Re: Linux 6.18-rc6

[Heikki Krogerus <heikki.krogerus@linux.intel.com>]

Hi,

Wed, Nov 26, 2025 at 11:01:24AM -0500, Stephanie Gawroriski kirjoitti:
> Hi!
> 
> On Monday, 24 November 2025 04:50:03 EST Heikki Krogerus wrote:
> > I'm still trying to figure this out, but let's rule out one of my
> > concerns..
> > 
> > Can you check are the symlinks pointing to the correct USB devices
> > under /sys/class/typec ?
> > 
> > It's probable easiest with just one USB device connected to the
> > system. With one USB device connected to the system there should be
> > only one partner under /sys/class/typec (for example port0-partner),
> > so it should be easy to check if the symlink under that partner
> > device is pointing to the correct USB device.
> > 
> >         % ls -la /sys/class/typec/port<x>-partner/
> > 
> > You should see a symlink to an USB device under it. Can you check if
> > it's the correct USB device?
> > 
> > If it's not the correct USB device, then the ACPI table may have wrong
> > _PLD (Physical Location of Device) objects for these USB port or USB
> > Type-C connector device nodes. The code uses the _PLD to link the
> > correct USB port to the USB Type-C connector.
> > 
> > thanks,
> 
> The USB-C cable is plugged into the connector that is furthest to the back of 
> the device. Bus 2 and Bus 3 are connected to the same port, the ethernet 
> controller is connected to the dock, so I am guessing that it is using the 
> USB-only interface of the USB-C port, not sure why it would be not under Bus 
> 3?
> 
> These are the outputs along with the USB and PCI tree:
> 
> stephanie@arborvitaetree:~$ ls -la /sys/class/typec/port1-partner/
> total 0
> drwxr-xr-x 4 root root    0 Nov 26 10:30 .
> drwxr-xr-x 8 root root    0 Nov 24 15:14 ..
> lrwxrwxrwx 1 root root    0 Nov 26 10:30 2-3 -> ../../../../../
> pci0000:00/0000:00:0d.0/usb2/2-3
> lrwxrwxrwx 1 root root    0 Nov 26 10:30 3-3 -> ../../../../../
> pci0000:00/0000:00:14.0/usb3/3-3

These look correct to me, which is a relief.

At this point can I ask you to report this in bugzilla.kernel.org?

