Hello.
I'm a engineer of customer support.
Our customer try to develop USB2.0 driver of micro-ITRON.
C674x/OMAP-L1x USB2.0 has 2 types of interrupts.
One is USB core interrupt, and the other CPPI DMA completion interrupt.
They would like to find CPPI DMA completion interrupt from among a lot of interrupts.
To find it, they check PENDx register during ISR.
But, it does not do operation as our expectation.
Please let me know...
a) Are there sample code about CPPI DMA completion interrupt?
b) To find CPPI DMA completion during ISR, what registers should we check?
(DM644x USB has TCCPIRAWSR reg and RCPPIRAWSR reg to find DMA completion. C674x/OMAP-L1x doesn't have it.)
c) Are there some special sequence we should before return ISR?
(We must write CPPIEOIR reg on DM644x. But, C674x/OMAP-L1x doesn't have its reg.)
Best Regards
BL.HSR-WZ
