Test DMA Module

mount -t debugfs none /sys/kernel/debug/

insmod dmatest,ko    （Android shell, generic comand no effecte）

chmod 777 /sys/kernel/debug/dmatest/*

echo dma0chan0 > /sys/kernel/debug/dmatest/channel echo 2000 > /sys/kernel/debug/dmatest/timeout echo 10> /sys/kernel/debug/dmatest/iterations echo 1 > /sys/kernel/debug/dmatest/run

When test , other modules seems need to not use DMA(such as UART)

suppose when test, no other modules are useing dma controller (Don't know it is caused by test case or driver)

More info please refer to Documations/dmatest.txt