thanks,

> -r--r--r-- 1 root root 4096 Nov 26 10:30 accessory_mode
> lrwxrwxrwx 1 root root    0 Nov 25 23:42 device -> ../../port1
> -r--r--r-- 1 root root 4096 Nov 26 10:30 number_of_alternate_modes
> drwxr-xr-x 5 root root    0 Nov 25 23:42 pd2
> drwxr-xr-x 2 root root    0 Nov 26 10:29 power
> lrwxrwxrwx 1 root root    0 Nov 25 23:42 subsystem -> ../../../../../../class/
> typec
> -r--r--r-- 1 root root 4096 Nov 26 10:30 supports_usb_power_delivery
> -rw-r--r-- 1 root root 4096 Nov 25 23:42 uevent
> -r--r--r-- 1 root root 4096 Nov 26 10:30 usb_mode
> lrwxrwxrwx 1 root root    0 Nov 26 10:30 usb_power_delivery -> pd2
> -r--r--r-- 1 root root 4096 Nov 26 10:30 usb_power_delivery_revision
> 
> stephanie@arborvitaetree:/sys/class/typec$ lsusb -tv
> /:  Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 480M
>     ID 1d6b:0002 Linux Foundation 2.0 root hub
> /:  Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/4p, 20000M/x2
>     ID 1d6b:0003 Linux Foundation 3.0 root hub
>     |__ Port 003: Dev 005, If 0, Class=Hub, Driver=hub/4p, 10000M
>         ID 8087:0b40 Intel Corp. 
>         |__ Port 004: Dev 006, If 0, Class=Hub, Driver=hub/4p, 10000M
>             ID 2109:0822 VIA Labs, Inc. 
>             |__ Port 002: Dev 007, If 0, Class=Communications, Driver=cdc_ncm, 
> 5000M
>                 ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet
>             |__ Port 002: Dev 007, If 1, Class=CDC Data, Driver=cdc_ncm, 5000M
>                 ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet
> /:  Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/12p, 480M
>     ID 1d6b:0002 Linux Foundation 2.0 root hub
>     |__ Port 003: Dev 023, If 0, Class=Hub, Driver=hub/6p, 480M
>         ID 1d5c:5801 Fresco Logic 
>         |__ Port 001: Dev 024, If 0, Class=Billboard, Driver=[none], 1.5M
>             ID 291a:87e0  
>         |__ Port 004: Dev 025, If 0, Class=Hub, Driver=hub/4p, 480M
>             ID 2109:2822 VIA Labs, Inc. 
>             |__ Port 001: Dev 027, If 0, Class=Hub, Driver=hub/4p, 480M
>                 ID 1a40:0101 Terminus Technology Inc. Hub
>                 |__ Port 001: Dev 028, If 0, Class=Human Interface Device, 
> Driver=usbhid, 1.5M
>                     ID 17ef:608d Lenovo Optical Mouse
>                 |__ Port 002: Dev 029, If 0, Class=Human Interface Device, 
> Driver=usbhid, 12M
>                     ID 0c45:7692 Microdia 
>                 |__ Port 002: Dev 029, If 1, Class=Human Interface Device, 
> Driver=usbhid, 12M
>                     ID 0c45:7692 Microdia 
>                 |__ Port 004: Dev 030, If 0, Class=Video, Driver=uvcvideo, 
> 480M
>                     ID 17ef:4836 Lenovo 
>                 |__ Port 004: Dev 030, If 1, Class=Video, Driver=uvcvideo, 
> 480M
>                     ID 17ef:4836 Lenovo 
>                 |__ Port 004: Dev 030, If 2, Class=Audio, Driver=snd-usb-
> audio, 480M
>                     ID 17ef:4836 Lenovo 
>                 |__ Port 004: Dev 030, If 3, Class=Audio, Driver=snd-usb-
> audio, 480M
>                     ID 17ef:4836 Lenovo 
>         |__ Port 005: Dev 026, If 0, Class=Billboard, Driver=[none], 12M
>             ID 2eb9:0123  
>         |__ Port 005: Dev 026, If 1, Class=Vendor Specific Class, 
> Driver=[none], 12M
>             ID 2eb9:0123  
>     |__ Port 006: Dev 022, If 0, Class=Vendor Specific Class, Driver=[none], 
> 12M
>         ID 06cb:00fc Synaptics, Inc. Prometheus Fingerprint Reader
>     |__ Port 008: Dev 003, If 0, Class=Video, Driver=uvcvideo, 480M
>         ID 30c9:0051 Luxvisions Innotech Limited 
>     |__ Port 008: Dev 003, If 1, Class=Video, Driver=uvcvideo, 480M
>         ID 30c9:0051 Luxvisions Innotech Limited 
