The PCI-SIG engineering change requirement provides the ACPI additions
for firmware latency optimization. This change adds additional ACPI DSM
function with both of FW_RESET_TIME and FW_D3HOT_TO_D0_TIME to the
USB4/TBT topology. The OS is informed to reduce latency for upstream
ports while connecting USB4/TBT devices.
BUG=b:199757442
TEST=It was validated that the first connected device waits only 50ms
instead of 100ms and all functions work on Voxel board.
Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: I5a19118b75ed0a78b7436f2f90295c03928300d7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57625
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
7227cef0d7