The Renesas R-Car Gen2 and Gen3 SoCs have internal LVDS encoders. Add
corresponding device tree bindings.
Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
Reviewed-by: Rob Herring <r...@kernel.org>
---
Changes since v1:
- Move the SoC name before the IP name in compatible strings
- Rename parallel input to parallel RGB input
- Fixed "renesas,r8a7743-lvds" description
- Document the resets property
- Fixed typo
---
.../bindings/display/bridge/renesas,lvds.txt | 56 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 57 insertions(+)
create mode 100644
Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
new file mode 100644
index 000000000000..2b19ce51ec07
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
@@ -0,0 +1,56 @@
+Renesas R-Car LVDS Encoder
+==========================
+
+These DT bindings describe the LVDS encoder embedded in the Renesas R-Car
+Gen2, R-Car Gen3 and RZ/G SoCs.
+
+Required properties:
+
+- compatible : Shall contain one of
+ - "renesas,r8a7743-lvds" for R8A7743 (RZ/G1M) compatible LVDS encoders
+ - "renesas,r8a7790-lvds" for R8A7790 (R-Car H2) compatible LVDS encoders
+ - "renesas,r8a7791-lvds" for R8A7791 (R-Car M2-W) compatible LVDS encoders
+ - "renesas,r8a7793-lvds" for R8A7791 (R-Car M2-N) compatible LVDS encoders
+ - "renesas,r8a7795-lvds" for R8A7795 (R-Car H3) compatible LVDS encoders
+ - "renesas,r8a7796-lvds" for R8A7796 (R-Car M3-W) compatible LVDS encoders
+
+- reg: Base address and length for the memory-mapped registers
+- clocks: A phandle + clock-specifier pair for the functional clock
+- resets: A phandle + reset specifier for the module reset
+
+Required nodes:
+
+The LVDS encoder has two video ports. Their connections are modelled using the
+OF graph bindings specified in Documentation/devicetree/bindings/graph.txt.
+
+- Video port 0 corresponds to the parallel RGB input
+- Video port 1 corresponds to the LVDS output
+
+Each port shall have a single endpoint.
+
+
+Example:
+
+ lvds0: lvds@feb90000 {
+ compatible = "renesas,r8a7790-lvds";
+ reg = <0 0xfeb90000 0 0x1c>;
+ clocks = <&cpg CPG_MOD 726>;
+ resets = <&cpg 726>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds0_in: endpoint {
+ remote-endpoint = <&du_out_lvds0>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ lvds0_out: endpoint {
+ };
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 2afba909724c..13c8ec11135a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4744,6 +4744,7 @@ F: drivers/gpu/drm/rcar-du/
F: drivers/gpu/drm/shmobile/
F: include/linux/platform_data/shmob_drm.h
F: Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.txt
+F: Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
F: Documentation/devicetree/bindings/display/renesas,du.txt
DRM DRIVERS FOR ROCKCHIP
--
Regards,
Laurent Pinchart
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