spi: spi-fsl-lpspi: limit PRESCALE bit in TCR register

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[ Upstream commit 783bf5d09f ]

Referring to the errata ERR051608 of I.MX93, LPSPI TCR[PRESCALE]
can only be configured to be 0 or 1, other values are not valid
and will cause LPSPI to not work.

Add the prescale limitation for LPSPI in I.MX93. Other platforms
are not affected.

Signed-off-by: Carlos Song <carlos.song@nxp.com>
Link: https://patch.msgid.link/20240820070658.672127-1-carlos.song@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Carlos Song 2024-08-20 15:06:58 +08:00 • committed by Greg Kroah-Hartman

parent 32ee052015

commit ff62110ec5

1 changed files with 29 additions and 2 deletions

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drivers/spi/spi-fsl-lpspi.c

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