On Sat, Apr 10, 2021 at 09:35:21PM +0200, Grzegorz Szymaszek wrote:
> The microSD card detect pin is physically connected to the MPU pin PI3.
> The Device Tree configuration of the card detect pin was wrong—it was
> set to pin PB7 instead. If such configuration was used, the kernel would
> hang on “Waiting for root device” when booting from a microSD card.
>
> Signed-off-by: Grzegorz Szymaszek <gszymaszek@xxxxxxxx>
> ---
> arch/arm/boot/dts/stm32mp157c-odyssey.dts | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/stm32mp157c-odyssey.dts b/arch/arm/boot/dts/stm32mp157c-odyssey.dts
> index a7ffec8f1516..be1dd5e9e744 100644
> --- a/arch/arm/boot/dts/stm32mp157c-odyssey.dts
> +++ b/arch/arm/boot/dts/stm32mp157c-odyssey.dts
> @@ -64,7 +64,7 @@ &sdmmc1 {
> pinctrl-0 = <&sdmmc1_b4_pins_a>;
> pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
> pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
> - cd-gpios = <&gpiob 7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
> + cd-gpios = <&gpioi 3 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
> disable-wp;
> st,neg-edge;
> bus-width = <4>;
> --
> 2.30.2
>
A gentle ping. FWIW, there was another patch that would deal with the
same issue:
<https://st-md-mailman.stormreply.com/pipermail/linux-stm32/2021-April/011132.html>,
but it took the more radical approach of of replacing cd-gpios with
broken-cd.
--
Grzegorz
