Hello,
Macbook pro models containing CS8409 for sure are: MBP131 MBP141.I own MBP 14,1 e.g. 2017 model.
I'm attaching working sound configuration from Windows 10 registry (note that the cs420x might need to be ignored or might be important i don't really know). I believe what is really used is in the PinConfigOverride section.
Interesting thing to note is that sound in MacOS is much louder than Bootcamp Windows, would be nice to hear how loud is on linux.
I did convert PinConfigOverride HEX strings to [pincfg] format in the attached hda-jack-retask.fw thanks to Takashi's guidance.
I'm attaching also alsamixer ASCII. Only PCM, no Master ?
What I have tried is execute: hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x@@ hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIRECTION 0x@@ hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x@@ putting @@ from 0x00 to 0x50
Please advise.