* (C) Copyright 2000-2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
- * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
*
* See file CREDITS for list of people who contributed to this
static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl)
{
struct nand_chip *this = mtdinfo->priv;
- volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
- u32 nand_baseaddr = (u32) this->IO_ADDR_W;
+ volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR;
if (ctrl & NAND_CTRL_CHANGE) {
ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
- IO_ADDR_W &= ~(SET_ALE | SE_CLE);
+
+ IO_ADDR_W &= ~(SET_ALE | SET_CLE);
+
+ if (ctrl & NAND_NCE)
+ *nCE &= 0xFFFB;
+ else
+ *nCE |= 0x0004;
if (ctrl & NAND_CLE)
IO_ADDR_W |= SET_CLE;
if (ctrl & NAND_ALE)
IO_ADDR_W |= SET_ALE;
- at91_set_gpio_value(AT91_PIN_PD15, !(ctrl & NAND_NCE));
this->IO_ADDR_W = (void *)IO_ADDR_W;
}
int board_nand_init(struct nand_chip *nand)
{
- volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
- volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
+ gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+ fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
- *((volatile u16 *)CONFIG_SYS_LATCH_ADDR) |= 0x0004;
- fbcs->csmr2 &= ~FBCS_CSMR_WP;
+ clrbits_be32(&fbcs->csmr2, FBCS_CSMR_WP);
- /* set up pin configuration */
- gpio->par_timer &= ~GPIO_PAR_TIN3_TIN3;
- gpio->pddr_timer |= 0x08;
- gpio->ppd_timer |= 0x08;
- gpio->pclrr_timer = 0;
- gpio->podr_timer = 0;
+ /*
+ * set up pin configuration - enabled 2nd output buffer's signals
+ * (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc)
+ * to use nCE signal
+ */
+ clrbits_8(&gpio->par_timer, GPIO_PAR_TIN3_TIN3);
+ setbits_8(&gpio->pddr_timer, 0x08);
+ setbits_8(&gpio->ppd_timer, 0x08);
+ out_8(&gpio->pclrr_timer, 0);
+ out_8(&gpio->podr_timer, 0);
- nand->chip_delay = 50;
+ nand->chip_delay = 60;
nand->ecc.mode = NAND_ECC_SOFT;
nand->cmd_ctrl = nand_hwcontrol;