Re: [PATCH v5 2/2] gpio: gpio-cascade: add generic GPIO cascade
From: Enrico Weigelt, metux IT consult
Date: Mon Jun 21 2021 - 14:32:03 EST
On 21.06.21 19:43, Andy Shevchenko wrote:
> Since in parallel there is a discussion about the virtio-gpio
> interface, how will this work with it?
Haven't really understood what this is actually doing. A multiplexer
where only external line is connected to some actual gpio at a time ?
Or does it merge multiple inputs into one (eg. logical OR) ?
Is that about real hardware mux chips or just a software only ?
What is the actual use case ?
For now, I don't see any relation to virtio-gpio. Correct me if I'm
wrong.
--mtx
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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
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