ADC requires supply and it seems LDO3 (same as on Exynos5433 TM2 boards) fits in voltage range of 1.8 V. Use it to silence warning: exynos7-espresso.dtb: adc@13620000: 'vdd-supply' is a required property Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts index 829657c9c7ca..abb3bd700d6f 100644 --- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts +++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts @@ -78,6 +78,7 @@ &watchdog { }; &adc { + vdd-supply = <&ldo3_reg>; status = "okay"; }; -- 2.34.1