Date: Sun, 07 Apr 2013 09:09:14 +0200 From: Hans Petter Selasky <hps@bitfrost.no> To: Oleksandr Tymoshenko <gonzo@bluezbox.com> Cc: arm@freebsd.org, usb@freebsd.org Subject: Re: Beaglebone USB driver (Mentor Graphics OTG) Message-ID: <51611B9A.30407@bitfrost.no> In-Reply-To: <51608AA4.2020804@bluezbox.com> References: <51608AA4.2020804@bluezbox.com>
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On 04/06/13 22:50, Oleksandr Tymoshenko wrote: > Hello, > > This is first iteration of Host Mode support for Mentor Graphics > OTG USB controller. I tested it by building kernel with USB memory > stick mounted as /usr/obj, resulting kernel was bootable and worked fine. > I reused some ideas (mostly for channel-management) from > DWT OTG driver. > > Some pieces are still missing: > - Support for SPLIT transactions, I don not have high speed hub > right now to test it, but implementing it should be really > straighforward. > - Isochronous transfers. I do not have hardware to test this. Does > anybody have any suggestion about simple use case? > - Control Data OUT transaction > - Wrapper for atmel HW has not ben synced with new core logic requirements > yet > > Please review and test. I tested it only with gcc-built kernel/world. > Now when > first iteration is finished I'm going to update all my boards to new > world order > (clang/EABI) and re-test this stuff. > > Patch: > http://people.freebsd.org/~gonzo/arm/patches/beaglebone-musb.diff Hi, Supporting split transactions is required: + + /* SPLIT transaction */ + MUSB2_WRITE_1(sc, MUSB2_REG_RXHADDR(0), 0); + MUSB2_WRITE_1(sc, MUSB2_REG_RXHUBPORT(0), 0); + See EHCI driver: EHCI_QH_SET_HUBA(xfer->xroot->udev->hs_hub_addr) | EHCI_QH_SET_PORT(xfer->xroot->udev->hs_port_no)); This feature should be enabled when: Connected root HUB port is running HIGH speed, and the connected device is LOW or FULL speed. Try connecting a USB keyboard through any high speed USB HUB. --HPS
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