[PATCH 5/6] ARM: dts: stm32: add joystick support on stm32746g-eval

Hi Amelie,

thanks for your patch.

On Thu, Feb 8, 2018 at 3:27 PM, Amelie Delaunay [off-list ref] wrote:

The joystick on stm32746g-eval uses gpios on MFX gpio expander.

Signed-off-by: Amelie Delaunay <redacted>

(...)

+       joystick {
+               compatible = "gpio-keys";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               button at 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