linux-kernel - Re: [PATCH 1/2] dt-bindings: cros-ec: Add properties for GPIO controller

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Date: Tue, 20 Feb 2024 12:46:59 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Stephen Boyd <swboyd@...omium.org>
Cc: Lee Jones <lee@...nel.org>, linux-kernel@...r.kernel.org, patches@...ts.linux.dev, 
	devicetree@...r.kernel.org, chrome-platform@...ts.linux.dev, 
	Douglas Anderson <dianders@...omium.org>, Pin-yen Lin <treapking@...omium.org>, 
	Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Benson Leung <bleung@...omium.org>, Guenter Roeck <groeck@...omium.org>
Subject: Re: [PATCH 1/2] dt-bindings: cros-ec: Add properties for GPIO controller

On Mon, Feb 19, 2024 at 9:23 PM Stephen Boyd <swboyd@...omium.org> wrote:
>
> The ChromeOS embedded controller (EC) supports setting the state of
> GPIOs when the system is unlocked, and getting the state of GPIOs in all
> cases. The GPIOs are on the EC itself, so the EC acts similar to a GPIO
> expander. Add the #gpio-cells and gpio-controller properties to the
> cros-ec binding so that other devices described in DT can get the GPIOs
> on the EC.
>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Bartosz Golaszewski <brgl@...ev.pl>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
> Cc: Conor Dooley <conor+dt@...nel.org>
> Cc: Lee Jones <lee@...nel.org>
> Cc: Benson Leung <bleung@...omium.org>
> Cc: Guenter Roeck <groeck@...omium.org>
> Cc: <devicetree@...r.kernel.org>
> Cc: <chrome-platform@...ts.linux.dev>
> Cc: Pin-yen Lin <treapking@...omium.org>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---
>  Documentation/devicetree/bindings/mfd/google,cros-ec.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> index e1ca4f297c6d..aac8819bd00b 100644
> --- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> +++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> @@ -93,6 +93,11 @@ properties:
>    '#size-cells':
>      const: 0
>
> +  '#gpio-cells':
> +    const: 2
> +
> +  gpio-controller: true
> +
>    typec:
>      $ref: /schemas/chrome/google,cros-ec-typec.yaml#
>
> @@ -275,6 +280,8 @@ examples:
>              interrupts = <99 0>;
>              interrupt-parent = <&gpio7>;
>              spi-max-frequency = <5000000>;
> +            #gpio-cells = <2>;
> +            gpio-controller;
>
>              proximity {
>                  compatible = "google,cros-ec-mkbp-proximity";
> --
> https://chromeos.dev
>

Applied, thanks!

Bart