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| author |   Karsten Merker <merker@debian.org> | 2015-12-10 21:31:59 +0100 |
|---|---|---|
| committer |   Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-12-11 09:21:07 +0100 |
| commit | 15228f04de82c2f6d893926423b71c9ce8c4200e (patch) | |
| tree | 523037a47755ab5d87c05841deaf23409a228799 /arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts | |
| parent | ARM: dts: sun9i: cubieboard4: Enable Reduced Serial Bus controller (diff) | |
| download | linux-dev-15228f04de82c2f6d893926423b71c9ce8c4200e.tar.xz linux-dev-15228f04de82c2f6d893926423b71c9ce8c4200e.zip | |
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: Karsten Merker <merker@debian.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts')
| -rw-r--r-- | arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts b/arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts index a91879ed07f8..beccb25e88bf 100644 --- a/arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts +++ b/arch/arm/boot/dts/sun7i-a20-olimex-som-evb.dts @@ -1,5 +1,6 @@ /* * 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 = <®_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>; |