Hello! I recently bought Thinkpad T14 Gen 4 AMD laptop, and I
installed Gentoo on it, with kernel 6.6.4.
Even though type-c ports seems to be working (I checked usb3 flash
stick, lenovo charger, Jabra headset, Yubikey), I cannot see any
devices in /sys/class/(typec,typec_mux,usb_power_delivery).
There are no messages in dmesg at all, mentioning typec. I can see
that modules typec_ucsi, ucsi_acpi, thunderbolt are loaded. I can see
that device TYPEC000 is present on acpi bus, there are files in
/sys/bus/acpi/devices/USBC000:00, but, there is no driver linked in
it.
I tried to recompile module ucsi_acpi, with adding { "USBC000", 0 }
to ucsi_acpi_match, but it did not change anything (except that in
modinfo of this module, USBC000 is now seen.
I tried to decompile SSDT1 table, which has definition of USBC, but
there is nothing in it, which is supicious.
What else can I check, to understand, why can't I see anything in
typec/PD subsystems?
