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Date:   Sat, 28 Jan 2023 12:23:32 +0530
From:   "Alim Akhtar" <alim.akhtar@...sung.com>
To:     "'Krzysztof Kozlowski'" <krzysztof.kozlowski@...aro.org>,
        "'Rob Herring'" <robh+dt@...nel.org>,
        "'Krzysztof Kozlowski'" <krzysztof.kozlowski+dt@...aro.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Cc:     "'Sam Protsenko'" <semen.protsenko@...aro.org>,
        "'Chanho Park'" <chanho61.park@...sung.com>
Subject: RE: [PATCH 2/6] arm64: dts: exynos: add ADC supply on Exynos7
 Espresso



> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Sent: Friday, January 20, 2023 11:01 PM
> To: Rob Herring <robh+dt@...nel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@...aro.org>; Alim Akhtar
> <alim.akhtar@...sung.com>; devicetree@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-samsung-soc@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Cc: Sam Protsenko <semen.protsenko@...aro.org>; Chanho Park
> <chanho61.park@...sung.com>; Krzysztof Kozlowski
> <krzysztof.kozlowski@...aro.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@...20000: 'vdd-supply' is a required property
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---

Reviewed-by: Alim Akhtar <alim.akhtar@...sung.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


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