USB Host and MMC/SD Card Stack

[Martin Galvan]

Yes, it is, although the support (more precisely, the host side) was
added recently (and thus it's not yet on RTEMS' libbsd). These are the
files used by the Beaglebone Black:

http://svnweb.freebsd.org/base/head/sys/dev/usb/controller/musb_otg.c?revision=278850&view=markup
http://svnweb.freebsd.org/base/head/sys/arm/ti/am335x/am335x_musb.c?revision=283276&view=markup

Is there an easy way to port these to RTEMS? I'm not sure how much the
BSD driver infrastructure has changed since 8.2.

On Wed, Jun 17, 2015 at 8:07 AM, Sebastian Huber
<sebastian.huber at embedded-brains.de> wrote:
>
>
> On 16/06/15 21:28, Martin Galvan wrote:
>>
>> Sebastian Huber <sebastian.huber at embedded-brains.de> wrote:
>>>
>>> Which USB and MMC/SD card hardware modules has this chip?  Are they
>>> standard modules, e.g. EHCI, SDHC or something like this?
>>
>>  From what I saw, the USB module on the Beaglebone Black is built
>> around the Mentor musbmhdrc USB OTG controller, which is not EHCI or
>> OHCI compliant. The MMC/SD module is mostly compliant with SDHCI, with
>> a few quirks.
>
>
> Is this Mentor USB stuff supported by FreeBSD?  Writing a new USB host/OTG
> driver is a major task.
>
> --
> Sebastian Huber, embedded brains GmbH
>
> Address : Dornierstr. 4, D-82178 Puchheim, Germany
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> E-Mail  : sebastian.huber at embedded-brains.de
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>
> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>



-- 


Martin Galvan

Software Engineer

Taller Technologies Argentina


San Lorenzo 47, 3rd Floor, Office 5

Córdoba, Argentina

Phone: 54 351 4217888 / +54 351 4218211