arch/mips/loongson32/common/time.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2014 Zhang, Keguang <keguang.zhang@gmail.com>
   4  */
   5
   6 #include <linux/clk.h>
   7 #include <linux/of_clk.h>
   8 #include <asm/time.h>
   9
  10 void __init plat_time_init(void)
  11 {
  12         struct clk *clk = NULL;
  13
  14         /* initialize LS1X clocks */
  15         of_clk_init(NULL);
  16
  17         /* setup mips r4k timer */
  18         clk = clk_get(NULL, "cpu_clk");
  19         if (IS_ERR(clk))
  20                 panic("unable to get cpu clock, err=%ld", PTR_ERR(clk));
  21
  22         mips_hpt_frequency = clk_get_rate(clk) / 2;
  23 }