linux-kernel - [PATCH 2/2] dt-bindings: i2c: mux: i2c-demux-pinctrl: Define "i2c-parent" constraints

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Date: Wed, 24 Jan 2024 13:05:51 -0600
From: Rob Herring <robh@...nel.org>
To: Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Andi Shyti <andi.shyti@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: linux-i2c@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] dt-bindings: i2c: mux: i2c-demux-pinctrl: Define "i2c-parent" constraints

The 'phandle-array' type is a bit ambiguous. It can be either just an
array of phandles or an array of phandles plus args. "i2c-parent" is
the former and needs to constrain each entry to a single phandle value.

Signed-off-by: Rob Herring <robh@...nel.org>
---
 Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml b/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml
index dd3d24212551..b813f6d4810c 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml
@@ -40,6 +40,8 @@ properties:
 
   i2c-parent:
     $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      maxItems: 1
     description:
       List of phandles of I2C masters available for selection.  The first one
       will be used as default.
-- 
2.43.0