arch/arm/mach-imx/localtimer.c

   1 /*
   2  * Copyright 2011 Freescale Semiconductor, Inc.
   3  * Copyright 2011 Linaro Ltd.
   4  *
   5  * The code contained herein is licensed under the GNU General Public
   6  * License. You may obtain a copy of the GNU General Public License
   7  * Version 2 or later at the following locations:
   8  *
   9  * http://www.opensource.org/licenses/gpl-license.html
  10  * http://www.gnu.org/copyleft/gpl.html
  11  */
  12
  13 #include <linux/init.h>
  14 #include <linux/clockchips.h>
  15 #include <linux/of_address.h>
  16 #include <linux/of_irq.h>
  17 #include <asm/smp_twd.h>
  18
  19 /*
  20  * Setup the local clock events for a CPU.
  21  */
  22 int __cpuinit local_timer_setup(struct clock_event_device *evt)
  23 {
  24         struct device_node *np;
  25
  26         np = of_find_compatible_node(NULL, NULL, "arm,smp-twd");
  27         if (!twd_base) {
  28                 twd_base = of_iomap(np, 0);
  29                 WARN_ON(!twd_base);
  30         }
  31         evt->irq = irq_of_parse_and_map(np, 0);
  32         twd_timer_setup(evt);
  33
  34         return 0;
  35 }