2 * (C) Copyright 2007-2008
3 * Stelian Pop <stelian.pop <at> leadtechdesign.com>
4 * Lead Tech Design <www.leadtechdesign.com>
6 * (C) Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <asm/arch/at91cap9.h>
29 #include <asm/arch/gpio.h>
30 #include <asm/arch/at91_pio.h>
32 #ifdef CONFIG_CMD_NAND
37 * hardware specific access to control-lines
39 #define MASK_ALE (1 << 21) /* our ALE is AD21 */
40 #define MASK_CLE (1 << 22) /* our CLE is AD22 */
42 static void at91cap9adk_nand_hwcontrol(struct mtd_info *mtd, int cmd)
44 struct nand_chip *this = mtd->priv;
45 ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
47 IO_ADDR_W &= ~(MASK_ALE|MASK_CLE);
50 IO_ADDR_W |= MASK_CLE;
53 IO_ADDR_W |= MASK_ALE;
56 at91_set_gpio_value(AT91_PIN_PD15, 1);
59 at91_set_gpio_value(AT91_PIN_PD15, 0);
62 this->IO_ADDR_W = (void *) IO_ADDR_W;
65 int board_nand_init(struct nand_chip *nand)
67 nand->eccmode = NAND_ECC_SOFT;
68 nand->hwcontrol = at91cap9adk_nand_hwcontrol;
69 nand->chip_delay = 20;