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authorFabio Estevam <fabio.estevam@freescale.com>2014-11-27 18:01:59 +0300
committerMark Brown <broonie@kernel.org>2014-11-27 20:42:16 +0300
commitd206f66177ab7cd69d79c7e01b43f45d935f43dd (patch)
treed34bdbbdf2d7aa7e4992ab6ec5d4a77889e11dc0 /sound/soc/mxs
parentf114040e3ea6e07372334ade75d1ee0775c355e1 (diff)
downloadlinux-d206f66177ab7cd69d79c7e01b43f45d935f43dd.tar.xz
ASoC: mxs-sgtl5000: Remove MCLK restriction
According to the sgtl5000 datasheet the MCLK frequency range restriction of 8 to 27 MHz only applies when the PLL is used - synchronous SYS_MCLK input mode. mxs-sgtl5000 machine sets the codec as slave, and mx28 generates MCLK in the range of 256*fs, 384*fs or 512*fs, which is called asynchronous SYS_MCLK input. In asynchronous SYS_MCLK we cannot have the 8 to 27 MHz check because if we want to play a 8KHz sample rate track, with a MCLK of 8k * 512 = 4.096MHz the current check would return -EINVAL, which is not correct. Remove the 8 to 27MHz frequency check, since this only applies to the synchronous SYS_MCLK input case. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/mxs')
-rw-r--r--sound/soc/mxs/mxs-sgtl5000.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/sound/soc/mxs/mxs-sgtl5000.c b/sound/soc/mxs/mxs-sgtl5000.c
index 61822cc53bd3..3bba6cfe4f29 100644
--- a/sound/soc/mxs/mxs-sgtl5000.c
+++ b/sound/soc/mxs/mxs-sgtl5000.c
@@ -49,13 +49,6 @@ static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
break;
}
- /* Sgtl5000 sysclk should be >= 8MHz and <= 27M */
- if (mclk < 8000000 || mclk > 27000000) {
- dev_err(codec_dai->dev, "Invalid mclk frequency: %u.%03uMHz\n",
- mclk / 1000000, mclk / 1000 % 1000);
- return -EINVAL;
- }
-
/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
if (ret) {