linux-kernel - [PATCH v6 2/8] dt-bindings: display, renesas,du: Document cmms property

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Message-Id: <20191016085548.105703-3-jacopo+renesas@jmondi.org>
Date:   Wed, 16 Oct 2019 10:55:42 +0200
From:   Jacopo Mondi <jacopo+renesas@...ndi.org>
To:     laurent.pinchart@...asonboard.com,
        kieran.bingham+renesas@...asonboard.com, geert@...ux-m68k.org,
        horms@...ge.net.au, uli+renesas@...nd.eu
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>, airlied@...ux.ie,
        daniel@...ll.ch, linux-renesas-soc@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v6 2/8] 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.

Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
---
 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 c97dfacad281..3d9809b486b6 100644
--- a/Documentation/devicetree/bindings/display/renesas,du.txt
+++ b/Documentation/devicetree/bindings/display/renesas,du.txt
@@ -45,6 +45,10 @@ Required Properties:
     instance that serves the DU channel, and the channel index identifies the
     LIF instance in that VSP.
 
+  - renesas,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
@@ -91,6 +95,7 @@ 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>;
+		renesas,cmms = <&cmm0>, <&cmm1>, <&cmm2>, <&cmm3>;
 
 		ports {
 			#address-cells = <1>;
-- 
2.23.0