82 строки
1.9 KiB
C
82 строки
1.9 KiB
C
/*
|
|
* Copyright (C) 2009 Hans J. Koch <hjk@linutronix.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/time.h>
|
|
|
|
#include <mach/clock.h>
|
|
#include <mach/tcc-nand.h>
|
|
#include <mach/tcc8k-regs.h>
|
|
|
|
#include "common.h"
|
|
|
|
#define XI_FREQUENCY 12000000
|
|
#define XTI_FREQUENCY 32768
|
|
|
|
#ifdef CONFIG_MTD_NAND_TCC
|
|
/* NAND */
|
|
static struct tcc_nand_platform_data tcc8k_sdk_nand_data = {
|
|
.width = 1,
|
|
.hw_ecc = 0,
|
|
};
|
|
#endif
|
|
|
|
static void __init tcc8k_init(void)
|
|
{
|
|
#ifdef CONFIG_MTD_NAND_TCC
|
|
tcc_nand_device.dev.platform_data = &tcc8k_sdk_nand_data;
|
|
platform_device_register(&tcc_nand_device);
|
|
#endif
|
|
}
|
|
|
|
static void __init tcc8k_init_timer(void)
|
|
{
|
|
tcc_clocks_init(XI_FREQUENCY, XTI_FREQUENCY);
|
|
}
|
|
|
|
static struct sys_timer tcc8k_timer = {
|
|
.init = tcc8k_init_timer,
|
|
};
|
|
|
|
static void __init tcc8k_map_io(void)
|
|
{
|
|
tcc8k_map_common_io();
|
|
|
|
/* set PLL0 clock to 96MHz, adapt UART0 divisor */
|
|
__raw_writel(0x00026003, CKC_BASE + PLL0CFG_OFFS);
|
|
__raw_writel(0x10000001, CKC_BASE + ACLKUART0_OFFS);
|
|
|
|
/* set PLL1 clock to 192MHz */
|
|
__raw_writel(0x00016003, CKC_BASE + PLL1CFG_OFFS);
|
|
|
|
/* set PLL2 clock to 48MHz */
|
|
__raw_writel(0x00036003, CKC_BASE + PLL2CFG_OFFS);
|
|
|
|
/* with CPU freq higher than 150 MHz, need extra DTCM wait */
|
|
__raw_writel(0x00000001, SCFG_BASE + DTCMWAIT_OFFS);
|
|
|
|
/* PLL locking time as specified */
|
|
udelay(300);
|
|
}
|
|
|
|
MACHINE_START(TCC8000_SDK, "Telechips TCC8000-SDK Demo Board")
|
|
.boot_params = PLAT_PHYS_OFFSET + 0x00000100,
|
|
.map_io = tcc8k_map_io,
|
|
.init_irq = tcc8k_init_irq,
|
|
.init_machine = tcc8k_init,
|
|
.timer = &tcc8k_timer,
|
|
MACHINE_END
|