exynos-gsc: add devicetree binding optional flag for lcd-wb

[platform/kernel/linux-exynos.git] / Documentation / devicetree / bindings / media / exynos5-gsc.txt

diff --git a/Documentation/devicetree/bindings/media/exynos5-gsc.txt b/Documentation/devicetree/bindings/media/exynos5-gsc.txt
index 0604d42..d526777 100644 (file)
--- a/Documentation/devicetree/bindings/media/exynos5-gsc.txt
+++ b/Documentation/devicetree/bindings/media/exynos5-gsc.txt
@@ -7,6 +7,10 @@ Required properties:
 - reg: should contain G-Scaler physical address location and length.
 - interrupts: should contain G-Scaler interrupt number
 
+Optional properties:
+- samsung,lcd-wb: this property must be present if the IP block has the LCD
+  writeback input.
+
 Example:
 
 gsc_0:  gsc@0x13e00000 {