USB Host and MMC/SD Card Stack

Martin Galvan martin.galvan at
Tue Jun 16 19:28:11 UTC 2015

Sebastian Huber <sebastian.huber at> 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.

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