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0bc6791707
TNETD7200 run their CPU clock faster than the default CPU clock we assume. In order to have the correct loops per jiffies settings, initialize clocks right before setting mips_hpt_frequency. As a side effect, we can no longer use msleep in clocks.c which requires other parts of the kernel to be initialized, so replace these with mdelay. Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1749/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
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* Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
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*
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* This program is free software; you can distribute it and/or modify it
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* under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Setting up the clock on the MIPS boards.
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*/
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#include <linux/init.h>
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#include <linux/time.h>
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#include <linux/err.h>
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#include <linux/clk.h>
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#include <asm/time.h>
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#include <asm/mach-ar7/ar7.h>
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void __init plat_time_init(void)
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{
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struct clk *cpu_clk;
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/* Initialize ar7 clocks so the CPU clock frequency is correct */
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ar7_init_clocks();
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cpu_clk = clk_get(NULL, "cpu");
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if (IS_ERR(cpu_clk)) {
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printk(KERN_ERR "unable to get cpu clock\n");
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return;
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}
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mips_hpt_frequency = clk_get_rate(cpu_clk) / 2;
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}
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