diff options
| author | John Zhao <john.zhao@intel.com> | 2021-01-01 14:19:36 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-01-08 08:22:47 +0000 |
| commit | 4ead6b33671bba5f67f1cb0d6df5979b47e4ccc0 (patch) | |
| tree | 3f9f760468fcc7d2af07f592b97b1139176e56c3 /src/soc/intel | |
| parent | 81a4c344e7015666b047a05fc0ecb90ad9013d64 (diff) | |
soc/intel/tigerlake: Enable USB2 port reset message on Type-C ports
USB3 is in CPU and USB2 in PCH on Tigerlake. Cross die messaging is
implemented between CPU and PCH through the IOSF SB bridge. a PCH xHCI
USB2 port reset event issued by the xHCI driver shall trigger a message
upstream to CPU to wake it from the low power state which allows a USB3
device that downgraded to USB2 to upgrade back to USB3.
BUG=b:176575892
TEST=Built and booted to kernel on Voxel board.
Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: I672f30a117980bc10bd71e9b77c5fa76286b9f5f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49052
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/tigerlake/fsp_params.c | 3 | ||||
| -rw-r--r-- | src/soc/intel/tigerlake/include/soc/usb.h | 2 |
2 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/fsp_params.c b/src/soc/intel/tigerlake/fsp_params.c index ed34897274..295f7896f2 100644 --- a/src/soc/intel/tigerlake/fsp_params.c +++ b/src/soc/intel/tigerlake/fsp_params.c @@ -159,6 +159,9 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd) params->Usb2OverCurrentPin[i] = config->usb2_ports[i].ocpin; else params->Usb2OverCurrentPin[i] = 0xff; + + if (config->usb2_ports[i].type_c) + params->PortResetMessageEnable[i] = 1; } for (i = 0; i < ARRAY_SIZE(config->usb3_ports); i++) { diff --git a/src/soc/intel/tigerlake/include/soc/usb.h b/src/soc/intel/tigerlake/include/soc/usb.h index 69b5ca89a7..5dea4bf52e 100644 --- a/src/soc/intel/tigerlake/include/soc/usb.h +++ b/src/soc/intel/tigerlake/include/soc/usb.h @@ -31,6 +31,7 @@ struct usb2_port_config { uint8_t tx_emp_enable; uint8_t pre_emp_bias; uint8_t pre_emp_bit; + uint8_t type_c; }; /* USB Overcurrent pins definition */ @@ -112,6 +113,7 @@ enum { .tx_emp_enable = USB2_PRE_EMP_ON, \ .pre_emp_bias = USB2_BIAS_56P3MV, \ .pre_emp_bit = USB2_HALF_BIT_PRE_EMP, \ + .type_c = 1, \ } struct usb3_port_config { |