[Linux-stm32] [PATCH v2 2/5] mmc: mmci: stm32: release the delay block before enabling it

[Christophe KERELLO]

Hello Mateusz,

On 11/4/26 16:27, Mateusz Nowicki wrote:
> From: Christophe Kerello<christophe.kerello at foss.st.com>
>
> The delay block must be locked on the last frequency set. To avoid it
> staying locked on a frequency used before, disable it first and wait for
> the lock to drop before enabling it again.
>
> Fixes: b5c3eb385797 ("mmc: mmci: stm32: add delay block support for STM32MP25")
> Cc:stable at vger.kernel.org
> Signed-off-by: Christophe Kerello<christophe.kerello at foss.st.com>
> [Mateusz: reworded the commit message, added Fixes and Cc stable]
> Signed-off-by: Mateusz Nowicki<mateusz.nowicki at posteo.net>
> ---
>
> Notes:
>      On the STM32MP257F-DK eMMC in HS200 at 150 MHz, switching from DDR52 to
>      HS200 made the tuning pick a wrong phase in 9 of 18 tries without this
>      change, the phase was right in all 12 tries with it.
>
>   drivers/mmc/host/mmci_stm32_sdmmc.c | 12 +++++++++++-
>   1 file changed, 11 insertions(+), 1 deletion(-)

Reviewed-by: Christophe Kerello <christophe.kerello at foss.st.com>

Regards,
Christophe Kerello.