[PATCH v3 04/10] dt-bindings: display: renesas: lvds: Add renesas, companion property

[Laurent Pinchart]

Add a new optional renesas,companion property to point to the companion
LVDS encoder. This is used to support dual-link operation where the main
LVDS encoder splits even-numbered and odd-numbered pixels between the
two LVDS encoders.

The new property doesn't control the mode of operation, it only
describes the relationship between the master and companion LVDS
encoders.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo at jmondi.org>
Tested-by: Jacopo Mondi <jacopo+renesas at jmondi.org>
---
Changes since v2:

- Clarify when the companion property is required or not allowed

Changes since v1:

- Fixed typo
---
 .../devicetree/bindings/display/bridge/renesas,lvds.txt    | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
index 900a884ad9f5..2d24bd8cbec5 100644
--- a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
+++ b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
@@ -45,6 +45,13 @@ OF graph bindings specified in Documentation/devicetree/bindings/graph.txt.
 
 Each port shall have a single endpoint.
 
+Optional properties:
+
+- renesas,companion : phandle to the companion LVDS encoder. This property is
+  mandatory for the first LVDS encoder on D3 and E3 SoCs, and shall point to
+  the second encoder to be used as a companion in dual-link mode. It shall not
+  be set for any other LVDS encoder.
+
 
 Example:
 
-- 
Regards,

Laurent Pinchart