Commit 15228f04 authored by Karsten Merker's avatar Karsten Merker Committed by Maxime Ripard
Browse files

ARM: dts: sun7i: Olimex A20-SOM-EVB: Add LRADC keys 



The Olimex A20-SOM-EVB is an evaluation board for the Olimex
A20-SOM system-on-module.  It provides a set of android-style
buttons (labeled "VOL+", "VOL-", "MENU", "SEARCH", "HOME", "ESC"
and "ENTER") which are connected to a low-resolution ADC via a
resistor network.

This patch adds appropriate button definitions to the board
dts. The voltages assigned to the keys are specified in the
board schematics published by the manufacturer.

Signed-off-by: default avatarKarsten Merker <merker@debian.org>
Acked-by: default avatarChen-Yu Tsai <wens@csie.org>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent 6f353f61

arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts

+56 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2015 - Marcus Cooper <codekipper@gmail.com>

 * Copyright 2015 - Karsten Merker <merker@debian.org>

 *

 * This file is dual-licensed: you can use it either under the terms

 * of the GPL or the X11 license, at your option. Note that this dual
@@ -45,6 +46,7 @@ 
#include "sunxi-common-regulators.dtsi"



#include <dt-bindings/gpio/gpio.h>

#include <dt-bindings/input/input.h>

#include <dt-bindings/interrupt-controller/irq.h>

#include <dt-bindings/pinctrl/sun4i-a10.h>
@@ -114,6 +116,60 @@ 
	};

};



&lradc {

	vref-supply = <&reg_vcc3v0>;

	status = "okay";



	button@190 {

		label = "Volume Up";

		linux,code = <KEY_VOLUMEUP>;

		channel = <0>;

		voltage = <190000>;

	};



	button@390 {

		label = "Volume Down";

		linux,code = <KEY_VOLUMEDOWN>;

		channel = <0>;

		voltage = <390000>;

	};



	button@600 {

		label = "Menu";

		linux,code = <KEY_MENU>;

		channel = <0>;

		voltage = <600000>;

	};



	button@800 {

		label = "Search";

		linux,code = <KEY_SEARCH>;

		channel = <0>;

		voltage = <800000>;

	};



	button@980 {

		label = "Home";

		linux,code = <KEY_HOMEPAGE>;

		channel = <0>;

		voltage = <980000>;

	};



	button@1180 {

		label = "Esc";

		linux,code = <KEY_ESC>;

		channel = <0>;

		voltage = <1180000>;

	};



	button@1400 {

		label = "Enter";

		linux,code = <KEY_ENTER>;

		channel = <0>;

		voltage = <1400000>;

	};

};



&mmc0 {

	pinctrl-names = "default";

	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_reference_design>;

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