Re: [PATCH 5/6] ARM: dts: stm32: add joystick support on stm32746g-eval
From: Linus Walleij
Date: Thu Feb 22 2018 - 08:52:53 EST
Hi Amelie,
thanks for your patch.
On Thu, Feb 8, 2018 at 3:27 PM, Amelie Delaunay <amelie.delaunay@xxxxxx> wrote:
> The joystick on stm32746g-eval uses gpios on MFX gpio expander.
>
> Signed-off-by: Amelie Delaunay <amelie.delaunay@xxxxxx>
(...)
> + joystick {
> + compatible = "gpio-keys";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + button@1 {
> + label = "JoySel";
> + linux,code = <KEY_ENTER>;
> + gpios = <&mfxgpio 0 (GPIO_ACTIVE_LOW | GPIO_IN_PUSH_PULL | GPIO_PULL_UP)>;
> + };
As I think this should not all be handled by GPIO, the joystick on
gpio-keys needs a pin control handle pointing back to pin control
states on the respective pins in the pin control/GPIO driver,
where it can set up these properties.
For the individual lines the pushing and pulling flags should be
removed.
Yours,
Linus Walleij