Bug#1135682: linux: Enable CONFIG_USB_USBIO=m (+ GPIO_USBIO, I2C_USBIO) for Lunar Lake MIPI camera?

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From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1135682: linux: Enable CONFIG_USB_USBIO=m (+ GPIO_USBIO, I2C_USBIO) for Lunar Lake MIPI camera?
Date	Tue, 05 May 2026 10:50:02 +0200
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Cross-posted to 2 groups.

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Control: reassign -1 src:linux 
Control: forcemerge 1130114 1135682

Hi,

On Mon, May 04, 2026 at 04:21:15PM +0200, Glenn Heylen wrote:
> 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.

This was already requested in #1130114, merging both bugs.

Regards,
Salvatore

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Bug#1135682: linux: Enable CONFIG_USB_USBIO=m (+ GPIO_USBIO, I2C_USBIO) for Lunar Lake MIPI camera? Salvatore Bonaccorso <carnil@debian.org> - 2026-05-05 10:50 +0200

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