I try to add a reset gpio button on Raspberry Pi 3B, i try add the following code into /arch/arm/boot/dts/bcm2710-rpi-3-b.dts.
&keys {
compatible = "gpio-keys-polled";
poll-interval = <20>;
reset {
label = "reset";
gpios = <&gpio 28 0>;
linux,code = <0x198>;
};
};
But when i build with make -j1 V=s, it report eror:
Error: arch/arm64/boot/dts/broadcom/../../../../arm/boot/dts/bcm2710-rpi-3-b.dts:190.1-6 Label or path keys not found
FATAL ERROR: Syntax error parsing input tree
scripts/Makefile.lib:294: recipe for target 'arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b.dtb' failed
make[7]: *** [arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b.dtb] Error 1
scripts/Makefile.build:544: recipe for target 'arch/arm64/boot/dts/broadcom' failed
make[6]: *** [arch/arm64/boot/dts/broadcom] Error 2
arch/arm64/Makefile:140: recipe for target 'dtbs' failed
What should I do?