sunxi_nfc_select_chip
sunxi_nfc_select_chip(nand, nand->cur_cs);
sunxi_nfc_select_chip(nand, nand->cur_cs);
sunxi_nfc_select_chip(nand, nand->cur_cs);
sunxi_nfc_select_chip(nand, nand->cur_cs);
sunxi_nfc_select_chip(nand, nand->cur_cs);
sunxi_nfc_select_chip(nand, nand->cur_cs);
sunxi_nfc_select_chip(nand, nand->cur_cs);
sunxi_nfc_select_chip(nand, op->cs);