[PATCH 1/1] riscv: add DT binding for BOOT button on Maix board
Heinrich Schuchardt
xypron.glpk at gmx.de
Wed Sep 2 22:11:59 CEST 2020
Add a device tree binding for the BOOT button on the Maix board.
Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
Together with
[PATCH 1/1] cmd/button: return button status
https://lists.denx.de/pipermail/u-boot/2020-September/425221.html
we can use the button status to decide which program to boot.
---
arch/riscv/dts/k210-maix-bit.dts | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/riscv/dts/k210-maix-bit.dts b/arch/riscv/dts/k210-maix-bit.dts
index e840e04ada..c2beec602c 100644
--- a/arch/riscv/dts/k210-maix-bit.dts
+++ b/arch/riscv/dts/k210-maix-bit.dts
@@ -8,6 +8,7 @@
#include "k210.dtsi"
#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
/ {
model = "Sipeed Maix Bit 2.0";
@@ -33,6 +34,16 @@
};
};
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ boot {
+ label = "BOOT";
+ linux,code = <BTN_0>;
+ gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+ };
+ };
+
sound {
compatible = "simple-audio-card";
simple-audio-card,format = "i2s";
--
2.28.0
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