[PATCH v5 0/5] i3c: add i3cdev module to expose i3c dev in /dev

Wolfram Sang wsa+renesas at sang-engineering.com
Fri Sep 25 03:57:42 PDT 2026


Hi Andy,

> And you need to gather the opinion of Wolfram as well.

Dunno if I can help here. When it comes to driver development, a dev
interface is surely useful but can stay in some debug corner. However,
cover letter says:

>> Userspace access to I3C targets is needed for devices that do not have a
>> kernel driver bound to them, such as targets in ROM/bootloader recovery
>> mode (e.g., OCP Secure Firmware Recovery v1.1 and Caliptra Silicon Root of
>> Trust recovery flows), as well as hardware bring-up and diagnostics.

I don't know anything about these recovery mechanisms and their needs. I
might have time to look into I3C things after all the conferences in
Prague, but no promises...

Happy hacking,

   Wolfram




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