Furquan Shaikh has submitted this change. ( https://review.coreboot.org/c/coreboot/+/48653 )
Change subject: mb/google/zork: update USB 2.0 controller Lane Parameter for morphius ......................................................................
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 kevin.chiu@quantatw.com Change-Id: Ia104454d95e5e8d6a212c97fb09d61125945eeea Reviewed-on: https://review.coreboot.org/c/coreboot/+/48653 Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Felix Held felix-coreboot@felixheld.de --- M src/mainboard/google/zork/variants/morphius/overridetree.cb 1 file changed, 1 insertion(+), 1 deletion(-)
Approvals: build bot (Jenkins): Verified Felix Held: Looks good to me, approved
diff --git a/src/mainboard/google/zork/variants/morphius/overridetree.cb b/src/mainboard/google/zork/variants/morphius/overridetree.cb index dbdf2e9..bee59e6 100644 --- a/src/mainboard/google/zork/variants/morphius/overridetree.cb +++ b/src/mainboard/google/zork/variants/morphius/overridetree.cb @@ -43,7 +43,7 @@ .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, }"