[v3,01/29] dt-bindings: display: rockchip,inno-hdmi: Document RK3128 compatible

Commit Message

Alex Bee Dec. 19, 2023, 5 p.m. UTC

The integration for this SoC is different from the currently existing: It
needs it's PHY's reference clock rate to calculate the DDC bus frequency
correctly. The controller is also part of a powerdomain, so this gets added
as an mandatory property for this variant.

Signed-off-by: Alex Bee <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
---
changes in v2:
 - clarify that the controller itself is part of the powerdomain
 - simplify clock-names
 - made power-domains property only allowed (and required) for new variant

changes in v3:
 - collect RB

 .../display/rockchip/rockchip,inno-hdmi.yaml  | 40 ++++++++++++++++++-
 1 file changed, 38 insertions(+), 2 deletions(-)

Patch

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
index 96889c86849a..be78dcfa1c76 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
@@ -14,6 +14,7 @@  properties:
   compatible:
     enum:
       - rockchip,rk3036-inno-hdmi
+      - rockchip,rk3128-inno-hdmi
 
   reg:
     maxItems: 1
@@ -22,10 +23,19 @@  properties:
     maxItems: 1
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: The HDMI controller main clock
+      - description: The HDMI PHY reference clock
 
   clock-names:
-    const: pclk
+    minItems: 1
+    items:
+      - const: pclk
+      - const: ref
+
+  power-domains:
+    maxItems: 1
 
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
@@ -55,6 +65,32 @@  required:
   - pinctrl-names
   - ports
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3036-inno-hdmi
+
+    then:
+      properties:
+        power-domains: false
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3128-inno-hdmi
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+      required:
+        - power-domains
+
 additionalProperties: false
 
 examples: