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kernel/linux-imx6_3.14.28/arch/arm/mach-ux500/timer.c 1.04 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * Copyright (C) ST-Ericsson SA 2011
   *
   * License Terms: GNU General Public License v2
   * Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson
   */
  #include <linux/io.h>
  #include <linux/errno.h>
  #include <linux/clksrc-dbx500-prcmu.h>
  #include <linux/clocksource.h>
  #include <linux/of.h>
  #include <linux/of_address.h>
  
  #include "setup.h"
  
  #include "db8500-regs.h"
  #include "id.h"
  
  const static struct of_device_id prcmu_timer_of_match[] __initconst = {
  	{ .compatible = "stericsson,db8500-prcmu-timer-4", },
  	{ },
  };
  
  void __init ux500_timer_init(void)
  {
  	void __iomem *prcmu_timer_base;
  	void __iomem *tmp_base;
  	struct device_node *np;
  
  	if (cpu_is_u8500_family() || cpu_is_ux540_family())
  		prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
  	else
  		ux500_unknown_soc();
  
  	np = of_find_matching_node(NULL, prcmu_timer_of_match);
  	if (!np)
  		goto dt_fail;
  
  	tmp_base = of_iomap(np, 0);
  	if (!tmp_base)
  		goto dt_fail;
  
  	prcmu_timer_base = tmp_base;
  
  dt_fail:
  	clksrc_dbx500_prcmu_init(prcmu_timer_base);
  	clocksource_of_init();
  }