From f54b4df6b14fb5858bec605aee4356a2e801dddb Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 4 Mar 2019 23:51:18 +0200 Subject: 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 Reviewed-by: Jacopo Mondi Tested-by: Jacopo Mondi Acked-by: Sam Ravnborg Reviewed-by: Kieran Bingham --- .../bindings/display/bridge/renesas,lvds.txt | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) (limited to 'Documentation') 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>; -- cgit v1.2.3