linux-kernel - Re: [PATCH v4 1/3] dt-bindings: pinctrl: bcm2835-gpio: Add generic pinctrl support

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Date:   Sun, 18 Mar 2018 07:48:20 -0500
From:   Rob Herring <robh@...nel.org>
To:     Matheus Castello <matheus@...tello.eng.br>
Cc:     stefan.wahren@...e.com, eric@...olt.net, linus.walleij@...aro.org,
        mark.rutland@....com, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v4 1/3] dt-bindings: pinctrl: bcm2835-gpio: Add generic
 pinctrl support

On Fri, Mar 09, 2018 at 01:13:58PM -0400, Matheus Castello wrote:
> Added generic pin configuration and multiplexing support,
> and shoud be preferred than brcm legacy one.
> 
> Signed-off-by: Matheus Castello <matheus@...tello.eng.br>
> ---
>  .../devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt b/Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt
> index 2569866..58b4720 100644
> --- a/Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt
> +++ b/Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt
> @@ -36,6 +36,25 @@ listed. In other words, a subnode that lists only a mux function implies no
>  information about any pull configuration. Similarly, a subnode that lists only
>  a pul parameter implies no information about the mux function.
>  
> +This driver supports the generic pin multiplexing and configuration

Bindings describe h/w, not drivers.

> +bindings. For details on each properties, you can refer to
> +./pinctrl-bindings.txt.
> +
> +Required sub-node properties:
> +  - pins
> +  - function
> +
> +Optional sub-node properties:
> +  - bias-disable
> +  - bias-pull-up
> +  - bias-pull-down
> +  - output-high
> +  - output-low
> +
> +Legacy pin configuration and multiplexing binding:
> +*** (Its use is deprecated, use generic multiplexing and configuration
> +bindings instead)
> +
>  Required subnode-properties:
>  - brcm,pins: An array of cells. Each cell contains the ID of a pin. Valid IDs
>    are the integer GPIO IDs; 0==GPIO0, 1==GPIO1, ... 53==GPIO53.
> -- 
> 2.7.4
>