diff options
| author | Anil Kumar <anil.kumar.k@intel.com> | 2022-02-01 12:59:03 -0800 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2022-02-04 16:52:28 +0000 |
| commit | c6b65c1a811e25dc909659ff4890eb76e16dba8a (patch) | |
| tree | d1ee55c15e476343083a6f62437569d185e108a2 | |
| parent | b6cf642732f59e732c21dffb98bdd91a33324022 (diff) | |
soc/intel/alderlake: Enable USB2 port reset message on Type-C ports
This change is added to address the issue of USB3 ports downgrading to
high speed during low power modes and not returning back to super speed.
The patch enables port reset event on USB2 ports. This event is
is passed to USB3 upstream ports to upgrade back to super speed (USB3)
after a downgrade during low power state
BUG=b:193287279
TEST=Built coreboot on Gimble and tested type A pen drive detects as
super speed device
Change-Id: Iabc6f308992bf3868da66f152c6d7b0164e64bea
Signed-off-by: Anil Kumar <anil.kumar.k@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61536
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
| -rw-r--r-- | src/soc/intel/alderlake/fsp_params.c | 3 | ||||
| -rw-r--r-- | src/soc/intel/alderlake/include/soc/usb.h | 2 |
2 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c index 8284980b2e..8aa20a8dc6 100644 --- a/src/soc/intel/alderlake/fsp_params.c +++ b/src/soc/intel/alderlake/fsp_params.c @@ -439,6 +439,9 @@ static void fill_fsps_xhci_params(FSP_S_CONFIG *s_cfg, s_cfg->Usb2OverCurrentPin[i] = config->usb2_ports[i].ocpin; else s_cfg->Usb2OverCurrentPin[i] = OC_SKIP; + + if (config->usb2_ports[i].type_c) + s_cfg->PortResetMessageEnable[i] = 1; } for (i = 0; i < ARRAY_SIZE(config->usb3_ports); i++) { diff --git a/src/soc/intel/alderlake/include/soc/usb.h b/src/soc/intel/alderlake/include/soc/usb.h index e339c7261e..70a367ec59 100644 --- a/src/soc/intel/alderlake/include/soc/usb.h +++ b/src/soc/intel/alderlake/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 { |