Date: Sat, 14 May 2016 13:50:23 -0500 From: Neal Horman <neal@wanlink.com> To: freebsd-usb@freebsd.org Subject: Re: ehci_disown - Olimex ARM A20 Lime & USB FTDI RS-485 shuts down USB port Message-ID: <5737736F.9040308@wanlink.com> In-Reply-To: <mailman.35.1463054400.56334.freebsd-usb@freebsd.org> References: <mailman.35.1463054400.56334.freebsd-usb@freebsd.org>
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This is a cryptographically signed message in MIME format. --------------ms050302060907050605050404 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable On 5/12/16 7:00 AM, freebsd-usb-request@freebsd.org wrote: >> ehci_disown() means that there should be a full speed controller that = should >> handle the device, because it is not high-speed. Does your board have >> OHCI/UHCI or only EHCI? How are the USB parts wired. Is there a High-S= peed TT >> (USB HUB chip) connected to the EHCI port? > The A20 SoC has an OHCI controller but the ALLWINNER kernel is missing = the > ohci driver. There is a patch for review here: https://reviews.freebsd.= org/D5481 > > Cheers, > Jared Jared: Thanks for pointing me to the patch, that was very helpful. All: I can report that I was able to apply the D5481 patch to svn.head=20 revision 298609 after changing the kernel conf A20 patched file name to=20 ALLWINNER. The kernel built without errors. I installed the kernel, and the ohci driver appears to attach and=20 work correctly with my FTDI devices. Emanuel: Overall, I'd like to see this committed because it appears to be=20 functional. Although, I wouldn't / don't expect to have to include the "device=20 ohci" and "device generic_ohc" drivers for the kernel to work correctly=20 on the platform. It just doesn't make sense in my mind and doesn't feel right. Thanks for the work that your doing on the Allwinner SOCs ! 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