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asus/p2b-ls: Replicate OEM GPO configuration 

Replicate the GPO configurations from OEM BIOS, obtained via inteltool.
Among the GPOs are termination controls for the onboard SCSI buses.

TEST=read/write Maxtor Atlas 10k3 18GB HDD connected to Ultra2 LVD port

Change-Id: I86183acd8e1a830d7639c21ec179fbdbe937f8ee
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38354
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Keith Hui 2020-01-11 03:54:59 -05:00 committed by Angel Pons
parent 9a521d7125
commit bd2dc2b764
1 changed files with 4 additions and 0 deletions
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4
src/mainboard/asus/p2b/variants/p2b-ls/overridetree.cb
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@ -1,6 +1,10 @@
chip northbridge/intel/i440bx # Northbridge
device domain 0 on # PCI domain
chip southbridge/intel/i82371eb # Southbridge
register "gpo" = "0x7fbfb9ff"
register "gpo22_enable" = "1" # GPO22 controls LVD port termination (0=enabled)
# GPO23 controls SCSI-50 port termination (1=enabled)
# SCSI-68 port is always terminated
device pci 4.0 on # ISA bridge
chip superio/winbond/w83977tf # Super I/O
device pnp 3f0.a off # ACPI