spi: rockchip-sfc: Optimize the judgment mechanism completed by the controller

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There is very little data left in fifo, and the controller will
complete the transmission in a short period of time, so
use readl_poll_timeout() for busy wait 10us to accelerate response.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Link: https://patch.msgid.link/20241203013513.2628810-1-jon.lin@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Jon Lin 2024-12-03 09:35:13 +08:00 • committed by Mark Brown

parent ba257e7006

commit 577f1cf76c

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drivers/spi/spi-rockchip-sfc.c

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