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In-Reply-To: <20240214-mbly-gpio-v1-2-f88c0ccf372b@bootlin.com>
From: Linus Walleij <linus.walleij@linaro.org>
Date: Mon, 19 Feb 2024 15:50:59 +0100
Message-ID: <CACRpkdawXwae7GKf4zOfVUJPLgLOeEX-8w5fbnr8O6FXuZHuaw@mail.gmail.com>
Subject: Re: [PATCH 02/23] dt-bindings: gpio: nomadik: add optional ngpios property
To: =?UTF-8?B?VGjDqW8gTGVicnVu?= <theo.lebrun@bootlin.com>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>, Rob Herring <robh+dt@kernel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, 
	Philipp Zabel <p.zabel@pengutronix.de>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, 
	linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, 
	linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
	linux-mips@vger.kernel.org, Gregory CLEMENT <gregory.clement@bootlin.com>, 
	Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>, 
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>, Tawfik Bayouk <tawfik.bayouk@mobileye.com>
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On Wed, Feb 14, 2024 at 5:24=E2=80=AFPM Th=C3=A9o Lebrun <theo.lebrun@bootl=
in.com> wrote:

> This GPIO controller can support a lesser number of GPIOs than 32.
> Express that in devicetree using an optional, generic property.
>
> Signed-off-by: Th=C3=A9o Lebrun <theo.lebrun@bootlin.com>
> ---
>  Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml =
b/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml
> index a999908173d2..bbd23daed229 100644
> --- a/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml
> +++ b/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml
> @@ -50,6 +50,10 @@ properties:
>    gpio-ranges:
>      maxItems: 1
>
> +  ngpios:
> +    minimum: 0
> +    maximum: 32

I can't help but wonder what good is ngpios =3D <0>; but OK.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij