spi: sun6i: add quirk for dual and quad SPI modes support

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New Allwinner's SPI controllers can support dual and quad SPI modes.
To enable one of these modes, we should set the corresponding bit in
the SUN6I_BURST_CTL_CNT_REG register. DRM (28 bits) for dual mode and
Quad_EN (29 bits) for quad transmission.

Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com>
Link: https://lore.kernel.org/r/20230624131632.2972546-2-bigunclemax@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Maksim Kiselev 2023-06-24 16:16:22 +03:00 • committed by Mark Brown

parent 06c2afb862

commit 0605d9fb41

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drivers/spi/spi-sun6i.c

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