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Add GPIO power button support for ODROID-N2 (#1161) (#1165)

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Stefan Agner 2021-01-11 18:14:07 +01:00 committed by GitHub
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commit 2c3c066ea0
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4
Documentation/boards/hardkernel/odroid-n2.md
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@ -12,3 +12,7 @@ eg. `console=ttyAML0,115200n8 console=tty0`
## GPIO
Refer to [the odroid wiki](https://wiki.odroid.com/odroid-n2/hardware/expansion_connectors).
At this point not all functionality is supported by the upstream kernel used
by Home Assistant OS.
The GPIO on pin 11 is used as a low active power button input.

3
buildroot-external/board/hardkernel/odroid-n2/kernel.config
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@ -1 +1,4 @@
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
CONFIG_KEYBOARD_GPIO=y
CONFIG_KEYBOARD_GPIO_POLLED=y

42
buildroot-external/board/hardkernel/patches/linux/0008-arm64-dts-meson-g12b-add-power-button-support.patch Normal file
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@ -0,0 +1,42 @@
From 83ec133319bc8b04fad2bec65ffe95246c600520 Mon Sep 17 00:00:00 2001
Message-Id: <83ec133319bc8b04fad2bec65ffe95246c600520.1610380198.git.stefan@agner.ch>
In-Reply-To: <9d2a2b44e67b0ef49e534c097e8b5e3e1173b033.1610380198.git.stefan@agner.ch>
References: <9d2a2b44e67b0ef49e534c097e8b5e3e1173b033.1610380198.git.stefan@agner.ch>
From: Stefan Agner <stefan@agner.ch>
Date: Mon, 11 Jan 2021 11:20:48 +0100
Subject: [PATCH 08/10] arm64: dts: meson: g12b: add power button support
Add power button support on J2 pin 11 (GPIOX_3 on the SoC side). The
GPIO is low active, e.g. when connecting with pin 9 (GND) a power
button press is triggered.
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
index 445d90d25aa3..ddc7ad9a7d8d 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
@@ -39,6 +39,17 @@ emmc_pwrseq: emmc-pwrseq {
reset-gpios = <&gpio BOOT_12 GPIO_ACTIVE_LOW>;
};
+ gpio-keys-polled {
+ compatible = "gpio-keys-polled";
+ poll-interval = <100>;
+
+ power-button {
+ label = "power";
+ linux,code = <KEY_POWER>;
+ gpios = <&gpio GPIOX_3 GPIO_ACTIVE_LOW>;
+ };
+ };
+
leds {
compatible = "gpio-leds";
--
2.30.0