There is updated information available from the coreboot/Chromebook community:
Baytrail/Braswell devices seem to have audio issues when booting via RW_LEGACY, because depthcharge (the ChromeOS payload) is still doing some initialization to the audio codec
There is updated information available from the coreboot/Chromebook community:
Baytrail/Braswell devices seem to have audio issues when booting via RW_LEGACY, because depthcharge (the ChromeOS payload) is still doing some initialization to the audio codec