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Date:   Sat,  6 Jul 2019 16:07:29 +0200
From:   Jacopo Mondi <>
Cc:     Jacopo Mondi <>,,,,,,,
Subject: [PATCH v2 02/19] dt-bindings: display, renesas,du: Document cmms property

Document the newly added 'cmms' property which accepts a list of phandle
and channel index pairs that point to the CMM units available for each
Display Unit output video channel.

Signed-off-by: Jacopo Mondi <>
Reviewed-by: Laurent Pinchart <>
 Documentation/devicetree/bindings/display/renesas,du.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/renesas,du.txt b/Documentation/devicetree/bindings/display/renesas,du.txt
index aedb22b4d161..0f42af5b91cf 100644
--- a/Documentation/devicetree/bindings/display/renesas,du.txt
+++ b/Documentation/devicetree/bindings/display/renesas,du.txt
@@ -44,6 +44,10 @@ Required Properties:
     instance that serves the DU channel, and the channel index identifies the
     LIF instance in that VSP.
+  - cmms: A list of phandles to the CMM instances present in the SoC, one
+    for each available DU channel. The property shall not be specified for
+    SoCs that do not provide any CMM (such as V3M and V3H).
 Required nodes:
 The connections to the DU output video ports are modeled using the OF graph
@@ -89,6 +93,7 @@ Example: R8A7795 (R-Car H3) ES2.0 DU
 			 <&cpg CPG_MOD 721>;
 		clock-names = "du.0", "du.1", "du.2", "du.3";
 		vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
+		cmms = <&cmm0 &cmm1 &cmm2 &cmm3>;
 		ports {
 			#address-cells = <1>;

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