[PATCH v3 01/14] dt-bindings: display: renesas, cmm: Add R-Car CMM documentation

[Jacopo Mondi]

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 at jmondi.org>
---
 .../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 at 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