I have download and build the
kernel and Test it on overo Gumstix board.
Initally i have unable to understand the working of the driver uxactly so i
have bypass the DMA and the gpio144 and gpio146 and test the GPMC only. But
this gives very slow speed of transfering data around few hundred KBPS
because of the time consumed by the write initialiazaton of user
application. it is around 8ms for wach write call.
How can i reduce the time , i mean to say i want to acess the memory pointer
directly from user application without calling the driver write operation.
(dont know the exact method but something like memory mapping).
also i am unable to test the data transfer with DMA. it give" dma
missaligned err with device 0"
Will you please share me the details u have observed. also how much speed u
Thanks in advance
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