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soc/intel/common/tcss: Configure USB-C ports with attached devices 

Inspect all type-C USB ports, check if there is a USB device attached,
and if so, send the connection request to the PMC. This allows for any
attached USB2/USB3 devices to be used for booting by the payload.

Since this functionality is only needed by ChromeOS devices with TCSS
running upstream coreboot, introduce a new Kconfig to guard its use.
Boards needing it will select it in subsequent commits.

TEST=tested with rest of patch train

Change-Id: I69522dbcc8cae6bbf41659ae653107d0e031c812
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72909
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
CoolStar 2023-02-07 14:44:54 -08:00 committed by Martin L Roth
parent b33778e71f
commit 9c7433ec55
2 changed files with 37 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/soc/intel/common/block/tcss/Kconfig
View File

@ -9,3 +9,11 @@ config ENABLE_TCSS_DISPLAY_DETECTION
depends on SOC_INTEL_COMMON_BLOCK_TCSS && RUN_FSP_GOP
help
Enable displays to be detected over Type-C ports during boot.
config ENABLE_TCSS_USB_DETECTION
bool "Enable detection of USB boot devices attached to USB Type-C ports with TCSS"
depends on SOC_INTEL_COMMON_BLOCK_TCSS
help
Enable USB-C attached storage devices to be detected at boot.
This option is required for some payloads (eg, edk2), without which devices attached
to USB-C ports will not be detected and available to boot from.

29
src/soc/intel/common/block/tcss/tcss.c
View File

@ -340,6 +340,32 @@ static void tcss_configure_dp_mode(const struct tcss_port_map *port_map, size_t
}
}
static void tcss_configure_usb_mode(const struct tcss_port_map *port_map, size_t num_ports)
{
int ret;
size_t i;
const struct usbc_ops *ops;
struct usbc_mux_info mux_info;
const struct tcss_port_map *port_info;
ops = usbc_get_ops();
if (ops == NULL)
return;
for (i = 0; i < num_ports; i++) {
ret = ops->mux_ops.get_mux_info(i, &mux_info);
if ((ret < 0) || !mux_info.usb || (mux_info.dp && mux_info.hpd_lvl))
continue;
port_info = &port_map[i];
ret = send_pmc_connect_request(i, &mux_info, port_info);
if (ret) {
printk(BIOS_ERR, "Port %zu connect request failed\n", i);
continue;
}
}
}
static uint32_t calc_bias_ctrl_reg_value(gpio_t pad)
{
unsigned int vw_index, vw_bit;
@ -429,6 +455,9 @@ void tcss_configure(const struct typec_aux_bias_pads aux_bias_pads[MAX_TYPE_C_PO
if (CONFIG(ENABLE_TCSS_DISPLAY_DETECTION))
tcss_configure_dp_mode(port_map, num_ports);
if (CONFIG(ENABLE_TCSS_USB_DETECTION))
tcss_configure_usb_mode(port_map, num_ports);
}
}