70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2008-2009 Samsung Electronics
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* Kyungmin Park <kyungmin.park@samsung.com>
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*/
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#include <common.h>
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#include <linux/compat.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/onenand.h>
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#include <linux/mtd/samsung_onenand.h>
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#include <onenand_uboot.h>
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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int onenand_board_init(struct mtd_info *mtd)
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{
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struct onenand_chip *this = mtd->priv;
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struct s5pc100_clock *clk =
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(struct s5pc100_clock *)samsung_get_base_clock();
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struct samsung_onenand *onenand;
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int value;
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this->base = (void *)S5PC100_ONENAND_BASE;
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onenand = (struct samsung_onenand *)this->base;
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/* D0 Domain memory clock gating */
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value = readl(&clk->gate_d01);
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value &= ~(1 << 2); /* CLK_ONENANDC */
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value |= (1 << 2);
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writel(value, &clk->gate_d01);
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value = readl(&clk->src0);
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value &= ~(1 << 24); /* MUX_1nand: 0 from HCLKD0 */
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value &= ~(1 << 20); /* MUX_HREF: 0 from FIN_27M */
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writel(value, &clk->src0);
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value = readl(&clk->div1);
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value &= ~(3 << 16); /* PCLKD1_RATIO */
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value |= (1 << 16);
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writel(value, &clk->div1);
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writel(ONENAND_MEM_RESET_COLD, &onenand->mem_reset);
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while (!(readl(&onenand->int_err_stat) & RST_CMP))
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continue;
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writel(RST_CMP, &onenand->int_err_ack);
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/*
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* Access_Clock [2:0]
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* 166 MHz, 134 Mhz : 3
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* 100 Mhz, 60 Mhz : 2
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*/
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writel(0x3, &onenand->acc_clock);
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writel(INT_ERR_ALL, &onenand->int_err_mask);
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writel(1 << 0, &onenand->int_pin_en); /* Enable */
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value = readl(&onenand->int_err_mask);
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value &= ~RDY_ACT;
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writel(value, &onenand->int_err_mask);
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s3c_onenand_init(mtd);
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return 0;
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}
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