From: Mark Brown <broonie@kernel.org>
Date: Tue, 7 Jun 2022 10:53:44 +0000 (+0100)
Subject: Switch to use internal PLL for iMCLK
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2947683c534e45090b669bda06123201ff950c49;p=linux.git

Switch to use internal PLL for iMCLK

Merge series from Hui Wang <hui.wang@canonical.com>:

Taking your advice and try to enable internal PLL to get a more
accurate sample rate. And I also changed the fsl-asoc-card.c to support
the nau8822 codec, now the sound quality is pretty good on my imx6sx
EVB.
---

2947683c534e45090b669bda06123201ff950c49
diff --cc sound/soc/codecs/nau8822.c
index f4f68b549e1ae,fd9c766e277fb..3907d1dd8ceef
--- a/sound/soc/codecs/nau8822.c
+++ b/sound/soc/codecs/nau8822.c
@@@ -726,10 -726,13 +726,17 @@@ static int nau8822_set_pll(struct snd_s
  	struct nau8822_pll *pll_param = &nau8822->pll;
  	int ret, fs;
  
 +	if (freq_in == pll_param->freq_in &&
 +	    freq_out == pll_param->freq_out)
 +		return 0;
 +
+ 	if (freq_out == 0) {
+ 		dev_dbg(component->dev, "PLL disabled\n");
+ 		snd_soc_component_update_bits(component,
+ 			NAU8822_REG_POWER_MANAGEMENT_1, NAU8822_PLL_EN_MASK, NAU8822_PLL_OFF);
+ 		return 0;
+ 	}
+ 
  	fs = freq_out / 256;
  
  	ret = nau8822_calc_pll(freq_in, fs, pll_param);