| Tony Lindgren | b824efa | 2006-04-02 17:46:20 +0100 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-omap2/prcm.c |
| 3 | * |
| 4 | * OMAP 24xx Power Reset and Clock Management (PRCM) functions |
| 5 | * |
| 6 | * Copyright (C) 2005 Nokia Corporation |
| 7 | * |
| 8 | * Written by Tony Lindgren <tony.lindgren@nokia.com> |
| 9 | * |
| 10 | * Some pieces of code Copyright (C) 2005 Texas Instruments, Inc. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License version 2 as |
| 14 | * published by the Free Software Foundation. |
| 15 | */ |
| 16 | #include <linux/config.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/clk.h> |
| 20 | |
| 21 | #include "prcm-regs.h" |
| 22 | |
| 23 | u32 omap_prcm_get_reset_sources(void) |
| 24 | { |
| 25 | return RM_RSTST_WKUP & 0x7f; |
| 26 | } |
| 27 | EXPORT_SYMBOL(omap_prcm_get_reset_sources); |
| 28 | |
| 29 | /* Resets clock rates and reboots the system. Only called from system.h */ |
| 30 | void omap_prcm_arch_reset(char mode) |
| 31 | { |
| 32 | u32 rate; |
| 33 | struct clk *vclk, *sclk; |
| 34 | |
| 35 | vclk = clk_get(NULL, "virt_prcm_set"); |
| 36 | sclk = clk_get(NULL, "sys_ck"); |
| 37 | rate = clk_get_rate(sclk); |
| 38 | clk_set_rate(vclk, rate); /* go to bypass for OMAP limitation */ |
| 39 | RM_RSTCTRL_WKUP |= 2; |
| 40 | } |