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 <[email protected]>
---
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
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 <[email protected]>
> ---
> 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
On 4/10/21 9:35 PM, 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 <[email protected]>
> ---
> 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>;
>
Hi Grzegorz
Applied on stm32-next.
Thanks.
Alex