Commit 3287a7a8 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
Browse files

ARM: dts: koelsch: Configure pull-up for SOFT_SW GPIO keys 



The GPIO pins connected to the 4 Software Switches ("SOFT_SW", SW2) do
not have external pull-up resistors, but rely on internal pull-ups being
enabled.  Fortunately this is satisfied by the initial state of these
pins.

Make this explicit by enabling bias-pull-up, to remove the dependency on
initial state and/or boot loader configuration.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20210303132941.3938516-1-geert+renesas@glider.be
parent 431c8ae4

arch/arm/boot/dts/r8a7791-koelsch.dts

+8 −0
Original line number Diff line number Diff line
@@ -81,6 +81,9 @@ lbsc { 
	keyboard {

		compatible = "gpio-keys";



		pinctrl-0 = <&sw2_pins>;

		pinctrl-names = "default";



		key-1 {

			gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;

			linux,code = <KEY_1>;
@@ -618,6 +621,11 @@ sound_clk_pins: sound_clk { 
		groups = "audio_clk_a";

		function = "audio_clk";

	};



	sw2_pins: sw2 {

		pins = "GP_5_0", "GP_5_1", "GP_5_2", "GP_5_3";

		bias-pull-up;

	};

};



&ether {