arch/arm/mach-highbank/timer.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2010-2011 Calxeda, Inc.
   4  *
   5  * Based on arm926ejs/mx27/timer.c
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch-armv7/systimer.h>
  11
  12 #undef SYSTIMER_BASE
  13 #define SYSTIMER_BASE           0xFFF34000      /* Timer 0 and 1 base   */
  14
  15 static struct systimer *systimer_base = (struct systimer *)SYSTIMER_BASE;
  16
  17 /*
  18  * Start the timer
  19  */
  20 int timer_init(void)
  21 {
  22         /*
  23          * Setup timer0
  24          */
  25         writel(0, &systimer_base->timer0control);
  26         writel(SYSTIMER_RELOAD, &systimer_base->timer0load);
  27         writel(SYSTIMER_RELOAD, &systimer_base->timer0value);
  28         writel(SYSTIMER_EN | SYSTIMER_32BIT | SYSTIMER_PRESC_256,
  29                 &systimer_base->timer0control);
  30
  31         return 0;
  32
  33 }