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| author | John Zhao <john.zhao@intel.com> | 2021-01-01 14:51:04 -0800 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-01-12 18:14:35 +0000 |
| commit | 18a730d588ec272aa0c8a6a78db4e306c1731310 (patch) | |
| tree | 2a8452570f56846b67d60a4d9c24506ff5abd392 /src/arch/x86/ioapic.c | |
| parent | 227055bdeb84072bf094ccb9fc330a1aefcfc2c9 (diff) | |
mb/google/volteer: Configure Voxel USB2 ports for Type C
Two USB2 ports 4 and 9 are assigned to type C connectors on Voxel board.
This update configures these USB2 ports for Type C which will allow USB2
port reset message upstream from PCH to CPU to recover a USB3 device
that downgraded to USB2 to upgrade back to USB3.
BUG=b:176575892
TEST=Booted to kernel on Voxel board and verified usb2 port reset
message enable bits through pch xhci_mmio_base + R_XHCI_MEM_U2PRM_U2PRDE
where the offset register R_XHCI_MEM_U2PRM_U2PRDE has value 0x92f4.
Validated various USB3 devices enumeration.
Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: Ia370a449a41701e690c1c507d70bedfce2076a65
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49053
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.corp-partner.google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Diffstat (limited to 'src/arch/x86/ioapic.c')
0 files changed, 0 insertions, 0 deletions