diff mbox series

[v3,2/7] dt-bindings: display: rockchip,inno-hdmi: Document GRF for RK3036 HDMI

Message ID 20250402123150.238234-3-andyshrk@163.com (mailing list archive)
State New
Headers show
Series Convert inno hdmi to drm bridge | expand

Commit Message

Andy Yan April 2, 2025, 12:31 p.m. UTC 
From: Andy Yan <andy.yan@rock-chips.com>

HDMI on RK3036 use GRF control the HSYNC/VSYNC polarity, but this part
is missing when it first landing upstream.

Document that it is mandatory for RK3036 HDMI.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>

---

(no changes since v2)

Changes in v2:
- First included in v2

 .../bindings/display/rockchip/rockchip,inno-hdmi.yaml    | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
index 9d1e7f894ea54..290376bec079a 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
@@ -56,6 +56,12 @@  properties:
       - port@0
       - port@1
 
+  rockchip,grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to GRF used for control the polarity of hsync/vsync of rk3036
+      HDMI.
+
 required:
   - compatible
   - reg
@@ -75,6 +81,8 @@  allOf:
             const: rockchip,rk3036-inno-hdmi
 
     then:
+      required:
+        - rockchip,grf
       properties:
         power-domains: false
 
@@ -103,6 +111,7 @@  examples:
       clock-names = "pclk", "ref";
       pinctrl-names = "default";
       pinctrl-0 = <&hdmi_ctl>;
+      rockchip,grf = <&grf>;
       #sound-dai-cells = <0>;
 
       ports {