arch/arm/mach-socfpga/timer.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  Copyright (C) 2012 Altera Corporation <www.altera.com>
   4  */
   5
   6 #include <common.h>
   7 #include <asm/io.h>
   8 #include <asm/arch/timer.h>
   9
  10 #define TIMER_LOAD_VAL          0xFFFFFFFF
  11
  12 static const struct socfpga_timer *timer_base = (void *)CONFIG_SYS_TIMERBASE;
  13
  14 /*
  15  * Timer initialization
  16  */
  17 int timer_init(void)
  18 {
  19         writel(TIMER_LOAD_VAL, &timer_base->load_val);
  20         writel(TIMER_LOAD_VAL, &timer_base->curr_val);
  21         writel(readl(&timer_base->ctrl) | 0x3, &timer_base->ctrl);
  22         return 0;
  23 }