[Feature Request] Support for STM32U5 microcontrollers

[Wolffyx]

Feature Request Type

• Core functionality
• Add-on hardware support (eg. audio, RGB, OLED screen, etc.)
• Alteration (enhancement/optimization) of existing feature(s)
• New behavior

Description

Hello,
I want to use the STM32U5 microcontroller for a custom keyboard that I want to build but I saw that there is no support yet for this microcontroller. In the ChibiOS repo I saw that there is a something regarding the this type of microcontroller. I don't know if all the data is in there but it will be nice to have support to this too. Or at least provide a documentation how to add a support for a specific microcontroller
Thanks!

[drashna]

The chibiOS repo has no USB/OTG support for the U5. Without that, QMK support won't happen. It's also missing a number of other peripherals, too.