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authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2019-03-04 23:51:18 +0200
committerLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2019-06-08 02:36:04 +0300
commitf54b4df6b14fb5858bec605aee4356a2e801dddb (patch)
treef153e52681bb227e89587d73e33f2f18064f0eb2 /Documentation/devicetree/bindings/display
parent1ddf2d4ad898e5e793681680489fc4c1173d2d42 (diff)
dt-bindings: display: renesas: lvds: Add renesas,companion property
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@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Diffstat (limited to 'Documentation/devicetree/bindings/display')
-rw-r--r--Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt18
1 files changed, 14 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
index 86a691a5dcf5..c6a196d0b075 100644
--- a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
+++ b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
@@ -46,14 +46,24 @@ 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:
lvds0: lvds@feb90000 {
- compatible = "renesas,r8a7790-lvds";
- reg = <0 0xfeb90000 0 0x1c>;
- clocks = <&cpg CPG_MOD 726>;
- resets = <&cpg 726>;
+ compatible = "renesas,r8a77990-lvds";
+ reg = <0 0xfeb90000 0 0x20>;
+ clocks = <&cpg CPG_MOD 727>;
+ power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
+ resets = <&cpg 727>;
+
+ renesas,companion = <&lvds1>;
ports {
#address-cells = <1>;