On 4/17/25 10:47, Fabian Pflug wrote:
> The regulator for the usdhc2 references the BUCK4 as its input.
> The BUCK4 is part of the pca9451, which in turn is not a regulator
> in barebox, so there is a problem during initialisation:
>
> WARNING: imx-esdhc 42860000....@42860000.of: Failed to get 'vmmc' regulator
> (ignored)
>
> Since the dependency could not be resolved, the reg_usdhc2_vmmc
> regulator is not correctly initialized, leaving the gpio in a floating
> state, which results in the GPIO being low, which in turn disables
> the SD-Card.
>
> Signed-off-by: Fabian Pflug <f.pf...@pengutronix.de>
Reviewed-by: Ahmad Fatoum <a.fat...@pengutronix.de>
Thanks,
Ahmad
> ---
> arch/arm/dts/imx93-tqma93xx.dtsi | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm/dts/imx93-tqma93xx.dtsi
> b/arch/arm/dts/imx93-tqma93xx.dtsi
> index 40425e39a7..aafeadc275 100644
> --- a/arch/arm/dts/imx93-tqma93xx.dtsi
> +++ b/arch/arm/dts/imx93-tqma93xx.dtsi
> @@ -15,6 +15,9 @@ pca9451a: pmic@25 {
> reg = <0x25>;
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_pca9451>;
> + regulators {
> + barebox,allow-dummy-supply;
> + };
> };
> };
>
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