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