Package: linux
Version: 7.0.3-1
Severity: wishlist
Tags: upstream
The internal MIPI camera on Lunar Lake laptops doesn't work on Debian
sid because the Lattice NX33 USB bridge (USB ID 2AC1:20C9 / ACPI HID
INTC10B6) has no driver - CONFIG_USB_USBIO is disabled in the kernel
config.
Hardware: Dell XPS 13 9350, Core Ultra 200V (Lunar Lake), kernel
7.0.3+deb14-amd64
Evidence:
$ lsusb -d 2ac1:20c9
Bus 003 Device 003: ID 2ac1:20c9 SLS Lattice AI USB 2.0
$ grep USB_USBIO /boot/config-7.0.3+deb14-amd64
# CONFIG_USB_USBIO is not set
$ lsmod | grep -E "usbio|ljca"
(no output)
The driver was merged upstream in commit 121a0f839dbb ("usb: misc: Add
Intel USBIO bridge driver", Sep 2025, Linux 6.18). The file
drivers/usb/misc/usbio.c is present in the 7.0.3 tree and includes
USB_DEVICE(0x2ac1, 0x20c9) in its ID table - so this is purely a
config ask, no code changes needed.
Three options need enabling:
CONFIG_USB_USBIO=m
CONFIG_GPIO_USBIO=m
CONFIG_I2C_USBIO=m
This is the Lunar Lake equivalent of what was done for IPU6 in
Bug#1074441 (fixed in 6.11~rc4-1~exp1).
There's a second piece needed for full camera function - the intel_cvs
driver (ACPI HID INTC10DE, currently out-of-tree in
intel/vision-drivers) - but usbio is the prerequisite. Happy to test
any kernel build with these enabled.
