Hi, On Sun, Feb 20, 2022 at 11:12:57AM +0100, Pavel Machek wrote: > Hi! > > > From: Tommaso Merciai <tomm.merciai@xxxxxxxxx> > > > > [ Upstream commit 5c2b9c61ae5d8ad0a196d33b66ce44543be22281 ] > > > > Add support for boost-up register of usb251xb hub. > > boost-up property control USB electrical drive strength > > This register can be set: > > > > - Normal mode -> 0x00 > > - Low -> 0x01 > > - Medium -> 0x10 > > - High -> 0x11 > > > > (Normal Default) > > > > References: > > - http://www.mouser.com/catalog/specsheets/2514.pdf p29 > > Should the boost-up property be documented somewhere in the kernel > tree? We normally do that for device tree properties. And we normally > have properties used somewhere in the device tree. What is going on here? AFAIK this patch was dropped for all stable releases, so this specific AUTOSEL message/thread is obsolete. Nonetheless the DT documentation is also missing on master. Therefore I guess it should be provided asap 😉 Tommaso, can you provide a patch? regards;rl > > Best regards, > Pavel