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ARM: dts: stm32: Add GPIO keys for STM32MP1 DHCOM PDK2 

Add bindings for the four GPIO keys on DH PDK2 board. Note that TA1
key is polled because it's IRQ line conflicts with ethernet IRQ, the
rest of the GPIO keys, TA2, TA3, TA4, are interrupt-driven and wake
up sources.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
This commit is contained in:
Marek Vasut 2020-05-13 20:10:17 +02:00 committed by Alexandre Torgue
parent f0c2df217c
commit 87cabf9405
1 changed files with 43 additions and 0 deletions
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43
arch/arm/boot/dts/stm32mp157c-dhcom-pdk2.dts
View File

@ -4,6 +4,7 @@
*/
#include "stm32mp157c-dhcom-som.dtsi"
#include <dt-bindings/input/input.h>
#include <dt-bindings/pwm/pwm.h>
/ {
@ -46,6 +47,48 @@
regulator-boot-on;
};
gpio-keys-polled {
compatible = "gpio-keys-polled";
#size-cells = <0>;
poll-interval = <20>;
/*
* The EXTi IRQ line 3 is shared with touchscreen and ethernet,
* so mark this as polled GPIO key.
*/
button-0 {
label = "TA1-GPIO-A";
linux,code = <KEY_A>;
gpios = <&gpiof 3 GPIO_ACTIVE_LOW>;
};
};
gpio-keys {
compatible = "gpio-keys";
#size-cells = <0>;
button-1 {
label = "TA2-GPIO-B";
linux,code = <KEY_B>;
gpios = <&gpiod 6 GPIO_ACTIVE_LOW>;
wakeup-source;
};
button-2 {
label = "TA3-GPIO-C";
linux,code = <KEY_C>;
gpios = <&gpioi 11 GPIO_ACTIVE_LOW>;
wakeup-source;
};
button-3 {
label = "TA4-GPIO-D";
linux,code = <KEY_D>;
gpios = <&gpiod 12 GPIO_ACTIVE_LOW>;
wakeup-source;
};
};
panel {
compatible = "edt,etm0700g0edh6";
backlight = <&display_bl>;