spi: ma35d1-qspi: Move speed setting to bus configuration

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The speed setting is wrongly placed inside the "setup transfer" helper,
since the bus configuration may require the speed to be correct. Indeed,
DTR mode (not yet available) divides by 2 the bus clock when enabled. As
a result, to remain at a constant clock speed (and improve the data
rate), we must double the bus clock when enabling DTR. In order to
prepare for this change, move all the bus configuration required for
each step of the operation inside a unique helper called
nuvoton_qspi_configure_bus().

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20260813-perso-ma35d1-upstream-qspi-v1-2-b217b9870eb1@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Miquel Raynal 2026-08-13 10:00:22 +02:00 • committed by Mark Brown

parent dc72e9e8cd

commit b5671d865e

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drivers/spi/spi-ma35d1-qspi.c

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