I've been working on implementing the starterware USB bulk drivers into our sys/bios system on a custom board based on the OMAPL-138EVM board from logicPD.
So far everything is working after boot up, however when I restart the program or perform a system reset I stop getting any Usb0 interrupts. Only after a power cycle does the program work.
I've checked the register values when it fails, and it seems that the Usb peripheral is still generating interrupts as USB0DSP_INTMASKEDR.EP0 is 1. The event #19 is also still linked to int6 in DSPINTC0DSP_INTMUX1.INTSEL6 and int6 is enabled in IER.IE06.
The Host-pc detects the device, but fails to enumerate as the device will never respond if it's interrupt is never triggered.
I'm out of ideas what could cause the interrupt service routine to never run after a restart.
Other interrupts, like for example the SPI, are still functioning.