linux-kernel - Re: [PATCH 1/2] dt-bindings: iio: afe: current-sense-amplifier: Add io-channel-cells

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Message-ID: <20250904-tangible-practical-partridge-a1b0e4@kuoka>
Date: Thu, 4 Sep 2025 11:17:35 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Primoz Fiser <primoz.fiser@...ik.com>
Cc: Peter Rosin <peda@...ntia.se>, Jonathan Cameron <jic23@...nel.org>, 
	David Lechner <dlechner@...libre.com>, Nuno Sa <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>, Shawn Guo <shawnguo@...nel.org>, 
	Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>, 
	Fabio Estevam <festevam@...il.com>, linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
	upstream@...ts.phytec.de
Subject: Re: [PATCH 1/2] dt-bindings: iio: afe: current-sense-amplifier: Add
 io-channel-cells

On Wed, Sep 03, 2025 at 01:36:59PM +0200, Primoz Fiser wrote:
> The current-sense-amplifier is an IIO provider thus can be referenced by
> IIO consumers (via "io-channels" property in consumer device node). Such
> provider is required to describe number of cells used in phandle lookup
> with "io-channel-cells" property, otherwise the following kernel error
> is present:
> 
>   OF: /iio-hwmon: could not get #io-channel-cells for /current-sense

Also, how can I reproduce this error? Do you paste here real errors or
just some invented ones from some out of tree code (hint: such would not
be relevant).

> 
> Also fixes the following dtbs_check warning:
> 
>   current-sense: '#io-channel-cells' does not match any of the regexes:
>   'pinctrl-[0-9]+' from schema $id:
>   http://devicetree.org/schemas/iio/afe/current-sense-amplifier.yaml#

Best regards,
Krzysztof