diff options
| author | Shengjiu Wang <shengjiu.wang@freescale.com> | 2015-04-15 12:33:06 +0800 |
|---|---|---|
| committer | Frank Li <Frank.Li@freescale.com> | 2015-04-24 23:04:10 +0800 |
| commit | 14aa32474b855625c3ee039f7319f46d23336ad9 (patch) | |
| tree | 3f2274b2081af87d10c55baab19d3dc0b79fb4e9 | |
| parent | 5a46e1ecaf265bd372e6a9ef328fdb4e8ebc8d3c (diff) | |
MLK-10661: ASoC: imx_wm8960: HDMI has noise after playback with wm8960
The root cause is hardware issue. In imx7d-sdb hdmi, wm8960 use the
same SAI interface. After playback with wm8960, the Frame clock voltage
doesn't become 0v, wm8960 will introduce noise to frame clock.
This patch is a workaround to set wm8960 to slave mode, remove
interference to I2S signal.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
| -rw-r--r-- | sound/soc/fsl/imx-wm8960.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/soc/fsl/imx-wm8960.c b/sound/soc/fsl/imx-wm8960.c index e77136ef7ee5..6184a276456f 100644 --- a/sound/soc/fsl/imx-wm8960.c +++ b/sound/soc/fsl/imx-wm8960.c @@ -195,8 +195,10 @@ static int imx_hifi_hw_free(struct snd_pcm_substream *substream) data->is_stream_in_use[tx] = false; /* Power down PLL to save power*/ - if (data->is_codec_master && !data->is_stream_in_use[!tx]) + if (data->is_codec_master && !data->is_stream_in_use[!tx]) { snd_soc_dai_set_pll(codec_dai, 0, 0, 0, 0); + snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF); + } return 0; } |