On Fri, 20 Jul 2018 11:57:56 +0200 Peter Rosin <peda@xxxxxxxxxx> wrote: > > Maybe a bit-bang I3C master isn't feasible for some fundamental > reason? No, it's clearly not. The way an I3C master is supposed to switch from open-drain to push-pull during a transaction or the concept of IBIs are the first things that come to mind, but I guess you have plenty of other reasons preventing you from implementing a i3c-bit-bang master.