1/* 2 * clock2xxx.c - OMAP2xxx-specific clock integration code 3 * 4 * Copyright (C) 2005-2008 Texas Instruments, Inc. 5 * Copyright (C) 2004-2010 Nokia Corporation 6 * 7 * Contacts: 8 * Richard Woodruff <r-woodruff2@ti.com> 9 * Paul Walmsley 10 * 11 * Based on earlier work by Tuukka Tikkanen, Tony Lindgren, 12 * Gordon McNutt and RidgeRun, Inc. 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License version 2 as 16 * published by the Free Software Foundation. 17 */ 18#undef DEBUG 19 20#include <linux/kernel.h> 21#include <linux/errno.h> 22#include <linux/clk.h> 23#include <linux/io.h> 24 25#include <plat/clock.h> 26 27#include "clock.h" 28#include "clock2xxx.h" 29#include "cm.h" 30#include "cm-regbits-24xx.h" 31 32struct clk *vclk, *sclk, *dclk; 33 34/* 35 * Omap24xx specific clock functions 36 */ 37 38/* 39 * Set clocks for bypass mode for reboot to work. 40 */ 41void omap2xxx_clk_prepare_for_reboot(void) 42{ 43 u32 rate; 44 45 if (vclk == NULL || sclk == NULL) 46 return; 47 48 rate = clk_get_rate(sclk); 49 clk_set_rate(vclk, rate); 50} 51 52static int __init omap2xxx_clk_arch_init(void) 53{ 54 int ret; 55 56 if (!cpu_is_omap24xx()) 57 return 0; 58 59 ret = omap2_clk_switch_mpurate_at_boot("virt_prcm_set"); 60 if (!ret) 61 omap2_clk_print_new_rates("sys_ck", "dpll_ck", "mpu_ck"); 62 63 return ret; 64} 65 66arch_initcall(omap2xxx_clk_arch_init); 67