linux-kernel - Re: [PATCH 1/2] dt-bindings: power: supply: gpio-charger: Add status-gpios property

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Date:   Mon, 25 Feb 2019 15:53:17 -0600
From:   Rob Herring <robh@...nel.org>
To:     Artur Rojek <contact@...ur-rojek.eu>
Cc:     Sebastian Reichel <sre@...nel.org>,
        Mark Rutland <mark.rutland@....com>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Paul Cercueil <paul@...pouillou.net>
Subject: Re: [PATCH 1/2] dt-bindings: power: supply: gpio-charger: Add
 status-gpios property

On Tue, Feb 05, 2019 at 08:03:15PM +0100, Artur Rojek wrote:
> Add documentation for the "status-gpios" property.
> 
> Signed-off-by: Artur Rojek <contact@...ur-rojek.eu>
> ---
>  .../devicetree/bindings/power/supply/gpio-charger.txt         | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/power/supply/gpio-charger.txt b/Documentation/devicetree/bindings/power/supply/gpio-charger.txt
> index adbb5dc5b6e9..b98a05a4973c 100644
> --- a/Documentation/devicetree/bindings/power/supply/gpio-charger.txt
> +++ b/Documentation/devicetree/bindings/power/supply/gpio-charger.txt
> @@ -14,12 +14,16 @@ Required properties :
>       usb-cdp (USB charging downstream port)
>       usb-aca (USB accessory charger adapter)
>  
> +Optional properties:
> + - status-gpios: GPIO indicating the charger status

So when it is asserted it has 'status'? What does status mean?

> +
>  Example:
>  
>  	usb_charger: charger {
>  		compatible = "gpio-charger";
>  		charger-type = "usb-sdp";
>  		gpios = <&gpf0 2 0 0 0>;
> +		status-gpios = <&gpf0 3 0 0 0>;

Humm, not sure what the thinking for 'gpios' was, but it's wrong and you 
just copied it. If we follow the normal cell encoding with 2 cells, this 
means the property takes 3 gpios (though the last 2 are marked not 
present with 0).

Rob