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ASoC: rockchip: i2s: add a delay before i2s clear
authorSugar Zhang <sugar.zhang@rock-chips.com>
Fri, 9 Jun 2017 08:52:46 +0000 (16:52 +0800)
committerMark Brown <broonie@kernel.org>
Tue, 13 Jun 2017 20:48:03 +0000 (21:48 +0100)
commitf07f38a6ab20907413d1de8584c6e46b4d091626
tree2cdd0cf276e9ab6f1af6d9cf2dbe660b046b1235tree | snapshot
parent81e0e7134ab085ac5d0890177bfed38a0f2be4f8commit | diff
ASoC: rockchip: i2s: add a delay before i2s clear

in order to guarantee i2s lrck signal integrity, when i2s stop,
need at least one lrck cycle to ensure signal integrity.

the max delay time is when lrck is 8khz, the delay time is
125us(1/8khz), using udelay(150) with a 25us margin.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/rockchip/rockchip_i2s.c diff | blob | history
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