On Fri, 2020-07-10 at 12:56 -0300, Fabio Estevam wrote: > Hi Philippe, > > On Fri, Jul 10, 2020 at 12:51 PM Philippe Schenker > <philippe.schenker@xxxxxxxxxxx> wrote: > > Chipidea depends on some hardware signals to be there in order > > I think this description is too vague. > > Could you please provide more details so that a user can know if their > hardware falls into this category? > > It is not clear from seeing this series what is the hardware details > that would require this property to be used. Hi Fabio, Peter, I tried to keep the description for this patch somewhat general. But as Peter suggested I will add Toradex's use-case for this. The problem with Colibri iMX6ULL is that we are stuck with a legacy module standard that does only include one USB host/device switching signal. Plus on that specific module we have no 5V available hence left the connection of VBUS signal away. This works normally pretty well but for our "dual-role OTG" port I could not make it work with runtime-pm running and proper extcon configuration. The problem was, when plugging in something in device or host mode gets not enumerated and detected. That are the reasons why I believe the PHY or something else in Chipidea needs a signal that it does not have on that module that would wake the whole thing from runtime-suspend. I will think about a better description and send a v2 Thanks Philippe
