Re: [PATCH v8] i2c: virtio: add a virtio i2c frontend driver

On Thu, Mar 18, 2021 at 3:42 PM Enrico Weigelt, metux IT consult
[off-list ref] wrote:

On 16.03.21 08:44, Viresh Kumar wrote:

quoted

FWIW, this limits this driver to support a single device ever. We
can't bind multiple devices to this driver now. Yeah, perhaps we will
never be required to do so, but who knows.

Actually, I believe multiple devices really should be possible.

The major benefit of virtio-i2c is either bridging certan real bus'es
into a confined workload, or creating virtual hw testbeds w/o having to
write a complete emulation (in this case, for dozens of different i2c
controllers) - and having multiple i2c interfaces in one machine isn't
exactly rare.

Allowing multiple virtio-i2c controllers in one system, and multiple i2c
devices attached to each controller is clearly something that has to work.

I don't actually see a limitation though. Viresh, what is the problem
you see for having multiple controllers?

         Arnd
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