>     |__ Port 008: Dev 003, If 2, Class=Application Specific Interface, 
> Driver=[none], 480M
>         ID 30c9:0051 Luxvisions Innotech Limited 
>     |__ Port 010: Dev 004, If 0, Class=Wireless, Driver=btusb, 12M
>         ID 8087:0033 Intel Corp. AX211 Bluetooth
>     |__ Port 010: Dev 004, If 1, Class=Wireless, Driver=btusb, 12M
>         ID 8087:0033 Intel Corp. AX211 Bluetooth
> /:  Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/4p, 10000M
>     ID 1d6b:0003 Linux Foundation 3.0 root hub
> 
> stephanie@arborvitaetree:/sys/class/typec$ lspci -tv -nn
> -[0000:00]-+-00.0  Intel Corporation Raptor Lake-P 6p+8e cores Host Bridge/
> DRAM Controller [8086:a706]
>            +-02.0  Intel Corporation Raptor Lake-P [Iris Xe Graphics] 
> [8086:a7a0]
>            +-04.0  Intel Corporation Raptor Lake Dynamic Platform and Thermal 
> Framework Processor Participant [8086:a71d]
>            +-06.0-[04]----00.0  Sandisk Corp WD Blue SN5000 NVMe SSD (DRAM-
> less) [15b7:504a]
>            +-07.0-[20-49]--
>            +-07.2-[50-79]----00.0-[51-79]--+-00.0-[52]--
>            |                               +-01.0-[53-5f]--
>            |                               +-02.0-[60-6c]--
>            |                               +-03.0-[6d-78]--
>            |                               \-04.0-[79]--
>            +-08.0  Intel Corporation GNA Scoring Accelerator module 
> [8086:a74f]
>            +-0a.0  Intel Corporation Raptor Lake Crashlog and Telemetry 
> [8086:a77d]
>            +-0d.0  Intel Corporation Raptor Lake-P Thunderbolt 4 USB 
> Controller [8086:a71e]
>            +-0d.2  Intel Corporation Raptor Lake-P Thunderbolt 4 NHI #0 
> [8086:a73e]
>            +-0d.3  Intel Corporation Raptor Lake-P Thunderbolt 4 NHI #1 
> [8086:a76d]
>            +-12.0  Intel Corporation Alder Lake-P Integrated Sensor Hub 
> [8086:51fc]
>            +-14.0  Intel Corporation Alder Lake PCH USB 3.2 xHCI Host 
> Controller [8086:51ed]
>            +-14.2  Intel Corporation Alder Lake PCH Shared SRAM [8086:51ef]
>            +-14.3  Intel Corporation Raptor Lake PCH CNVi WiFi [8086:51f1]
>            +-15.0  Intel Corporation Alder Lake PCH Serial IO I2C Controller 
> #0 [8086:51e8]
>            +-15.1  Intel Corporation Alder Lake PCH Serial IO I2C Controller 
> #1 [8086:51e9]
>            +-16.0  Intel Corporation Alder Lake PCH HECI Controller 
> [8086:51e0]
>            +-1c.0-[08]----00.0  Intel Corporation XMM7560 LTE Advanced Pro 
> Modem [8086:7560]
>            +-1f.0  Intel Corporation Raptor Lake LPC/eSPI Controller 
> [8086:519d]
>            +-1f.3  Intel Corporation Raptor Lake-P/U/H cAVS [8086:51ca]
>            +-1f.4  Intel Corporation Alder Lake PCH-P SMBus Host Controller 
> [8086:51a3]
>            \-1f.5  Intel Corporation Alder Lake-P PCH SPI Controller 
> [8086:51a4]
> 
> stephanie@arborvitaetree:/sys/class/typec$ ls -w 1 port0/
> data_role
> device
> firmware_node
> physical_location
> port0.0
> port0.1
> port0.2
> power
> power_operation_mode
> power_role
> preferred_role
> subsystem
> supported_accessory_modes
> uevent
> usb2-port1
> usb3-port1
> usb4_port1
> usb_capability
> usb_power_delivery
> usb_power_delivery_revision
> usb_typec_revision
> vconn_source
> waiting_for_supplier
> 
> stephanie@arborvitaetree:/sys/class/typec$ ls -w 1 port1/
> data_role
> device
> firmware_node
> physical_location
> port1.0
> port1.1
> port1.2
> port1-partner
> power
> power_operation_mode
> power_role
> preferred_role
> subsystem
> supported_accessory_modes
> uevent
> usb2-port3
> usb3-port3
> usb4_port7
> usb_capability
> usb_power_delivery
> usb_power_delivery_revision
> usb_typec_revision
> vconn_source
> waiting_for_supplier
> 
> 
> 
> 
> 

-- 
heikki