[PATCH 15/27] dt-bindings: display: rockchip: dw-hdmi: Add regulator support

[Sascha Hauer]

The RK3568 has HDMI_TX_AVDD0V9 and HDMI_TX_AVDD_1V8 supply inputs
needed for the HDMI port. Add the binding for these supplies.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 .../bindings/display/rockchip/rockchip,dw-hdmi.yaml   | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
index 638119924ad8..d7cb2b2be60e 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
@@ -28,6 +28,17 @@ properties:
   reg-io-width:
     const: 4
 
+  avdd-0v9-supply:
+    description:
+      A 0.9V supply that powers up the SoC internal circuitry. The actual pin name
+      varies between the different SoCs and is usually HDMI_TX_AVDD_0V9 or sometimes
+      HDMI_AVDD_1V0.
+
+  avdd-1v8-supply:
+    description:
+      A 1.8V supply that powers up the SoC internal circuitry. The pin name on the
+      SoC usually is HDMI_TX_AVDD_1V8.
+
   clocks:
     minItems: 2
     items:
-- 
2.30.2