59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
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/*
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* Pistachio clocksource/timer setup
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*
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* Copyright (C) 2014 Google, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include <linux/clocksource.h>
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#include <linux/init.h>
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#include <linux/irqchip/mips-gic.h>
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#include <linux/of.h>
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#include <asm/time.h>
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unsigned int get_c0_compare_int(void)
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{
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return gic_get_c0_compare_int();
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}
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int get_c0_perfcount_int(void)
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{
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return gic_get_c0_perfcount_int();
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}
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EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
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int get_c0_fdc_int(void)
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{
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return gic_get_c0_fdc_int();
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}
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void __init plat_time_init(void)
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{
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struct device_node *np;
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struct clk *clk;
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of_clk_init(NULL);
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clocksource_probe();
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np = of_get_cpu_node(0, NULL);
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if (!np) {
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pr_err("Failed to get CPU node\n");
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return;
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}
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clk = of_clk_get(np, 0);
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if (IS_ERR(clk)) {
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pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
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return;
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}
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mips_hpt_frequency = clk_get_rate(clk) / 2;
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clk_put(clk);
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}
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