mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-10 15:47:11 +02:00
89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
|
/*
|
||
|
|
* Ralink RT3662/RT3883 SoC specific setup
|
||
|
|
*
|
||
|
|
* Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
|
||
|
|
*
|
||
|
|
* Parts of this file are based on Ralink's 2.6.21 BSP
|
||
|
|
*
|
||
|
|
* 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/kernel.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <linux/err.h>
|
||
|
|
#include <linux/clk.h>
|
||
|
|
|
||
|
|
#include <asm/mips_machine.h>
|
||
|
|
#include <asm/reboot.h>
|
||
|
|
#include <asm/time.h>
|
||
|
|
|
||
|
|
#include <asm/mach-ralink/common.h>
|
||
|
|
#include <asm/mach-ralink/rt3883.h>
|
||
|
|
#include <asm/mach-ralink/rt3883_regs.h>
|
||
|
|
#include "common.h"
|
||
|
|
|
||
|
|
static void rt3883_restart(char *command)
|
||
|
|
{
|
||
|
|
rt3883_sysc_wr(RT3883_RSTCTRL_SYS, RT3883_SYSC_REG_RSTCTRL);
|
||
|
|
while (1)
|
||
|
|
if (cpu_wait)
|
||
|
|
cpu_wait();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void rt3883_halt(void)
|
||
|
|
{
|
||
|
|
while (1)
|
||
|
|
if (cpu_wait)
|
||
|
|
cpu_wait();
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned int __cpuinit get_c0_compare_irq(void)
|
||
|
|
{
|
||
|
|
return CP0_LEGACY_COMPARE_IRQ;
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init ramips_soc_setup(void)
|
||
|
|
{
|
||
|
|
struct clk *clk;
|
||
|
|
|
||
|
|
rt3883_sysc_base = ioremap_nocache(RT3883_SYSC_BASE, PAGE_SIZE);
|
||
|
|
rt3883_memc_base = ioremap_nocache(RT3883_MEMC_BASE, PAGE_SIZE);
|
||
|
|
|
||
|
|
rt3883_clocks_init();
|
||
|
|
|
||
|
|
clk = clk_get(NULL, "cpu");
|
||
|
|
if (IS_ERR(clk))
|
||
|
|
panic("unable to get CPU clock, err=%ld", PTR_ERR(clk));
|
||
|
|
|
||
|
|
printk(KERN_INFO "%s running at %lu.%02lu MHz\n", ramips_sys_type,
|
||
|
|
clk_get_rate(clk) / 1000000,
|
||
|
|
(clk_get_rate(clk) % 1000000) * 100 / 1000000);
|
||
|
|
|
||
|
|
_machine_restart = rt3883_restart;
|
||
|
|
_machine_halt = rt3883_halt;
|
||
|
|
pm_power_off = rt3883_halt;
|
||
|
|
|
||
|
|
clk = clk_get(NULL, "uart");
|
||
|
|
if (IS_ERR(clk))
|
||
|
|
panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
|
||
|
|
|
||
|
|
ramips_early_serial_setup(0, RT3883_UART0_BASE, clk_get_rate(clk),
|
||
|
|
RT3883_INTC_IRQ_UART0);
|
||
|
|
ramips_early_serial_setup(1, RT3883_UART1_BASE, clk_get_rate(clk),
|
||
|
|
RT3883_INTC_IRQ_UART1);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init plat_time_init(void)
|
||
|
|
{
|
||
|
|
struct clk *clk;
|
||
|
|
|
||
|
|
clk = clk_get(NULL, "cpu");
|
||
|
|
if (IS_ERR(clk))
|
||
|
|
panic("unable to get CPU clock, err=%ld", PTR_ERR(clk));
|
||
|
|
|
||
|
|
mips_hpt_frequency = clk_get_rate(clk) / 2;
|
||
|
|
}
|