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87 lines
1.5 KiB
87 lines
1.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* |
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* Copyright (C) 2011 Gabor Juhos <[email protected]> |
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* Copyright (C) 2013 John Crispin <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/export.h> |
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#include <linux/clkdev.h> |
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#include <linux/clk.h> |
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#include <asm/time.h> |
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#include "common.h" |
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struct clk { |
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struct clk_lookup cl; |
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unsigned long rate; |
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}; |
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void ralink_clk_add(const char *dev, unsigned long rate) |
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{ |
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struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL); |
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if (!clk) |
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panic("failed to add clock"); |
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clk->cl.dev_id = dev; |
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clk->cl.clk = clk; |
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clk->rate = rate; |
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clkdev_add(&clk->cl); |
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} |
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/* |
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* Linux clock API |
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*/ |
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int clk_enable(struct clk *clk) |
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{ |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(clk_enable); |
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void clk_disable(struct clk *clk) |
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{ |
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} |
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EXPORT_SYMBOL_GPL(clk_disable); |
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unsigned long clk_get_rate(struct clk *clk) |
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{ |
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if (!clk) |
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return 0; |
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return clk->rate; |
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} |
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EXPORT_SYMBOL_GPL(clk_get_rate); |
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int clk_set_rate(struct clk *clk, unsigned long rate) |
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{ |
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return -1; |
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} |
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EXPORT_SYMBOL_GPL(clk_set_rate); |
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long clk_round_rate(struct clk *clk, unsigned long rate) |
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{ |
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return -1; |
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} |
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EXPORT_SYMBOL_GPL(clk_round_rate); |
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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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ralink_of_remap(); |
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ralink_clk_init(); |
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clk = clk_get_sys("cpu", NULL); |
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if (IS_ERR(clk)) |
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panic("unable to get CPU clock, err=%ld", PTR_ERR(clk)); |
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pr_info("CPU Clock: %ldMHz\n", clk_get_rate(clk) / 1000000); |
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mips_hpt_frequency = clk_get_rate(clk) / 2; |
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clk_put(clk); |
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timer_probe(); |
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}
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