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