From ad77576bcb05bb6f54c2b361635dc905040f74b4 Mon Sep 17 00:00:00 2001 From: Kevin Chiu Date: Wed, 16 Dec 2020 14:24:05 +0800 Subject: mb/google/zork: update USB 2.0 controller Lane Parameter for morphius from AMD USB phy specialist recommended that TXVREFTUNE0 shouldn't over 0xD (the maximum) in order to have enough room to accomdate a safe disconnect threshhold in COMPDISTUNE0. TXVREFTUNE0: 0xf -> 0xd BUG=b:172687208 BRANCH=zork TEST=emerge-zork coreboot Signed-off-by: Kevin Chiu Change-Id: Ia104454d95e5e8d6a212c97fb09d61125945eeea Reviewed-on: https://review.coreboot.org/c/coreboot/+/48653 Tested-by: build bot (Jenkins) Reviewed-by: Felix Held --- src/mainboard/google/zork/variants/morphius/overridetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/mainboard/google') diff --git a/src/mainboard/google/zork/variants/morphius/overridetree.cb b/src/mainboard/google/zork/variants/morphius/overridetree.cb index dbdf2e9a34..bee59e6a1f 100644 --- a/src/mainboard/google/zork/variants/morphius/overridetree.cb +++ b/src/mainboard/google/zork/variants/morphius/overridetree.cb @@ -43,7 +43,7 @@ chip soc/amd/picasso .tx_pre_emp_amp_tune = 0x03, .tx_pre_emp_pulse_tune = 0x0, .tx_rise_tune = 0x1, - .tx_vref_tune = 0xf, + .tx_vref_tune = 0xd, .tx_hsxv_tune = 0x3, .tx_res_tune = 0x01, }" -- cgit v1.2.3