2 * Copyright (C) 2017 Free Electrons
3 * Copyright (C) 2017 NextThing Co
5 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
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.
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.
18 #include "internals.h"
21 * Macronix AC series does not support using SET/GET_FEATURES to change
22 * the timings unlike what is declared in the parameter page. Unflag
23 * this feature to avoid unnecessary downturns.
25 static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip)
28 static const char * const broken_get_timings[] = {
45 if (!chip->parameters.supports_set_get_features)
48 for (i = 0; i < ARRAY_SIZE(broken_get_timings); i++) {
49 if (!strcmp(broken_get_timings[i], chip->parameters.model))
53 if (i == ARRAY_SIZE(broken_get_timings))
56 bitmap_clear(chip->parameters.get_feature_list,
57 ONFI_FEATURE_ADDR_TIMING_MODE, 1);
58 bitmap_clear(chip->parameters.set_feature_list,
59 ONFI_FEATURE_ADDR_TIMING_MODE, 1);
62 static int macronix_nand_init(struct nand_chip *chip)
64 if (nand_is_slc(chip))
65 chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
67 macronix_nand_fix_broken_get_timings(chip);
72 const struct nand_manufacturer_ops macronix_nand_manuf_ops = {
73 .init = macronix_nand_init,