Linux kernel development work - see feature branches https://git.zx2c4.com/linux-dev/atom/sound/soc/codecs/cs4234.h?h=linus%2Fmaster 2020-09-28T16:59:06Z 2020-09-28T16:59:06Z Lucas Tanure tanureal@opensource.cirrus.com 2020-09-28T11:18:21Z urn:sha1:d4edae9c508c845d92bd59c60c4089c3addad6a8 The CS4234 is a highly versatile CODEC that combines 4 channels of high performance analog to digital conversion, 4 channels of high performance digital to analog conversion for audio, and 1 channel of digital to analog conversion to provide a nondelayed audio reference signal to an external Class H tracking power supply. DAC5 is only supported as a 5th audio channel. Tracking Power Supply mode is not currently supported by the driver. In DSP_A mode the slots for DAC1-4 and optionally DAC5 can be set. The codec always claims 4 slots for DAC1-4 and these must be in the same nibble of the mask. The codec has a fixed mapping for ADC slots. In I2S/LJ modes the codec has a fixed mapping for DAC1-4 and ADC1-4. DAC5 is not available in these modes. The MCLK source must be preset to a valid frequency before probe() because it must be running all the time the codec is out of reset. The VA_SEL bit will be set automatically to 3.3v or 5v during probe() based on the reported voltage of the regulator supplying VA. Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://lore.kernel.org/r/20200928111821.26967-2-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>