On Thu, 12 Oct 2017, Martin Blumenstingl wrote: > I haven't tested the described use-case. however, this patch is not > supposed to change the binding for actual devices. > USB device numbering starts at 1, while 0 is reserved for the root-hub > (at least from what I know). Actually 1 is reserved for the root hub. External devices are numbered starting from 2. (We can't use 0 for the root hub because, as you said, USB device numbering starts at 1!) Alan Stern > before this patch there was no way to > describe the root-hub via .dts. this however is required for some > platforms that need to set up a PHY for each port on the root-hub > (Amlogic Meson GXL platform is one example: there are two ports > enabled on dwc3's root-hub with 2x USB2 and 1x USB3 PHYs) - so this > patch uses a similar binding as we already have (to describe the > devices) to describe the root-hub > > > Regards, > Martin > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- 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
