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ARM: dts: stm32: add joystick support on stm32mp157c-ev1 

The joystick (B1) on stm32mp157c-ev1 uses gpios on STMFX gpio expander.
These gpios need a pin configuration (push-pull and bias-pull-down),
described under stmfx_pinctrl node.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
This commit is contained in:
Amelie Delaunay 2019-05-10 09:49:55 +02:00 committed by Alexandre Torgue
parent 98c2663b38
commit 2619646b52
1 changed files with 44 additions and 0 deletions
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44
arch/arm/boot/dts/stm32mp157c-ev1.dts
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@ -7,6 +7,7 @@
#include "stm32mp157c-ed1.dts"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
/ {
model = "STMicroelectronics STM32MP157C eval daughter on eval mother";
@ -21,6 +22,43 @@
ethernet0 = &ethernet0;
};
joystick {
compatible = "gpio-keys";
#size-cells = <0>;
pinctrl-0 = <&joystick_pins>;
pinctrl-names = "default";
button-0 {
label = "JoySel";
linux,code = <KEY_ENTER>;
interrupt-parent = <&stmfx_pinctrl>;
interrupts = <0 IRQ_TYPE_EDGE_RISING>;
};
button-1 {
label = "JoyDown";
linux,code = <KEY_DOWN>;
interrupt-parent = <&stmfx_pinctrl>;
interrupts = <1 IRQ_TYPE_EDGE_RISING>;
};
button-2 {
label = "JoyLeft";
linux,code = <KEY_LEFT>;
interrupt-parent = <&stmfx_pinctrl>;
interrupts = <2 IRQ_TYPE_EDGE_RISING>;
};
button-3 {
label = "JoyRight";
linux,code = <KEY_RIGHT>;
interrupt-parent = <&stmfx_pinctrl>;
interrupts = <3 IRQ_TYPE_EDGE_RISING>;
};
button-4 {
label = "JoyUp";
linux,code = <KEY_UP>;
interrupt-parent = <&stmfx_pinctrl>;
interrupts = <4 IRQ_TYPE_EDGE_RISING>;
};
};
panel_backlight: panel-backlight {
compatible = "gpio-backlight";
gpios = <&gpiod 13 GPIO_ACTIVE_LOW>;
@ -114,6 +152,12 @@
interrupt-controller;
#interrupt-cells = <2>;
gpio-ranges = <&stmfx_pinctrl 0 0 24>;
joystick_pins: joystick {
pins = "gpio0", "gpio1", "gpio2", "gpio3", "gpio4";
drive-push-pull;
bias-pull-down;
};
};
};
};