From owner-freebsd-arm@FreeBSD.ORG  Wed Mar 21 16:14:48 2007
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Date: Wed, 21 Mar 2007 18:14:24 +0200
From: Krassimir Slavchev <krassi@bulinfo.net>
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Subject: SD card speed?
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Hello,

I have made some test:

dd if=/dev/zero of=file.dat bs=1m count=10
SD card on arm           - 10485760 bytes transferred in 41.431916 secs 
(253084 bytes/sec)
NFS mount from arm - 10485760 bytes transferred in 6.181458 secs 
(1696325 bytes/sec)
SD card on i386 PC    - 10485760 bytes transferred in 6.765610 secs 
(1549862 bytes/sec)

The SD card is very slow on arm may be because it uses 1 bit bus.

Is there any problems with 4 bit bus support or my card is incorrectly 
detected?

Best Regards