Attention is currently required from: Martin Roth, Furquan Shaikh, Chiranjeevi Rapolu, Tim Wawrzynczak, John Zhao, Duncan Laurie, Patrick Rudolph.

Brandon Breitenstein uploaded patch set #4 to this change.

View Change

soc/intel/tigerlake: Enable TCSS Muxes to disconnect mode during boot

TCSS muxes being left uninitialized during boot is causing some USB3 devices
to downgrade to USB2 speed. To properly configure the Type C ports the muxes
should be set to disconnected state during boot so that the port mapping of
USB2/3 devices is properly setup prior to Kernel initializing devices.

BUG=b:180426950
BRANCH=firmware-volteer-13672.B
TEST= Connected USB3 storage device and rebooted the system multiple times
to verify that the devices were no longer downgrading to USB2 speed.

Change-Id: I4352072a4a7d6ccb1364b38377831f3c22ae8fb4
Signed-off-by: Brandon Breitenstein <brandon.breitenstein@intel.com>
---
M src/soc/intel/tigerlake/Kconfig
M src/soc/intel/tigerlake/Makefile.inc
M src/soc/intel/tigerlake/early_tcss.c
M src/soc/intel/tigerlake/fsp_params.c
M src/soc/intel/tigerlake/include/soc/early_tcss.h
5 files changed, 79 insertions(+), 16 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/94/51194/4

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