linux-kernel - Re: [PATCH 03/13] dt-bindings: extcon: document Samsung S2M series PMIC extcon device

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Message-ID: <20251113-game-willpower-5ca93ea62cd0@spud>
Date: Thu, 13 Nov 2025 19:54:37 +0000
From: Conor Dooley <conor@...nel.org>
To: Kaustabh Chakraborty <kauschluss@...root.org>
Cc: Lee Jones <lee@...nel.org>, Pavel Machek <pavel@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Sebastian Reichel <sre@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	André Draszik <andre.draszik@...aro.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Jonathan Corbet <corbet@....net>, linux-leds@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-rtc@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH 03/13] dt-bindings: extcon: document Samsung S2M series
 PMIC extcon device

On Fri, Nov 14, 2025 at 12:35:04AM +0530, Kaustabh Chakraborty wrote:
> Certain Samsung S2M series PMICs have a MUIC device which reports
> various cable states by measuring the ID-GND resistance with an internal
> ADC. Document the devicetree schema for this device.
> 
> The initial driver introduced has support for S2MU005, add its
> compatible as well.
> 
> Signed-off-by: Kaustabh Chakraborty <kauschluss@...root.org>
> ---
>  .../bindings/extcon/samsung,s2mu005-muic.yaml      | 35 ++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/extcon/samsung,s2mu005-muic.yaml b/Documentation/devicetree/bindings/extcon/samsung,s2mu005-muic.yaml
> new file mode 100644
> index 000000000000..8511bb96b47a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/extcon/samsung,s2mu005-muic.yaml
> @@ -0,0 +1,35 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/extcon/samsung,s2mu005-muic.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Extcon Driver for Samsung S2M series PMICs
> +
> +maintainers:
> +  - Kaustabh Chakraborty <kauschluss@...root.org>
> +
> +description: |
> +  The Samsung S2M series PMIC extcon device is a USB port accessory
> +  detector. It reports multiple states depending on the ID-GND
> +  resistance measured by an internal ADC.
> +
> +  This is a part of device tree bindings for S2M and S5M family of Power
> +  Management IC (PMIC).
> +
> +  See also Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml for
> +  additional information and example.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - samsung,s2mu005-muic

Why does this need a dedicated child node for just a port property?

> +
> +  port:
> +    $ref: /schemas/graph.yaml#/properties/port
> +
> +required:
> +  - compatible
> +  - port
> +
> +additionalProperties: false
> 
> -- 
> 2.51.2
> 

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