spi: mediatek: add tick_delay support
This patch support tick_delay setting, some users need use high-speed spi speed, which can use tick_delay to tuning spi clk timing. Signed-off-by: Mason Zhang <Mason.Zhang@mediatek.com> Link: https://lore.kernel.org/r/20210713114048.29509-1-mason.zhang@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>
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