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Commit 2619646b authored by Amelie Delaunay's avatar Amelie Delaunay Committed by Alexandre Torgue
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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: default avatarAmelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: default avatarAlexandre Torgue <alexandre.torgue@st.com>
parent 98c2663b

arch/arm/boot/dts/stm32mp157c-ev1.dts

+44 −0
Original line number Diff line number Diff line
@@ -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;

			};

		};

	};

};