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OMPA-L138 interrupt enable at u-boot

SUN MYUNG PARK
Prodigy 30 points
Other Parts Discussed in Thread: OMAP-L138

hi.

i try to interrupt enable in u-boot.

so i am modified /include/configs/da850_evm.h

#undef CONFIG_USE_IRQ  ==> #define CONFIG_USE_IRQ

and , timer alarm interrupt enable.

0xFFFEE280(SECR) is set  affer  timer alarm is occur (0x01c23044, RTC_STATUS).

but, didn't call do_irq()

how can i IRQ enable with OMAP-L138 in u-boot.