diff options
| author | Ben Zhang <benzh@chromium.org> | 2014-12-10 17:44:18 -0800 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-04-10 20:21:34 +0200 |
| commit | b7f328f6a2a9985a66f6df603e46cda531f933c4 (patch) | |
| tree | b5f89c2f7ed4bdbc694a019b567a5bc0b4a7d929 /src/mainboard/ibm | |
| parent | 99e952d480ec9c1a874556f3b3681c6342c29f4b (diff) | |
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>
Diffstat (limited to 'src/mainboard/ibm')
0 files changed, 0 insertions, 0 deletions