[PATCH v3 3/3] dt-bindings: msm/dp: handle DP vs eDP difference

[Dmitry Baryshkov <dmitry.baryshkov@linaro.org>]

The #sound-dai-cells property should be used only for DP controllers. It
doesn't make sense for eDP, there is no support for audio output. The
aux-bus should not be used for DP controllers. Also p1 MMIO region
should be used only for DP controllers.

Take care of these differences.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 .../bindings/display/msm/dp-controller.yaml   | 26 ++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
index 52cbf00df0ba..f2515af8256f 100644
--- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
@@ -24,6 +24,7 @@ properties:
       - qcom,sm8350-dp
 
   reg:
+    minItems: 4
     items:
       - description: ahb register block
       - description: aux register block
@@ -112,10 +113,33 @@ required:
   - clock-names
   - phys
   - phy-names
-  - "#sound-dai-cells"
   - power-domains
   - ports
 
+allOf:
+  # AUX BUS does not exist on DP controllers
+  # Audio output also is present only on DP output
+  # p1 regions is present on DP, but not on eDP
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,sc7280-edp
+              - qcom,sc8180x-edp
+    then:
+      properties:
+        "#sound-dai-cells": false
+        reg:
+          maxItems: 4
+    else:
+      properties:
+        aux-bus: false
+        reg:
+          minItems: 5
+      required:
+        - "#sound-dai-cells"
+
 additionalProperties: false
 
 examples:
-- 
2.35.1