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-rw-r--r--Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt23
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
index 82f2acb3d374..0398aec488ac 100644
--- a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
+++ b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
@@ -15,6 +15,13 @@ Required children nodes:
to external devices using the OF graph reprensentation (see ../graph.txt).
At least one port node is required.
+Optional properties in grandchild nodes:
+ Any endpoint grandchild node may specify a desired video interface
+ according to ../../media/video-interfaces.txt, specifically
+ - bus-width: recognized values are <12>, <16>, <18> and <24>, and
+ override any output mode selection heuristic, forcing "rgb444",
+ "rgb565", "rgb666" and "rgb888" respectively.
+
Example:
hlcdc: hlcdc@f0030000 {
@@ -50,3 +57,19 @@ Example:
#pwm-cells = <3>;
};
};
+
+Example 2: With a video interface override to force rgb565; as above
+but with these changes/additions:
+
+ &hlcdc {
+ hlcdc-display-controller {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>;
+
+ port@0 {
+ hlcdc_panel_output: endpoint@0 {
+ bus-width = <16>;
+ };
+ };
+ };
+ };