[PATCH] ARM: dts: stm32: Reinstate card detect behavior on DHSOM

[Patrick DELAUNAY]

Hi Marek,

> From: Marek Vasut <marex at denx.de>
> Sent: jeudi 18 juin 2020 20:35
> 
> The cd-gpios with (GPIO_ACTIVE_LOW | GPIO_PULL_UP) gpio is thus far
> unsupported, reinstate the old cd-gpios behavior until this handling is fully
> implemented. This permits the DHSOM to boot from SD again, without this patch
> the card detect fails.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Patrick Delaunay <patrick.delaunay at st.com>
> Cc: Patrice Chotard <patrice.chotard at st.com>
> ---
>  arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
> b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
> index 75d75266e8..df63ad4a24 100644
> --- a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
> +++ b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
> @@ -273,6 +273,9 @@
> 
>  &sdmmc1 {
>  	u-boot,dm-spl;
> +	broken-cd;
> +	/delete-property/ cd-gpios;
> +	/delete-property/ disable-wp;
>  };
> 
>  &sdmmc1_b4_pins_a {
> --
> 2.27.0

Reviewed-by: Patrick Delaunay <patrick.delaunay at st.com>

This fix should be included in v2020.07....
So I will prepare a pull request.

Just for information: I assumed that PULL_UP was correctly managed when I update the device tree.

Support is added in ucalss  by the serie with the patches
788ea834124 ("gpio: add function _dm_gpio_set_dir_flags")
477ca57b9a5 ("gpio: add support of new GPIO direction flag")

But I forget that the driver part wasn't yet accepted / merged in master branch.

http://patchwork.ozlabs.org/project/uboot/list/?series=181294

In particular the commit "gpio: stm32: add ops set_dir_flags"

Today I target this serie in v2020.10 after review
(I think it is late v2020.07 as it is impacting STM32MP MPU and STM32 MCU)

Sorry for disturbance....

Thanks

Patrick