Valentin Caron 45e028accb spi: stm32: add a delay before SPI disable
[ Upstream commit 6de8a70c84ee0586fdde4e671626b9caca6aed74 ]

As explained in errata sheet, in section "2.14.5 Truncation of SPI output
signals after EOT event":
On STM32MP1x, EOT interrupt can be thrown before the true end of
communication.

So we add a delay of a half period to wait the real end of the
transmission.

Link: https://www.st.com/resource/en/errata_sheet/es0539-stm32mp131x3x5x-device-errata-stmicroelectronics.pdf
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Link: https://lore.kernel.org/r/20230906132735.748174-1-valentin.caron@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-10-06 13:18:17 +02:00
..
2023-03-10 09:39:27 +01:00
2020-10-08 23:00:06 +01:00
2022-04-08 14:22:53 +02:00
2020-10-24 10:33:08 -07:00
2021-08-26 12:09:38 +01:00