From b3a1a44ee294f9db2725f5647efd96c1260cc93c Mon Sep 17 00:00:00 2001 From: Wisley Chen Date: Wed, 16 Jan 2019 16:05:51 +0800 Subject: [PATCH] mb/google/octopus/variants/meep: Disable xHCI compliance mode Some usb devices exhibit signal loss which causes xHCI entering compliance mode. The resolution is to disable xHCI compliance mode. BUG=b:122671995 TEST=check "Disable Link Compliance Mode" bit of "SuperSpeed Port Link control" register and usb operation successfully. Change-Id: Ia2ae7e52391fadc8ed23b8b76c45d410757d22ec Signed-off-by: Wisley Chen Reviewed-on: https://review.coreboot.org/c/30948 Reviewed-by: Karthik Ramasubramanian Tested-by: build bot (Jenkins) --- src/mainboard/google/octopus/variants/meep/overridetree.cb | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/mainboard/google/octopus/variants/meep/overridetree.cb b/src/mainboard/google/octopus/variants/meep/overridetree.cb index f531d1343b..f7aeac1085 100644 --- a/src/mainboard/google/octopus/variants/meep/overridetree.cb +++ b/src/mainboard/google/octopus/variants/meep/overridetree.cb @@ -112,4 +112,7 @@ chip soc/intel/apollolake end end # - I2C 7 end + + # Disable compliance mode + register "DisableComplianceMode" = "1" end