Have a look at the Atmel driver in sys/arm/at91/at91_mci.c. It
interfaces to the mmc/sd driver code in sys/dev, and uses DMA. The
driver in -current does only single-block transfers; if you add my
patches from http://www.freebsd.org/cgi/query-pr.cgi?pr=155214 it will
do multiblock transfers as we
Hi,
During my GSoC work on LPC32x0 port, I've discovered that
ARM PL180 MMC/SD controller present in SoC has completely
useless PIO mode. That is, controller can't stop card clock
when Rx FIFO buffer is full. This leads to permanent Rx
overrun errors when CPU doesn't react to arriving data as
fas
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