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mainboard/google/puff: update SATA strength 

Base on SATA SI report to fine tune the strength for port 1.

BRANCH=none
BUG=b:147351936
TEST=build and test SATA port works fine.

Change-Id: Ib82b7e5df32b4ce794682781f33c44dfeb6e68bf
Signed-off-by: Tim Chen <tim-chen@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38458
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
This commit is contained in:
Tim Chen 2020-01-17 15:00:00 +08:00 committed by Patrick Georgi
parent c004857da0
commit 6ce42616bb
1 changed files with 5 additions and 0 deletions
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5
src/mainboard/google/hatch/variants/puff/overridetree.cb
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@ -171,6 +171,11 @@ chip soc/intel/cannonlake
# GPIO for SD card detect # GPIO for SD card detect
register "sdcard_cd_gpio" = "vSD3_CD_B" register "sdcard_cd_gpio" = "vSD3_CD_B"
# SATA port 1 Gen3 Strength
# Port1 Tx De-Emphasis = 20*log(0x20/64) = -6dB
register "sata_port[1].TxGen3DeEmphEnable" = "1"
register "sata_port[1].TxGen3DeEmph" = "0x20"
device domain 0 on device domain 0 on
device pci 14.0 on device pci 14.0 on
chip drivers/usb/acpi chip drivers/usb/acpi