Freescale QorIQ

[Sebastian Huber]

On 01/07/2011 10:14 PM, Andrei Chichak wrote:
> Hi Sebastian,
> 
> After spending way too much time getting SD cards working on my Coldfire 5282, could I ask you, with your work on the SDHC driver, could you please add in a small example program of how to set it all up, read, write? The learning curve for libi2c was a bit too steep, perhaps next project.

The SDHC (Secure Digital Host Controller) is a good example for a standard
controller that is available on many chips.  In FreeBSD the adjustment to a
specific implementation is done through the bus_space(9) API and quirks.  This
makes it possible to port the FreeBSD driver easily to RTEMS.  In general it is
a bad idea to add this generic SDHC driver to a specific BSP (some people in
the RTEMS community disagree here).  Due to some open problems we decided to
add the SDHC driver only to the QorIQ BSP.  This is also related to the missing
integration of the USB stack.  To address these open problems we first need a
budget.

In the long run my aim is to make it as easy as possible to use FreeBSD driver
code in RTEMS, but this is controversial in the RTEMS community.

[...]

-- 
Sebastian Huber, embedded brains GmbH

Address : Obere Lagerstr. 30, D-82178 Puchheim, Germany
Phone   : +49 89 18 90 80 79-6
Fax     : +49 89 18 90 80 79-9
E-Mail  : sebastian.huber at embedded-brains.de
PGP     : Public key available on request.

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