diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
index 39143424a474064327701868e4625866cd91f257..8346bac81f1c2b75427a97ba61fed7757c14a879 100644
--- a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
@@ -38,6 +38,13 @@ Optional properties
 - phys: from general PHY binding: the phandle for the PHY device.
 - phy-names: Should be "hdmi" if phys references an external phy.
 
+Optional pinctrl entry:
+- If you have both a "unwedge" and "default" pinctrl entry, dw_hdmi
+  will switch to the unwedge pinctrl state for 10ms if it ever gets an
+  i2c timeout.  It's intended that this unwedge pinctrl entry will
+  cause the SDA line to be driven low to work around a hardware
+  errata.
+
 Example:
 
 hdmi: hdmi@ff980000 {