[PATCH v4 03/10] dt-bindings: gpio: gpio-axp209: add pinctrl features

[Linus Walleij]

On Fri, Dec 1, 2017 at 2:44 PM, Quentin Schulz
<quentin.schulz at free-electrons.com> wrote:

> The X-Powers AXP209 has 3 GPIOs. GPIO0/1 can each act either as a GPIO,
> an ADC or a LDO regulator. GPIO2 can only act as a GPIO.
>
> This adds the pinctrl features to the driver so GPIO0/1 can be used as
> ADC or LDO regulator.
>
> Signed-off-by: Quentin Schulz <quentin.schulz at free-electrons.com>
> Acked-by: Rob Herring <robh at kernel.org>

Please add a reference to the generic pinctrl bindings and state that you
use them and how.

pinctrl/pinctrl-bindings.txt

> +The GPIOs can be muxed to other functions and therefore, must be a subnode of
> +axp_gpio.
> +
> +Example:
> +
> +&axp_gpio {
> +       gpio0_adc: gpio0-adc {
> +               pins = "GPIO0";
> +               function = "adc";
> +       };
> +};

So write explicitly that this driver employs the per-pin muxing pattern.

Yours,
Linus Walleij