Since the ad193x codecs have no software reset, we have to reinitialize the registers after a hardware reset. For example, if we change the device-tree between these resets, changing the audio format of the DAI link from DSP_A with 8 TDM channels to I2S 2 channels, DAC Control 1 register will remain configured for 8 channels. This patch resets this register at probe to its default value.
Signed-off-by: Codrin Ciubotariu codrin.ciubotariu@microchip.com --- sound/soc/codecs/ad193x.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c index 3ebc0524f4b2..cda435562a1d 100644 --- a/sound/soc/codecs/ad193x.c +++ b/sound/soc/codecs/ad193x.c @@ -427,6 +427,8 @@ static int ad193x_component_probe(struct snd_soc_component *component) regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A); /* dac in tdm mode */ regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40); + /* reset DAC ctrl1 */ + regmap_write(ad193x->regmap, AD193X_DAC_CTRL1, 0x00);
/* adc only */ if (ad193x_has_adc(ad193x)) {