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mb/google/brya/var/kano: 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 kano board

Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Change-Id: I19430a68e1e847e71382781563200a4c88f37a59
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65107
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ren Kuo <ren.kuo@quanta.corp-partner.google.com>
This commit is contained in:
David Wu 2022-06-13 17:34:33 +08:00 committed by Felix Held
parent d69158d17a
commit c6d0a4c1a8
1 changed files with 4 additions and 0 deletions
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4
src/mainboard/google/brya/variants/kano/overridetree.cb
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@ -19,6 +19,10 @@ end
chip soc/intel/alderlake chip soc/intel/alderlake
register "sagv" = "SaGv_Enabled" 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"
# GPE configuration # GPE configuration
register "pmc_gpe0_dw1" = "GPP_D" register "pmc_gpe0_dw1" = "GPP_D"