blob: 577c1a546f081a9749eaa07c99785b5e212a4ead [file] [log] [blame]
Minkyu Kang8bc4ee92009-10-01 17:20:40 +09001/*
2 * Copyright (C) 2008-2009 Samsung Electronics
3 * Kyungmin Park <kyungmin.park@samsung.com>
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Minkyu Kang8bc4ee92009-10-01 17:20:40 +09006 */
7
8#include <common.h>
Mike Frysinger7b15e2b2012-04-09 13:39:55 +00009#include <linux/compat.h>
Minkyu Kang8bc4ee92009-10-01 17:20:40 +090010#include <linux/mtd/mtd.h>
11#include <linux/mtd/onenand.h>
12#include <linux/mtd/samsung_onenand.h>
13
14#include <onenand_uboot.h>
15
16#include <asm/io.h>
17#include <asm/arch/clock.h>
18
19void onenand_board_init(struct mtd_info *mtd)
20{
21 struct onenand_chip *this = mtd->priv;
Minkyu Kangd93d0f02010-08-13 16:07:35 +090022 struct s5pc100_clock *clk =
23 (struct s5pc100_clock *)samsung_get_base_clock();
Minkyu Kang8bc4ee92009-10-01 17:20:40 +090024 struct samsung_onenand *onenand;
25 int value;
26
27 this->base = (void *)S5PC100_ONENAND_BASE;
28 onenand = (struct samsung_onenand *)this->base;
29
30 /* D0 Domain memory clock gating */
31 value = readl(&clk->gate_d01);
32 value &= ~(1 << 2); /* CLK_ONENANDC */
33 value |= (1 << 2);
34 writel(value, &clk->gate_d01);
35
36 value = readl(&clk->src0);
37 value &= ~(1 << 24); /* MUX_1nand: 0 from HCLKD0 */
38 value &= ~(1 << 20); /* MUX_HREF: 0 from FIN_27M */
39 writel(value, &clk->src0);
40
41 value = readl(&clk->div1);
42 value &= ~(3 << 16); /* PCLKD1_RATIO */
43 value |= (1 << 16);
44 writel(value, &clk->div1);
45
46 writel(ONENAND_MEM_RESET_COLD, &onenand->mem_reset);
47
48 while (!(readl(&onenand->int_err_stat) & RST_CMP))
49 continue;
50
51 writel(RST_CMP, &onenand->int_err_ack);
52
53 /*
54 * Access_Clock [2:0]
55 * 166 MHz, 134 Mhz : 3
56 * 100 Mhz, 60 Mhz : 2
57 */
58 writel(0x3, &onenand->acc_clock);
59
60 writel(INT_ERR_ALL, &onenand->int_err_mask);
61 writel(1 << 0, &onenand->int_pin_en); /* Enable */
62
63 value = readl(&onenand->int_err_mask);
64 value &= ~RDY_ACT;
65 writel(value, &onenand->int_err_mask);
66
67 s3c_onenand_init(mtd);
68}