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Interrupt pin of the PMIC in OMAP L138 EVM

I'm working on the OMAP L138 EVM. The touch screen is connected to the PMIC TS65070, whose interrupt PIN is connected to the NMI (non maskable interrupt) pin of L138.

Is the schematic correct? If so, I can't bind an ISR to the NMI pin. I want to know why the PMIC Int isn't connected to a GPIO? Thanks!