RE: [PATCH 2/6] arm64: dts: exynos: add ADC supply on Exynos7 Espresso

[Alim Akhtar]

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> Sent: Friday, January 20, 2023 11:01 PM
> To: Rob Herring <robh+dt@xxxxxxxxxx>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@xxxxxxxxxx>; Alim Akhtar
> <alim.akhtar@xxxxxxxxxxx>; devicetree@xxxxxxxxxxxxxxx; linux-arm-
> kernel@xxxxxxxxxxxxxxxxxxx; linux-samsung-soc@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx
> Cc: Sam Protsenko <semen.protsenko@xxxxxxxxxx>; Chanho Park
> <chanho61.park@xxxxxxxxxxx>; Krzysztof Kozlowski
> <krzysztof.kozlowski@xxxxxxxxxx>
> Subject: [PATCH 2/6] arm64: dts: exynos: add ADC supply on Exynos7
> Espresso
> 
> 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:
> 
Yes, it is LDO3 for exynos7_espresso board as well.

>   exynos7-espresso.dtb: adc@13620000: 'vdd-supply' is a required property
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> ---

Reviewed-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>

>  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