diff options
| author | Bernardo Perez Priego <bernardo.perez.priego@intel.com> | 2021-06-09 09:40:31 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-07-02 07:47:50 +0000 |
| commit | 421ce56f833edcfe34788ff07ebf5e09d582ff9f (patch) | |
| tree | ae19123e015c16ba27955289b0b22c7330079ee5 /src/soc | |
| parent | 2033afa68263834906e3eed8b3215dbd8b9bdb97 (diff) | |
soc/intel/alderlake: Add USB TCSS enablement
In order to detect USB Type C device port as Super Speed, we need to set
corresponding bit in UPD UsbTcPortEn. This patch will use device path
to determine which port should be enabled.
BUG=b:184324979
Test=Boot board, USB Type C must be functional and operate at Super Speed.
Signed-off-by: Bernardo Perez Priego <bernardo.perez.priego@intel.com>
Change-Id: I7da63f21d51889a888699540f780cb26b480c26d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55361
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/alderlake/fsp_params.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c index 783d2a96d2..e29133e188 100644 --- a/src/soc/intel/alderlake/fsp_params.c +++ b/src/soc/intel/alderlake/fsp_params.c @@ -304,6 +304,20 @@ static void fill_fsps_tcss_params(FSP_S_CONFIG *s_cfg, /* D3Hot and D3Cold for TCSS */ s_cfg->D3HotEnable = !config->TcssD3HotDisable; s_cfg->D3ColdEnable = !config->TcssD3ColdDisable; + + s_cfg->UsbTcPortEn = 0; + for (int i = 0; i < MAX_TYPE_C_PORTS; i++) { + /* TCSS xHCI --> Root Hub --> Type-C Port */ + const struct device_path port_path[] = { + {.type = DEVICE_PATH_PCI, .pci.devfn = SA_DEVFN_TCSS_XHCI}, + {.type = DEVICE_PATH_USB, .usb.port_type = 0, .usb.port_id = 0}, + {.type = DEVICE_PATH_USB, .usb.port_type = 3, .usb.port_id = i} }; + const struct device *port = find_dev_nested_path(pci_root_bus(), port_path, + ARRAY_SIZE(port_path)); + + if (is_dev_enabled(port)) + s_cfg->UsbTcPortEn |= BIT(i); + } } static void fill_fsps_chipset_lockdown_params(FSP_S_CONFIG *s_cfg, |