samus: Use codec internal 1.8V as DACREF source
This is needed for audio playback after we disconnect PP1800_CODEC
from DACREF to avoid noise coupled on PP1800_CODEC, which makes
recording noisy.
For recording, DACREF comes from mic vref pump voltage.
For playback, DACREF comes from internal 1.8V.
BUG=chrome-os-partner:32953
BRANCH=samus
TEST=Set MICBIAS to 2.970V on Samus, playback/recording is clean
Change-Id: I65fb6dbfab54c7c4de6496fd4a0d666baead28ec
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: 3e62a61f6cf6042f6d653a827698b55ac86e2d2b
Original-Change-Id: I27430691e469dd7f4056d99438ce080062b58b9a
Original-Signed-off-by: Ben Zhang <benzh@chromium.org>
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/241179
Reviewed-on: http://review.coreboot.org/9500
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed