diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2014-11-27 16:01:59 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-11-27 18:42:16 +0100 |
| commit | d206f66177ab7cd69d79c7e01b43f45d935f43dd (patch) | |
| tree | d34bdbbdf2d7aa7e4992ab6ec5d4a77889e11dc0 /sound/soc/mxs | |
| parent | Linux 3.18-rc1 (diff) | |
| download | linux-d206f66177ab7cd69d79c7e01b43f45d935f43dd.tar.xz linux-d206f66177ab7cd69d79c7e01b43f45d935f43dd.zip | |
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.c | 7 |
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) { |