> I am still trying to find my way thru the codebase in GIT; but here is
> what I can suggest based on similar problem diagnosed (still under
> test) on the OMAP3EVM:
>
> 1) Save/restore the GPIO_IRQENABLE1, GPIO_IRQENABLE2
> 2) Save/restore the GPIO_IRQSTATUS1, GPIO_IRQSTATUS2
For sure save/restore of IRQENABLE is needed. Our Labrador board which has Ethernet on per-gpio would stop to function after an OFF mode transition with out this save and restore (using CDP reference code).
I don't think STATUS is necessary. It’s a write 1 to clear register and should re-latch once there is data.
As a side note I was noting that the SMC9211 etherchip actually may need a dvfs pre-post notifier. During DVFS spurious interrupt events cause the interface to disable interrupts on its own on some tests.
Regards,
Richard W.
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