linux-kernel - [PATCH v5 1/6] dt-bindings: display/msm: dp-controller: allow eDP for SA8775P

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Message-Id: <20250809-dp_mst_bindings-v5-1-b185fe574f38@oss.qualcomm.com>
Date: Sat, 09 Aug 2025 12:16:15 +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 v5 1/6] dt-bindings: display/msm: dp-controller: allow eDP
 for SA8775P

On Qualcomm SA8775P the DP controller might be driving either a
DisplayPort or a eDP sink (depending on the PHY that is tied to the
controller). Reflect that in the schema.

Acked-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
 .../bindings/display/msm/dp-controller.yaml        | 25 ++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
index 9923b065323bbab99de5079b674a0317f3074373..aed3bafa67e3c24d2a876acd29660378b367603a 100644
--- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
@@ -174,12 +174,25 @@ allOf:
       properties:
         "#sound-dai-cells": false
     else:
-      properties:
-        aux-bus: false
-        reg:
-          minItems: 5
-      required:
-        - "#sound-dai-cells"
+      if:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - qcom,sa8775p-dp
+      then:
+        oneOf:
+          - required:
+              - aux-bus
+          - required:
+              - "#sound-dai-cells"
+      else:
+        properties:
+          aux-bus: false
+          reg:
+            minItems: 5
+        required:
+          - "#sound-dai-cells"
 
 additionalProperties: false
 

-- 
2.39.5