PRU_INTC_CMR
val = pruss_intc_read_reg(intc, PRU_INTC_CMR(idx));
pruss_intc_write_reg(intc, PRU_INTC_CMR(idx), val);
idx, pruss_intc_read_reg(intc, PRU_INTC_CMR(idx)));
pruss_intc_write_reg(intc, PRU_INTC_CMR(i), 0);