/* * 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); } |