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

Alim Akhtar
2023-01-28T06:53:57Z

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Sent: Friday, January 20, 2023 11:01 PM
> To: Rob Herring <robh+dt@kernel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@linaro.org>; Alim Akhtar
> <alim.akhtar@samsung.com>; devicetree@vger.kernel.org; linux-arm-
> kernel@lists.infradead.org; linux-samsung-soc@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Cc: Sam Protsenko <semen.protsenko@linaro.org>; Chanho Park
> <chanho61.park@samsung.com>; Krzysztof Kozlowski
> <krzysztof.kozlowski@linaro.org>
> 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@linaro.org>
> ---

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

> 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