Add device tree bindings documentation for the Renesas R-Car Display
Unit Color Management Module.
CMM is the image enhancement module available on each R-Car DU video
channel on R-Car Gen2 and Gen3 SoCs (V3H and V3M excluded).
Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
---
.../bindings/display/renesas,cmm.txt | 33 +++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/renesas,cmm.txt
diff --git a/Documentation/devicetree/bindings/display/renesas,cmm.txt b/Documentation/devicetree/bindings/display/renesas,cmm.txt
new file mode 100644
index 000000000000..bc599b69c278
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/renesas,cmm.txt
@@ -0,0 +1,33 @@
+* Renesas R-Car Color Management Module (CMM)
+
+Renesas R-Car image enhancement module connected to R-Car DU video channels.
+
+Required properties:
+ - compatible: shall be one or more of the following:
+ - "renesas,cmm-r8a7795": for R8A7795 (R-Car H3) compatible CMM.
+ - "renesas,cmm-r8a7796": for R8A7796 (R-Car M3-W) compatible CMM.
+ - "renesas,cmm-r8a77965": for R8A77965 (R-Car M3-N) compatible CMM.
+ - "renesas,cmm-r8a77990": for R8A77990 (R-Car E3) compatible CMM.
+ - "renesas,cmm-r8a77995": for R8A77995 (R-Car D3) compatible CMM.
+ - "renesas,rcar-gen3-cmm": for a generic R-Car Gen3 compatible CMM.
+ - "renesas,rcar-gen2-cmm": for a generic R-Car Gen2 compatible CMM.
+
+ When the generic compatible string is specified, the SoC-specific
+ version corresponding to the platform should be listed first.
+
+ - reg: the address base and length of the memory area where CMM control
+ registers are mapped to.
+
+ - clocks: phandle and clock-specifier pair to the CMM functional clock
+ supplier.
+
+Example:
+--------
+
+ cmm0: cmm@fea40000 {
+ compatible = "renesas,cmm-r8a7796";
+ reg = <0 0xfea40000 0 0x1000>;
+ power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
+ clocks = <&cpg CPG_MOD 711>;
+ resets = <&cpg 711>;
+ };
--
2.22.0
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