All,
I'm testing USB driver with DMA support. My custom board have 256M
DDR memory.
When i set mem=112M in bootargs, USB works well with DMA mode. When i
set mem=120M,
kernel boot ok, but USB driver crashed while writing. I thought it
caused by system memory map.
we know 0x800000000-0x87800000 (120M) reserved for linux on DVEVM
default memory map.
It seems usb should work when mem=120M passed to bootargs. I'm not sure
this issue may be a
bug in the usb driver.
Any thoughts on that? Thank you!
Frank
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