From 6ce42616bb8524ff6033f6d6439426ca07bfd45a Mon Sep 17 00:00:00 2001 From: Tim Chen Date: Fri, 17 Jan 2020 15:00:00 +0800 Subject: [PATCH] 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/38458 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan --- src/mainboard/google/hatch/variants/puff/overridetree.cb | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/mainboard/google/hatch/variants/puff/overridetree.cb b/src/mainboard/google/hatch/variants/puff/overridetree.cb index 402b98bc9a..2e40ba9fc1 100644 --- a/src/mainboard/google/hatch/variants/puff/overridetree.cb +++ b/src/mainboard/google/hatch/variants/puff/overridetree.cb @@ -171,6 +171,11 @@ chip soc/intel/cannonlake # GPIO for SD card detect 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 pci 14.0 on chip drivers/usb/acpi