projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 046d6b28 | 1 | /* |
| da4d2904 | 2 | * clock2xxx.c - OMAP2xxx-specific clock integration code |
| 046d6b28 | 3 | * |
| da4d2904 PW |
4 | * Copyright (C) 2005-2008 Texas Instruments, Inc. |
| 5 | * Copyright (C) 2004-2010 Nokia Corporation | |
| 046d6b28 | 6 | * |
| da4d2904 PW |
7 | * Contacts: |
| 8 | * Richard Woodruff <r-woodruff2@ti.com> | |
| 9 | * Paul Walmsley | |
| 046d6b28 | 10 | * |
| da4d2904 PW |
11 | * Based on earlier work by Tuukka Tikkanen, Tony Lindgren, |
| 12 | * Gordon McNutt and RidgeRun, Inc. | |
| 046d6b28 TL |
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 | */ | |
| 6b8858a9 PW |
18 | #undef DEBUG |
| 19 | ||
| 046d6b28 | 20 | #include <linux/kernel.h> |
| 046d6b28 | 21 | #include <linux/errno.h> |
| f8ce2547 | 22 | #include <linux/clk.h> |
| 6b8858a9 | 23 | #include <linux/io.h> |
| 046d6b28 | 24 | |
| ce491cf8 | 25 | #include <plat/clock.h> |
| 046d6b28 | 26 | |
| 6b8858a9 | 27 | #include "clock.h" |
| d8a94458 | 28 | #include "clock2xxx.h" |
| 6b8858a9 PW |
29 | #include "cm.h" |
| 30 | #include "cm-regbits-24xx.h" | |
| 046d6b28 | 31 | |
| d8a94458 | 32 | struct clk *vclk, *sclk, *dclk; |
| 046d6b28 | 33 | |
| da4d2904 | 34 | /* |
| 6b8858a9 | 35 | * Omap24xx specific clock functions |
| da4d2904 | 36 | */ |
| 046d6b28 | 37 | |
| ae78dcf7 TL |
38 | /* |
| 39 | * Set clocks for bypass mode for reboot to work. | |
| 40 | */ | |
| feec1277 | 41 | void omap2xxx_clk_prepare_for_reboot(void) |
| ae78dcf7 TL |
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 | ||
| 046d6b28 | 52 | /* |
| 4d30e82c PW |
53 | * Switch the MPU rate if specified on cmdline. We cannot do this |
| 54 | * early until cmdline is parsed. XXX This should be removed from the | |
| 55 | * clock code and handled by the OPP layer code in the near future. | |
| 046d6b28 | 56 | */ |
| 4680c29f | 57 | static int __init omap2xxx_clk_arch_init(void) |
| 046d6b28 | 58 | { |
| 4d30e82c | 59 | int ret; |
| d8a94458 | 60 | |
| 4680c29f PW |
61 | if (!cpu_is_omap24xx()) |
| 62 | return 0; | |
| 63 | ||
| 4d30e82c PW |
64 | ret = omap2_clk_switch_mpurate_at_boot("virt_prcm_set"); |
| 65 | if (!ret) | |
| 66 | omap2_clk_print_new_rates("sys_ck", "dpll_ck", "mpu_ck"); | |
| 046d6b28 | 67 | |
| 4d30e82c | 68 | return ret; |
| 046d6b28 | 69 | } |
| 4d30e82c | 70 | |
| 4680c29f | 71 | arch_initcall(omap2xxx_clk_arch_init); |
| 046d6b28 | 72 | |
| 046d6b28 | 73 |