1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2003
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
7 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
12 #include <asm/immap.h>
14 #if defined(CONFIG_CMD_NAND)
16 #include <linux/mtd/mtd.h>
17 #include <linux/mtd/rawnand.h>
22 static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl)
24 struct nand_chip *this = mtd_to_nand(mtdinfo);
25 volatile u16 *nCE = (u16 *) CFG_SYS_LATCH_ADDR;
27 if (ctrl & NAND_CTRL_CHANGE) {
28 ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
30 IO_ADDR_W &= ~(SET_ALE | SET_CLE);
42 this->IO_ADDR_W = (void *)IO_ADDR_W;
45 if (cmd != NAND_CMD_NONE)
46 writeb(cmd, this->IO_ADDR_W);
49 int board_nand_init(struct nand_chip *nand)
51 gpio_t *gpio = (gpio_t *) MMAP_GPIO;
54 * set up pin configuration - enabled 2nd output buffer's signals
55 * (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc)
58 clrbits_8(&gpio->par_timer, GPIO_PAR_TIN3_TIN3);
59 setbits_8(&gpio->pddr_timer, 0x08);
60 setbits_8(&gpio->ppd_timer, 0x08);
61 out_8(&gpio->pclrr_timer, 0);
62 out_8(&gpio->podr_timer, 0);
64 nand->chip_delay = 60;
65 nand->ecc.mode = NAND_ECC_SOFT;
66 nand->cmd_ctrl = nand_hwcontrol;