                  enum:
+                    # QCS8300 only has one DP controller that supports 4
+                    # streams MST.
+                    - qcom,qcs8300-dp
+          then:
+            properties:
+              clocks:
+                minItems: 8
+                maxItems: 8
+          else:
+            # Default to 2 streams MST
+            properties:
+              clocks:
+                minItems: 6
+                maxItems: 6
 
 
 additionalProperties: false

-- 
2.34.1