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mb/google/volteer/variants/delbin: Disable PmcUsb2PhySusPgEnable 

eDP panel flicker during system idle state is observed.
Disabling USB2 SUS well power gating can remove flicker symptom.
Please refer to doc#634894 for more details.

BUG=b:182323059
BRANCH=None
TEST=Boot and confirm no display flicker.

Signed-off-by: Ravi Sarawadi <ravishankar.sarawadi@intel.com>
Change-Id: Icadf9c494fab82b219317c3ca3b04f633b543083
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51613
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Ravi Sarawadi 2021-03-17 16:07:28 -07:00 committed by Furquan Shaikh
parent 7ef6aeec14
commit c6bc3a56d6
1 changed files with 2 additions and 0 deletions
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src/mainboard/google/volteer/variants/delbin/overridetree.cb
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@ -2,6 +2,8 @@ chip soc/intel/tigerlake
register "DdiPort1Hpd" = "0"
register "DdiPort2Hpd" = "0"
register "usb2_phy_sus_pg_disable" = "1"
#+-------------------+---------------------------+
#| Field | Value |
#+-------------------+---------------------------+