diff options
| author | Casper Chang <casper_chang@wistron.corp-partner.google.com> | 2022-05-18 19:06:09 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-05-20 16:43:03 +0000 |
| commit | 55c1e7f858edb939555fbf02223de3e7d020a2a6 (patch) | |
| tree | bee8dda996840ac23cdb89872a6d50cdaf6589ae /src/mainboard | |
| parent | f5cd9a15bac9b691cb7563abd6b9bae8588b1bca (diff) | |
mb/google/brya: Disable PCH USB2 phy power gating for primus
The patch disables PCH USB2 Phy power gating to prevent possible display
flicker issue for primus board. Please refer Intel doc#723158 for
more information.
BUG=b:221461379
TEST=Verify the build for primus board
Signed-off-by: Casper Chang <casper_chang@wistron.corp-partner.google.com>
Change-Id: I4d7d52bdeafe8b1b55822b5c8d040c94ce1f3878
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64463
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/brya/variants/primus/overridetree.cb | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/primus/overridetree.cb b/src/mainboard/google/brya/variants/primus/overridetree.cb index 80a456b32c..48f8adca4b 100644 --- a/src/mainboard/google/brya/variants/primus/overridetree.cb +++ b/src/mainboard/google/brya/variants/primus/overridetree.cb @@ -26,6 +26,10 @@ chip soc/intel/alderlake register "sagv" = "SaGv_Enabled" register "max_dram_speed_mts" = "3733" + # As per Intel Advisory doc#723158, the change is required to prevent possible + # display flickering issue. + register "usb2_phy_sus_pg_disable" = "1" + # Acoustic settings register "acoustic_noise_mitigation" = "1" register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_8" |