ASoC: wm8994: Lower AIFnCLK divisor when dropping to 32kHz (cd22000a) · Commits · 戴 / test

When lowering SYSCLK to 50kHz for accessory detection also lower the AIFnCLK divisor to normalise the clocking configuration within the device. This will not disrupt audio as we cannot support active audio with such a low SYSCLK. Signed-off-by:

Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8994.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -2258,6 +2258,18 @@ out:

		configure_clock(codec);

		/*
		* If SYSCLK will be less than 50kHz adjust AIFnCLK dividers
		* for detection.
		*/
		if (max(wm8994->aifclk[0], wm8994->aifclk[1]) < 50000) {
		dev_dbg(codec->dev, "Configuring AIFs for 128fs\n");
		snd_soc_update_bits(codec, WM8994_AIF1_RATE,
		WM8994_AIF1CLK_RATE_MASK, 0x1);
		snd_soc_update_bits(codec, WM8994_AIF2_RATE,
		WM8994_AIF2CLK_RATE_MASK, 0x1);
		}

		return 0;
		}

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