1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 *
 4 *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
 5 *  Copyright (C) 2013 John Crispin <john@phrozen.org>
 6 */
 7
 8#include <linux/kernel.h>
 9#include <linux/init.h>
10#include <linux/export.h>
11#include <linux/clkdev.h>
12#include <linux/clk.h>
13#include <linux/clk-provider.h>
14
15#include <asm/time.h>
16
17#include "common.h"
18
19void ralink_clk_add(const char *dev, unsigned long rate)
20{
21	struct clk *clk = clk_register_fixed_rate(NULL, dev, NULL, 0, rate);
22
23	if (!clk)
24		panic("failed to add clock");
25
26	clkdev_create(clk, NULL, "%s", dev);
27}
28
29void __init plat_time_init(void)
30{
31	struct clk *clk;
32
33	ralink_of_remap();
34
35	ralink_clk_init();
36	clk = clk_get_sys("cpu", NULL);
37	if (IS_ERR(clk))
38		panic("unable to get CPU clock, err=%ld", PTR_ERR(clk));
39	pr_info("CPU Clock: %ldMHz\n", clk_get_rate(clk) / 1000000);
40	mips_hpt_frequency = clk_get_rate(clk) / 2;
41	clk_put(clk);
42	timer_probe();
43}