[PATCH v2 4/4] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: add Function key support
From: Nick Xie <hidden>
Date: 2026-03-23 01:35:10
Also in:
linux-amlogic, linux-devicetree, linux-iio, lkml
Subsystem:
arm/amlogic meson soc support, the rest · Maintainers:
Neil Armstrong, Kevin Hilman, Linus Torvalds
Enable the SARADC controller and add the adc-keys node to support the Function key found on the Khadas VIM1S board. Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Nick Xie <redacted> --- .../amlogic/meson-s4-s905y4-khadas-vim1s.dts | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index 664d64a267f2d..792ab45c4c944 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts@@ -40,6 +40,20 @@ secmon_reserved: secmon@5000000 { }; }; + adc-keys { + compatible = "adc-keys"; + io-channels = <&saradc 0>; + io-channel-names = "buttons"; + keyup-threshold-microvolt = <1710000>; + poll-interval = <100>; + + button-function { + label = "Function"; + linux,code = <KEY_FN>; + press-threshold-microvolt = <10000>; + }; + }; + emmc_pwrseq: emmc-pwrseq { compatible = "mmc-pwrseq-emmc"; reset-gpios = <&gpio GPIOB_9 GPIO_ACTIVE_LOW>;
@@ -278,6 +292,11 @@ brcmf: wifi@1 { }; }; +&saradc { + status = "okay"; + vref-supply = <&vddio_ao1v8>; +}; + &spicc0 { status = "okay"; pinctrl-names = "default";
--
2.34.1