diff options
| author | Ren Kuo <ren.kuo@quanta.corp-partner.google.com> | 2022-06-22 16:08:40 +0800 |
|---|---|---|
| committer | Martin L Roth <gaumless@tutanota.com> | 2022-06-24 03:02:03 +0000 |
| commit | 4b5a98d8d597250692d11b3a17e8448fea77d8f0 (patch) | |
| tree | e4168f4a3977f2cafb159138945d5a27f93bd492 /src/mainboard | |
| parent | 68033c2483e8c639641775acd486bc8fccc2a395 (diff) | |
mb/google/brya/var/volmar: Disable PCH USB2 phy power gating
The patch disables PCH USB2 Phy power gating to prevent possible display
flicker issue for kano board. Please refer Intel doc#723158 for
more information.
BUG=None
TEST=Verify the build for volmar board
Signed-off-by: Ren Kuo <ren.kuo@quanta.corp-partner.google.com>
Change-Id: I4d12f7214a306ded54b4536a27fe0fb7f3c33b8b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65307
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/volmar/overridetree.cb | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/volmar/overridetree.cb b/src/mainboard/google/brya/variants/volmar/overridetree.cb index 8ebb94cfd8..aca32f83b4 100644 --- a/src/mainboard/google/brya/variants/volmar/overridetree.cb +++ b/src/mainboard/google/brya/variants/volmar/overridetree.cb @@ -23,6 +23,10 @@ end chip soc/intel/alderlake register "sagv" = "SaGv_Enabled" + # As per Intel Advisory doc#723158, the change is required to prevent possible + # display flickering issue. + register "usb2_phy_sus_pg_disable" = "1" + register "tcss_aux_ori" = "1" register "typec_aux_bias_pads[0]" = "{.pad_auxp_dc = GPP_E22, .pad_auxn_dc = GPP_E23}" |