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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
* Author: Fuxin Zhang, zhangfx@lemote.com
*
* Copyright (C) 2009 Lemote Inc.
* Author: Wu Zhangjin, wuzhangjin@gmail.com
*/
#include <asm/time.h>
#include <asm/hpet.h>
#include <loongson.h>
#include <linux/clk.h>
#include <linux/of_clk.h>
void __init plat_time_init(void)
{
struct clk *clk;
struct device_node *np;
if (loongson_sysconf.fw_interface == LOONGSON_DTB) {
of_clk_init(NULL);
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;
}
cpu_clock_freq = clk_get_rate(clk);
clk_put(clk);
}
/* setup mips r4k timer */
mips_hpt_frequency = cpu_clock_freq / 2;
#ifdef CONFIG_RS780_HPET
setup_hpet_timer();
#endif
}
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