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Altera_Forum
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20 years ago

uClinux MMC SPI Driver

Just to let everyone know, an MMC SPI Driver for Alteras SPI Core (modified) is in the works.. currently, cards can be recognized, read/write, and even partitioned.. but some bugs are being worked ou...
Altera_Forum's avatar
Altera_Forum
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20 years ago

I wonder if others can help out the tests,

I am testing with altera cf core to a cf drive of 1GB, formated to fat.

mount -t vfat /dev/hda1 /mnt

dd count=1000000 bs=512 if=/dev/zero of=/mnt/z2

free (or df)

it will write a file of 500MB of zero. after the dd write, the next command will have "page allocation" fault with a new kernel.

When I reduce the ddr size in ptf, without change to sof, from 64M to 8M,16M,32M, the problem disappeared.