On Wed, Feb 05, 2025 at 06:39:13PM +0100, Herve Codina wrote:
> The big picture behind this RFC series is to support a Linux device
> with a connector to physically add and remove an add-on to/from the
> main device to augment its features at runtime, adding devices on
> non-discoverable busses, using device tree overlays.

I didn't test the actual feature, but I did test this on my Renesas
Lager board (R-Car H2) including its use of the notorious
i2c-demux-pinctrl driver (Thanks for taking care of it!). No regressions
discovered, so for that part:

Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>