1 /* 2 * Copyright (C) 2017 Free Electrons 3 * Copyright (C) 2017 NextThing Co 4 * 5 * Author: Boris Brezillon <boris.brezillon@free-electrons.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 18 #include <linux/mtd/rawnand.h> 19 20 static int macronix_nand_init(struct nand_chip *chip) 21 { 22 if (nand_is_slc(chip)) 23 chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; 24 25 /* 26 * MX30LF2G18AC chip does not support using SET/GET_FEATURES to change 27 * the timings unlike what is declared in the parameter page. Unflag 28 * this feature to avoid unnecessary downturns. 29 */ 30 if (chip->parameters.supports_set_get_features && 31 !strcmp("MX30LF2G18AC", chip->parameters.model)) { 32 bitmap_clear(chip->parameters.get_feature_list, 33 ONFI_FEATURE_ADDR_TIMING_MODE, 1); 34 bitmap_clear(chip->parameters.set_feature_list, 35 ONFI_FEATURE_ADDR_TIMING_MODE, 1); 36 } 37 38 return 0; 39 } 40 41 const struct nand_manufacturer_ops macronix_nand_manuf_ops = { 42 .init = macronix_nand_init, 43 }; 44