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ASoC: rockchip: ignore 0Hz sysclk

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This patch ignores sysclk setting if it is 0Hz.

Some codecs treat 0Hz sysclk as signal of applying no constraints.
This driver does not have such feature but current implementation
outputs 'Failed to set mclk' error message if machine driver sets
0Hz sysclk to this driver.

Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Link: https://lore.kernel.org/r/20190907174332.19586-1-katsuhiro@katsuster.net
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Katsuhiro Suzuki 2019-09-08 02:43:32 +09:00 committed by Mark Brown
parent 78b93b0477
commit f1879d7b98
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1 changed files with 3 additions and 0 deletions
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3
sound/soc/rockchip/rockchip_i2s.c
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@ -419,6 +419,9 @@ static int rockchip_i2s_set_sysclk(struct snd_soc_dai *cpu_dai, int clk_id,
struct rk_i2s_dev *i2s = to_info(cpu_dai);
int ret;
if (freq == 0)
return 0;
ret = clk_set_rate(i2s->mclk, freq);
if (ret)
dev_err(i2s->dev, "Fail to set mclk %d\n", ret);