> From: Cristian Birsan <cristian.birsan@xxxxxxxxxxxxx>
>
> Add no-1-8-v property to sdmmc0 node to keep VDDSDMMC power rail at 3.3V.
> This property will stop the LDO regulator from switching to 1.8V when the
> MMC core detects an UHS SD Card. VDDSDMMC power rail is used by all the
> SDMMC interface pins in GPIO mode (PA0 - PA13).
>
> On this board, PA6 is used as GPIO to enable the power switch controlling
> USB Vbus for the USB Host. The change is needed to fix the PA6 voltage
> level to 3.3V instead of 1.8V.
>
> Fixes: d85c4229e925 ("ARM: dts: at91: sama5d29_curiosity: Add device tree for sama5d29_curiosity board")
> Suggested-by: Mihai Sain <mihai.sain@xxxxxxxxxxxxx>
> Signed-off-by: Cristian Birsan <cristian.birsan@xxxxxxxxxxxxx>
Hi,
Tested-by: Andrei Simion <andrei.simion@xxxxxxxxxxxxx>
> ---
> arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts
> index 951a0c97d3c6..5933840bb8f7 100644
> --- a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts
> +++ b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts
> @@ -514,6 +514,7 @@ kernel@200000 {
>
> &sdmmc0 {
> bus-width = <4>;
> + no-1-8-v;
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_sdmmc0_default>;
> disable-wp;
Best Regards,
--
Andrei Simion
