Useful for beating cases where an output mode selection heuristic
fails.

Signed-off-by: Peter Rosin <p...@axentia.se>
---
 Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt 
b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
index 82f2acb3d374..dc478455b883 100644
--- a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
+++ b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
@@ -10,6 +10,10 @@ Required properties:
  - #address-cells: should be set to 1.
  - #size-cells: should be set to 0.
 
+Optional properties:
+ - output-mode: override any output mode selection hueristic and force a
+   particular output mode. One of "rgb444", "rgb565", "rgb666" and "rgb888".
+
 Required children nodes:
  Children nodes are encoding available output ports and their connections
  to external devices using the OF graph reprensentation (see ../graph.txt).
-- 
2.11.0

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