Re: [PATCH 2/3] ARM: dts: imx6: phycore-som: fix emmc supply

Stefan Riedmüller
2019-12-05T12:00:45Z

Hi Marco,

On 29.11.19 17:48, Marco Felsch wrote:
> Currently the vmmc is supplied by the 1.8V pmic rail but this is wrong.
> The 1.8V pmic rail is connected to the emmc vccq (vqmmc).

I just checked the schematics again and actually both VCC and VCCQ are
connected to the 3.3V power rail. VCCQ can be connected to the 1.8V PMIC
power rail by solder jumper but default is 3.3V.

So I think either both should be connected to a fixed 3.3V regulator or
removed, since the default system does not support switching these voltages.

Regards,
Stefan

>
> Fixes: ddec5d1c0047 ("ARM: dts: imx6: Add initial support for phyCORE-i.MX 6 SOM")
> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
> ---
> arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi
> index 46d4953c5588..44e333848b4d 100644
> --- a/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi
> @@ -183,7 +183,7 @@
> pinctrl-0 = <&pinctrl_usdhc4>;
> bus-width = <8>;
> non-removable;
> - vmmc-supply = <&vdd_emmc_1p8>;
> + vqmmc-supply = <&vdd_emmc_1p8>;
> status = "disabled";
> };