[PATCH v2 0/4] spi: stm32: stability & performance enhancements

[Alexandre TORGUE]

Hi

On 12/18/25 11:48, Alain Volmat wrote:
> The series fixes a stability issue when dealing with <8bpw
> transfers, as well as enforce an error if the DMA information
> provided within the DT are incorrect.
> 
> Performance enhancement is also provided by allowing a polling
> mode which is triggered when the transfer is so short that
> polling mode transfer would lead to faster transfer than
> if it was done in a interrupt driven manner.
> 
> Signed-off-by: Alain Volmat <alain.volmat at foss.st.com>
> ---
> Changes in v2:
> - reordered commits, putting fix commits first in the series.
> - no changes done in commits.
> - Link to v1: https://lore.kernel.org/r/20251217-stm32-spi-enhancements-v1-0-943348b8ff66@foss.st.com
> 
> ---
> Alain Volmat (3):
>        spi: stm32: properly fail on dma_request_chan error
>        spi: stm32: perform small transfer in polling mode
>        ARM: dts: stm32: add spi1 sleep state pinctrl on stm32mp157c-ev1
> 
> Deepak Kumar (1):
>        spi: stm32: fix Overrun issue at < 8bpw
> 
>   arch/arm/boot/dts/st/stm32mp157c-ev1.dts |   3 +-
>   drivers/spi/spi-stm32.c                  | 106 +++++++++++++++++++++++++++----
>   2 files changed, 96 insertions(+), 13 deletions(-)
> ---
> base-commit: 865a1f17d5e41c0b34929afcab0afa6bdb90d33e
> change-id: 20251213-stm32-spi-enhancements-29da9bc29133
> 
> Best regards,

DT patch applied on stm32-next.

Regards
Alex