Re: [PATCH 1/8] ARM: dts: microchip: sam9x60_curiosity: Add power-supply properties for sdmmc nodes

From: Krzysztof Kozlowski
Date: Tue Jan 23 2024 - 03:46:35 EST


On 23/01/2024 09:31, Mihai Sain wrote:
> The sdmmc0 and sdmmc1 controllers are powered from 3.3V regulator.
> Add vmmc-supply and vqmmc-supply properties to sdmmc nodes.
>
> Signed-off-by: Mihai Sain <mihai.sain@xxxxxxxxxxxxx>
> ---
> arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
> index c6fbdd29019f..457c54dde0b7 100644
> --- a/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
> +++ b/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
> @@ -452,6 +452,8 @@ &sdmmc0 {
> pinctrl-0 = <&pinctrl_sdmmc0_default &pinctrl_sdmmc0_cd>;
> cd-gpios = <&pioA 25 GPIO_ACTIVE_LOW>;
> disable-wp;
> + vmmc-supply = <&vdd1_3v3>;
> + vqmmc-supply = <&vdd1_3v3>;

For this and all other patches:

It is surprising that you use the same supply for both. Looks like
inaccurate description. It is possible, but I think unlikely because
usually VQMMC has lower voltage than 3.3V.

Best regards,
Krzysztof