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/*
* Copyright (C) 2008-2009 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <linux/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/onenand.h>
#include <linux/mtd/samsung_onenand.h>
#include <onenand_uboot.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
void onenand_board_init(struct mtd_info *mtd)
{
struct onenand_chip *this = mtd->priv;
struct s5pc100_clock *clk =
(struct s5pc100_clock *)samsung_get_base_clock();
struct samsung_onenand *onenand;
int value;
this->base = (void *)S5PC100_ONENAND_BASE;
onenand = (struct samsung_onenand *)this->base;
/* D0 Domain memory clock gating */
value = readl(&clk->gate_d01);
value &= ~(1 << 2); /* CLK_ONENANDC */
value |= (1 << 2);
writel(value, &clk->gate_d01);
value = readl(&clk->src0);
value &= ~(1 << 24); /* MUX_1nand: 0 from HCLKD0 */
value &= ~(1 << 20); /* MUX_HREF: 0 from FIN_27M */
writel(value, &clk->src0);
value = readl(&clk->div1);
value &= ~(3 << 16); /* PCLKD1_RATIO */
value |= (1 << 16);
writel(value, &clk->div1);
writel(ONENAND_MEM_RESET_COLD, &onenand->mem_reset);
while (!(readl(&onenand->int_err_stat) & RST_CMP))
continue;
writel(RST_CMP, &onenand->int_err_ack);
/*
* Access_Clock [2:0]
* 166 MHz, 134 Mhz : 3
* 100 Mhz, 60 Mhz : 2
*/
writel(0x3, &onenand->acc_clock);
writel(INT_ERR_ALL, &onenand->int_err_mask);
writel(1 << 0, &onenand->int_pin_en); /* Enable */
value = readl(&onenand->int_err_mask);
value &= ~RDY_ACT;
writel(value, &onenand->int_err_mask);
s3c_onenand_init(mtd);
}
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