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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)
commit5894b91d1e700f38b4157df143be1502cf08daa8
tree2cdd0cf276e9ab6f1af6d9cf2dbe660b046b1235tree | snapshot
parent2ea659a9ef488125eb46da6eb571de5eae5c43f6commit | 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
Linux kernel for KaRo TX COM modules