1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Carsten Langgaard, carstenl@mips.com 4 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. 5 * 6 * Setting up the clock on the MIPS boards. 7 */ 8 9 #include <linux/init.h> 10 #include <linux/time.h> 11 #include <linux/err.h> 12 #include <linux/clk.h> 13 14 #include <asm/time.h> 15 #include <asm/mach-ar7/ar7.h> 16 plat_time_init(void)17void __init plat_time_init(void) 18 { 19 struct clk *cpu_clk; 20 21 /* Initialize ar7 clocks so the CPU clock frequency is correct */ 22 ar7_init_clocks(); 23 24 cpu_clk = clk_get(NULL, "cpu"); 25 if (IS_ERR(cpu_clk)) { 26 printk(KERN_ERR "unable to get cpu clock\n"); 27 return; 28 } 29 30 mips_hpt_frequency = clk_get_rate(cpu_clk) / 2; 31 } 32