On 2018-07-20 12:05, Boris Brezillon wrote: > 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. Why can't a bit-banger switch from open-drain to push-pull? That's just a matter of disconnecting some pull-ups, no? And maybe you know that no device on your bus uses IBIs? Maybe none of reasons for why bit-banging isn't feasible are applicable? I.e. maybe there can be a I3C bit-banger that perhaps isn't generic and isn't full-featured, but does work just fine in some specific setup? Cheers, Peter
