linux-kernel - [PATCH 1/1] dt-bindings: iio: adc: max1238: Add #io-channel-cells property

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Message-Id: <20250818200014.3700738-1-Frank.Li@nxp.com>
Date: Mon, 18 Aug 2025 16:00:13 -0400
From: Frank Li <Frank.Li@....com>
To: Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-iio@...r.kernel.org (open list:IIO SUBSYSTEM AND DRIVERS),
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH 1/1] dt-bindings: iio: adc: max1238: Add #io-channel-cells property

Add #io-channel-cells property because it is multi-channel ADC.

Fix below CHECK_DTBS warnings:
  arch/arm/boot/dts/nxp/ls/ls1021a-iot.dtb: adc@35 (maxim,max1239): '#io-channel-cells' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/iio/adc/maxim,max1238.yaml#

Signed-off-by: Frank Li <Frank.Li@....com>
---
 Documentation/devicetree/bindings/iio/adc/maxim,max1238.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max1238.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max1238.yaml
index 60d7b34e3286f..ae3c89393f1a3 100644
--- a/Documentation/devicetree/bindings/iio/adc/maxim,max1238.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/maxim,max1238.yaml
@@ -53,6 +53,9 @@ properties:
   reg:
     maxItems: 1
 
+  "#io-channel-cells":
+    const: 1
+
   vcc-supply: true
   vref-supply:
     description: Optional external reference.  If not supplied, internal
-- 
2.34.1