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47 lines
929 B
47 lines
929 B
// 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, [email protected] |
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* |
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* Copyright (C) 2009 Lemote Inc. |
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* Author: Wu Zhangjin, [email protected] |
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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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