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-rw-r--r--Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
index 39143424a474..8346bac81f1c 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 {