On Thu, 02 Feb 2017 18:02:15 +0100, Takashi Iwai wrote:
The audio chicken bit (register offset 0x62f38) seems required to make DP audio working on some machines. At least, on Dell Wyse 3040, I failed to get the audio unless this bit is set once.
Strangely, the bit seems necessary only once, and it persists after that, even some power-off cycles. The register is supposedly write-only, so it's no evidence whether the bit keeps effect persistently. But, judging from the experiment, it looks enough to set it up once at the device initialization.
The patch is basically a cut from the original patch by Pierre-Louis Bossart.
Cc: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai tiwai@suse.de
Sorry, this one is just a resend by mistake (I forgot to clean up while sending the other patch series). Please disregard.
Takashi