S5920_INTCSR
intcsr = ioread32(board->conf_addr + S5920_INTCSR);
iowrite32(intcsr, board->conf_addr + S5920_INTCSR);
tmp_en_io = ioread32(board->conf_addr + S5920_INTCSR);
iowrite32(tmp_en_io, board->conf_addr + S5920_INTCSR);