[coreboot-gerrit] Change in coreboot[master]: mainboard/google/puff: update SATA strength

[Tim Chen (Code Review)]

Hello Tim Chen,

I'd like you to do a code review. Please visit

https://review.coreboot.org/c/coreboot/+/38458

to review the following change.

Change subject: mainboard/google/puff: update SATA strength
......................................................................

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 
---
M src/mainboard/google/hatch/variants/puff/overridetree.cb
1 file changed, 4 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/58/38458/1

diff --git a/src/mainboard/google/hatch/variants/puff/overridetree.cb b/src/mainboard/google/hatch/variants/puff/overridetree.cb
index e3ccc61..bddc39e 100644
--- a/src/mainboard/google/hatch/variants/puff/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/puff/overridetree.cb
@@ -122,6 +122,10 @@
    # GPIO for SD card detect
    register "sdcard_cd_gpio" = "vSD3_CD_B"

+	# SATA port 1 Gen3 Strength
+	register "PchSataHsioTxGen3DeEmphEnable[1]" = "1"
+	register "PchSataHsioTxGen3DeEmph[1]" = "0x20"
+
    device domain 0 on
    	device pci 14.0 on
    		chip drivers/usb/acpi