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4d30e82c26
The OMAP2 and OMAP3 boot-time MPU rate change code is almost identical. Merge them into mach-omap2/clock.c, and add kerneldoc documentation. Signed-off-by: Paul Walmsley <paul@pwsan.com>
74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
/*
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* clock2xxx.c - OMAP2xxx-specific clock integration code
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*
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* Copyright (C) 2005-2008 Texas Instruments, Inc.
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* Copyright (C) 2004-2010 Nokia Corporation
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*
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* Contacts:
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* Richard Woodruff <r-woodruff2@ti.com>
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* Paul Walmsley
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*
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* Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
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* Gordon McNutt and RidgeRun, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it 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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#undef DEBUG
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <plat/clock.h>
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#include "clock.h"
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#include "clock2xxx.h"
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#include "cm.h"
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#include "cm-regbits-24xx.h"
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struct clk *vclk, *sclk, *dclk;
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/*
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* Omap24xx specific clock functions
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*/
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/*
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* Set clocks for bypass mode for reboot to work.
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*/
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void omap2xxx_clk_prepare_for_reboot(void)
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{
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u32 rate;
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if (vclk == NULL || sclk == NULL)
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return;
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rate = clk_get_rate(sclk);
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clk_set_rate(vclk, rate);
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}
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/*
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* Switch the MPU rate if specified on cmdline. We cannot do this
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* early until cmdline is parsed. XXX This should be removed from the
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* clock code and handled by the OPP layer code in the near future.
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*/
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static int __init omap2xxx_clk_arch_init(void)
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{
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int ret;
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if (!cpu_is_omap24xx())
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return 0;
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ret = omap2_clk_switch_mpurate_at_boot("virt_prcm_set");
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if (!ret)
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omap2_clk_print_new_rates("sys_ck", "dpll_ck", "mpu_ck");
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return ret;
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}
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arch_initcall(omap2xxx_clk_arch_init);
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