[PATCH v2 1/3] dt-bindings: display: msm: Add INT2 GDSC to Kaanapali DPU

[Yongxing Mou]

Kaanapali (SM8850) has an additional INT2 GDSC that powers a subset
of the DPU source pipes (VIG2/VIG3/DMA5), on top of the CORE_GDSC
that powers the rest of the MDSS hardware.

Describe INT2 GDSC as an additional power domain of the DPU device
rather than of the whole MDSS, since it only supplies DPU-local
source pipes. Restrict the schema change to the Kaanapali DPU
compatible via an if/then, so other platforms sharing
qcom,sm8650-dpu.yaml (which don't have an INT2 GDSC) keep the
existing single power-domain constraint.

Signed-off-by: Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>
---
 .../bindings/display/msm/dpu-common.yaml           | 19 ++++++++++++++++--
 .../bindings/display/msm/qcom,sm8650-dpu.yaml      | 23 ++++++++++++++++++++++
 2 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dpu-common.yaml b/Documentation/devicetree/bindings/display/msm/dpu-common.yaml
index 3f953aa5e694..19b791a857b5 100644
--- a/Documentation/devicetree/bindings/display/msm/dpu-common.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dpu-common.yaml
@@ -25,8 +25,7 @@ properties:
   interrupts:
     maxItems: 1
 
-  power-domains:
-    maxItems: 1
+  power-domains: true
 
   operating-points-v2: true
   opp-table:
@@ -53,4 +52,20 @@ required:
   - operating-points-v2
   - ports
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,kaanapali-dpu
+    then:
+      properties:
+        power-domains:
+          minItems: 2
+          maxItems: 2
+    else:
+      properties:
+        power-domains:
+          maxItems: 1
+
 additionalProperties: true
diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
index aa0cf0ec5b93..88aa71d2b912 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
@@ -61,6 +61,29 @@ required:
   - clocks
   - clock-names
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,kaanapali-dpu
+    then:
+      properties:
+        power-domains:
+          items:
+            - description: MMCX power domain
+            - description: INT2 GDSC power domain
+
+        power-domain-names:
+          minItems: 2
+          maxItems: 2
+          items:
+            - const: mmcx
+            - const: int2
+
+      required:
+        - power-domain-names
+
 unevaluatedProperties: false
 
 examples:

-- 
2.43.0