Re: [PATCH 05/13] arm64: dts: freescale: imx93-phycore-som: Add eMMC no-1-8-v by default

Frank Li
2025-04-10T15:01:37Z

On Thu, Apr 10, 2025 at 11:02:43AM +0200, Primoz Fiser wrote:
> Add property 'no-1-8-v' by default to usdhc1 (eMMC) node. Bootloader
> will take care of deleting the property in case SOM supports HS400 mode
> (1.8V IO voltage feature flag has to be set in the EEPROM).

what means of EEPROM here?

Generally eMMC worked fixed voltage, why need 'no-1-8-v' here, even no
HS400 support.

Frank
>
> Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
> ---
> arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
> index 3d84eed33074..d6589d26c875 100644
> --- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
> @@ -172,6 +172,7 @@ &usdhc1 {
> pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
> bus-width = <8>;
> non-removable;
> + no-1-8-v;
> status = "okay";
> };
>
> --
> 2.34.1
>