From: Martin Blumenstingl martin.blumenstingl@googlemail.com
[ Upstream commit fd6643142a0c5ab4d423ed7173a0be414d509214 ]
Odroid-C1 exposes ADC channels 0 and 1 on the GPIO headers. NOTE: Due to the SoC design these are limited to 1.8V (instead of 3.3V like all other pins). Enable the SAR ADC to enable voltage measurements on these pins.
Signed-off-by: Martin Blumenstingl martin.blumenstingl@googlemail.com Signed-off-by: Kevin Hilman khilman@baylibre.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/dts/meson8b-odroidc1.dts | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts index 8fdeeffecbdbc..8a09071d712a5 100644 --- a/arch/arm/boot/dts/meson8b-odroidc1.dts +++ b/arch/arm/boot/dts/meson8b-odroidc1.dts @@ -153,6 +153,11 @@ pinctrl-names = "default"; };
+&saradc { + status = "okay"; + vref-supply = <&vcc_1v8>; +}; + &sdio { status = "okay";