forked from luck/tmp_suning_uos_patched
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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