On Mon, Feb 12, 2018 at 02:17:01PM +0100, Linus Walleij wrote:
> Instead of passing a global GPIO number, pass a descriptor looked
> up with the standard devm_gpiod_get_optional() call.
> 
> We have augmented the GPIO core to look up the regulator special
> GPIO "wlf,ldoena" in a separate patch.
> 
> Cc: patc...@opensource.cirrus.com
> Cc: Richard Fitzgerald <r...@opensource.cirrus.com>
> Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
> ---
> -     config.ena_gpio = pdata->ldoena;
> +     /* We assume that high output = regulator off */
> +     config.ena_gpiod = devm_gpiod_get_optional(&pdev->dev, "wlf,ldoena",
> +                                                GPIOD_OUT_HIGH);
> +     if (IS_ERR(config.ena_gpiod))
> +             return PTR_ERR(config.ena_gpiod);

Also looking at this more you will need to you
devm_gpio_get_from_of_node here since the device tree binding is
for wlf,ldoena not wlf,ldoena-gpio. So this patch currently
breaks the binding.

Thanks,
Charles

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