Re: [PATCH v3 0/1] hwmon: Add Minisforum UM780 XTX EC monitoring and fan control

[Guenter Roeck <linux@roeck-us.net>]

On 8/25/26 11:41, Sebastián Peyrott wrote:
> Add a DMI-gated hwmon driver for both fans on the Minisforum UM780 XTX. The
> EC is an ITE IT5571E, but its register layout and OEM commands are defined
> by machine-specific firmware, so the driver only binds to the exact board
> revision and BIOS version on which it was tested.
> 
> The driver exposes both fan-control temperatures and tachometers, two OEM
> automatic CPU fan profiles, and two writable system-fan transition
> temperatures. It preserves settings selected through its interface across
> s2idle.
> 
> Tested on the target system with concurrent RPM reads, OEM profile changes,
> system-fan threshold changes, unload/reload stress, and s2idle resume. The
> settings were correct from the first userspace sample after resume and
> remained stable for 15 seconds.
> 
> OpenAI Codex assisted with reverse-engineering review, code editing, test
> orchestration, and patch and email preparation across a long interactive
> session. I reviewed every change, ran the live tests on the target
> hardware, and take responsibility for the submission.
> 
> Link: https://lore.kernel.org/r/20260818181345.203295-1-speyrott@gmail.com
> 
> Sebastián Peyrott (1):
>    hwmon: Add Minisforum UM780 XTX EC monitoring and fan control
> 

Note: For a single patch, an introduction patch is unnecessary and just adds
work for the maintainer.

Guenter

> ---
> Changes in v3:
> - return -EIO after bounded RPM coherence retries and -ENODATA for an
>    unknown CPU profile;
> - seed saved settings at probe, update them only after successful hwmon
>    writes, and restore them at resume without reading the EC at suspend;
> - clarify saved-state naming, live threshold validation, and resume
>    documentation.
> 
>   Documentation/hwmon/index.rst               |   1 +
>   Documentation/hwmon/minisforum-um780xtx.rst |  68 +++
>   MAINTAINERS                                 |   7 +
>   drivers/hwmon/Kconfig                       |  16 +
>   drivers/hwmon/Makefile                      |   1 +
>   drivers/hwmon/minisforum-um780xtx.c         | 501 ++++++++++++++++++++
>   6 files changed, 594 insertions(+)
>   create mode 100644 Documentation/hwmon/minisforum-um780xtx.rst
>   create mode 100644 drivers/hwmon/minisforum-um780xtx.c
> 
> 
> base-commit: 75f2c0b3690702c90863c2e138cb5520670845ea