ASoC: Intel: sof_rt5682: add 512FS MCLK clock configuration

codec system clock source support 512FS MCLK synchronous directly, so
no need to set PLL configuration when MCLK 24.576MHz.
Suggested-by: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Mac Chiang <mac.chiang@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220120054012.15849-1-mac.chiang@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/sof_rt5682.c

@@ -369,11 +369,16 @@ static int sof_rt5682_hw_params(struct snd_pcm_substream *substream,
 
 	pll_out = params_rate(params) * 512;
 
-	/* Configure pll for codec */
-	ret = snd_soc_dai_set_pll(codec_dai, pll_id, pll_source, pll_in,
-				  pll_out);
-	if (ret < 0)
-		dev_err(rtd->dev, "snd_soc_dai_set_pll err = %d\n", ret);
+	/* when MCLK is 512FS, no need to set PLL configuration additionally. */
+	if (pll_in == pll_out)
+		clk_id = RT5682S_SCLK_S_MCLK;
+	else {
+		/* Configure pll for codec */
+		ret = snd_soc_dai_set_pll(codec_dai, pll_id, pll_source, pll_in,
+					  pll_out);
+		if (ret < 0)
+			dev_err(rtd->dev, "snd_soc_dai_set_pll err = %d\n", ret);
+	}
 
 	/* Configure sysclk for codec */
 	ret = snd_soc_dai_set_sysclk(codec_dai, clk_id,