diff options
| author | Bard Liao <yung-chuan.liao@linux.intel.com> | 2024-04-11 17:03:47 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-04-14 16:54:32 +0900 |
| commit | dcc2cd8000d11a046680a7476b0d96b0b956454a (patch) | |
| tree | 81ea69b31300b067be0cb4f72b8e6bdded17ab8c /sound/soc/intel/boards | |
| parent | ca571e5a2e45b1a4113af2370fd1cf895f0b46d4 (diff) | |
ASoC: Intel: sof_rt5682: use RT5682S_PLL1 if needed
When 96KHz sample rate is used, and MCLK is 24.576MHz, we will need
pll_in = 24576000 and pll_out = 49152000 which is not supported by
RT5682S_PLL2. Use RT5682S_PLL1 in this case.
We don't test sample rate because RT5682S_PLL2 doesn't support 24.576MHz
input and in the MCLK = 24.576MHz, sample rate = 48KHz case, i.e.
pll_in == pll_out, PLL will not be used at all.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20240411220347.131267-13-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/intel/boards')
| -rw-r--r-- | sound/soc/intel/boards/sof_rt5682.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sound/soc/intel/boards/sof_rt5682.c b/sound/soc/intel/boards/sof_rt5682.c index 735e07ea62bd..062012de3de2 100644 --- a/sound/soc/intel/boards/sof_rt5682.c +++ b/sound/soc/intel/boards/sof_rt5682.c @@ -340,8 +340,19 @@ static int sof_rt5682_hw_params(struct snd_pcm_substream *substream, clk_id = RT5682_SCLK_S_PLL1; break; case CODEC_RT5682S: - pll_id = RT5682S_PLL2; - clk_id = RT5682S_SCLK_S_PLL2; + /* + * For MCLK = 24.576MHz and sample rate = 96KHz case, use PLL1 We don't test + * pll_out or params_rate() here since rt5682s PLL2 doesn't support 24.576MHz + * input, so we have no choice but to use PLL1. Besides, we will not use PLL at + * all if pll_in == pll_out. ex, MCLK = 24.576Mhz and sample rate = 48KHz + */ + if (pll_in == 24576000) { + pll_id = RT5682S_PLL1; + clk_id = RT5682S_SCLK_S_PLL1; + } else { + pll_id = RT5682S_PLL2; + clk_id = RT5682S_SCLK_S_PLL2; + } break; default: dev_err(rtd->dev, "invalid codec type %d\n", ctx->codec_type); |