Re: [PATCH v2 11/12] ASoC: rt5677: Set ADC clock to use PLL and enable ASRC

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 2019-10-18 22:04, Curtis Malainey wrote:
Use the PLL to kept the correct 24M clock rate so frequency shift does
not occur when using the DSP VAD.


+static int bdw_rt5677_dsp_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_PLL1, 24576000,
+		SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		dev_err(rtd->dev, "can't set codec sysclk configuration\n");
+		return ret;
+	}
+	ret = snd_soc_dai_set_pll(codec_dai, 0, RT5677_PLL1_S_MCLK,
+		24000000, 24576000);
+	if (ret < 0) {
+		dev_err(rtd->dev, "can't set codec pll configuration\n");
+		return ret;

nitpick: you may skip "return ret" here and drop parenthesis as function's final line does the job.

+	}
+
+	return ret;

If you decide to stick with leaving above as is, explicitly returning 0 would be preferred.

+}
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
https://mailman.alsa-project.org/mailman/listinfo/alsa-devel



[Index of Archives]     [ALSA User]     [Linux Audio Users]     [Pulse Audio]     [Kernel Archive]     [Asterisk PBX]     [Photo Sharing]     [Linux Sound]     [Video 4 Linux]     [Gimp]     [Yosemite News]

  Powered by Linux