linux-kernel - Re: [PATCH v2 1/3] dt-bindings: mfd: sy7636a: Add missing gpio pins and supply

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Message-ID: <aMGdH7Ab+9t/v3CB@lizhi-Precision-Tower-5810>
Date: Wed, 10 Sep 2025 11:45:35 -0400
From: Frank Li <Frank.li@....com>
To: Andreas Kemnade <akemnade@...nel.org>
Cc: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Alistair Francis <alistair@...stair23.me>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 1/3] dt-bindings: mfd: sy7636a: Add missing gpio pins
 and supply

On Tue, Sep 09, 2025 at 10:33:02PM +0200, Andreas Kemnade wrote:
> To be able to fully describe how the SY7636A is connected to the system,
> add properties for the EN and VCOM_EN pins. To squeeze out every bit
> of unused current, in many devices it is possible to power off the
> complete chip. Add an input regulator to allow that.
>
> Signed-off-by: Andreas Kemnade <akemnade@...nel.org>
> ---
>  .../devicetree/bindings/mfd/silergy,sy7636a.yaml         | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml b/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml
> index ee0be32ac0204..054b97dd0c5c7 100644
> --- a/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml
> +++ b/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml
> @@ -32,6 +32,22 @@ properties:
>        Specifying the power good GPIOs.
>      maxItems: 1
>
> +  enable-gpios:
> +    description:
> +      If EN pin is not hardwired, specify it here to have it set up.

Need descript function of enabel-gpios, you can ref data sheet sy7636a.

"enable-gpios" is good self documented by property name, needn't
description at all.

> +    maxItems: 1
> +
> +  vcom-en-gpios:
> +    description:
> +      If VCOM_EN pin is not hardwired, specify it here to have it set up.
> +    maxItems: 1
> +
> +  vin-supply:
> +    description:
> +      Supply for the chip. Some vendor kernels and devicetrees declare this
> +      as a GPIO named "pwrall" which does not exist in the datasheet,
> +      disabling it makes the chip disappear on the bus.
> +

The same here, descript function. such as power supply for whole chip.

Frank

>    regulators:
>      type: object
>
>
> --
> 2.39.5
>