On Wed, 14 Aug 2013, Mark Brown wrote: > On Mon, Aug 12, 2013 at 09:04:00PM -0400, Alan Stern wrote: > > > The bus code would need hooks installed wherever the platform wants to > > do something extra. This could end up growing to a lot of hooks. How > > can the whole thing be done in a reasonable fashion? > > I'd expect that we're just looking at hooks around connection and > disconnection here here - if we're looking at much more it seems like we > must be doing something wrong. Connection and disconnection of what? In the example mentioned earlier, the GPIOs to power an on-board USB hub would have to be initialized when the host controller was started. You wouldn't want to wait for the on-board hub to be detected, because without those GPIOs set properly, it never would be discovered on the USB bus. Right? Perhaps the platform-level code would need to hook into the places where the discoverable bus is registered and unregistered. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
