[deliverable/linux.git] / arch / mips / xilfpga / time.c

/*
 * Xilfpga clocksource/timer setup
 *
 * Copyright (C) 2015 Imagination Technologies
 * Author: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 */

#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clocksource.h>
#include <linux/of.h>

#include <asm/time.h>

void __init plat_time_init(void)
{
	struct device_node *np;
	struct clk *clk;

	of_clk_init(NULL);
	clocksource_probe();

	np = of_get_cpu_node(0, NULL);
	if (!np) {
		pr_err("Failed to get CPU node\n");
		return;
	}

	clk = of_clk_get(np, 0);
	if (IS_ERR(clk)) {
		pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
		return;
	}

	mips_hpt_frequency = clk_get_rate(clk) / 2;
	clk_put(clk);
}
Commit	Line	Data
9937f5ff ZLK	1	/*
	2	* Xilfpga clocksource/timer setup
	3	*
	4	* Copyright (C) 2015 Imagination Technologies
	5	* Author: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms and conditions of the GNU General Public License,
	9	* version 2, as published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/clk.h>
	13	#include <linux/clk-provider.h>
	14	#include <linux/clocksource.h>
	15	#include <linux/of.h>
	16
	17	#include <asm/time.h>
	18
	19	void __init plat_time_init(void)
	20	{
	21	struct device_node *np;
	22	struct clk *clk;
	23
	24	of_clk_init(NULL);
b84da9fa	25	clocksource_probe();
9937f5ff ZLK	26
	27	np = of_get_cpu_node(0, NULL);
	28	if (!np) {
	29	pr_err("Failed to get CPU node\n");
	30	return;
	31	}
	32
	33	clk = of_clk_get(np, 0);
	34	if (IS_ERR(clk)) {
	35	pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
	36	return;
	37	}
	38
	39	mips_hpt_frequency = clk_get_rate(clk) / 2;
	40	clk_put(clk);
	41	}