diff options
author | Tony Lindgren <tony@atomide.com> | 2006-04-02 16:46:20 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-04-02 16:46:20 (GMT) |
commit | b824efae120b656fef562b2e81e1ed6aa88f8d24 (patch) | |
tree | 427d55c6e13fe3b19d2387769145c01933c630d0 /arch/arm/mach-omap2/prcm.c | |
parent | 3267c077e589bc146a0b45e220fcefafbf83fb80 (diff) | |
download | linux-fsl-qoriq-b824efae120b656fef562b2e81e1ed6aa88f8d24.tar.xz |
[ARM] 3426/1: ARM: OMAP: 1/8 Update clock framework
Patch from Tony Lindgren
Update OMAP clock framework from linux-omap tree.
The highlights of the patch are:
- Add support for omap730 clocks by Andrzej Zaborowski
- Fix compile warnings by Dirk Behme
- Add support for using dev id by Tony Lindgren and Komal Shah
- Move memory timings and PRCM into separate files by Tony Lindgren
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-omap2/prcm.c')
-rw-r--r-- | arch/arm/mach-omap2/prcm.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c new file mode 100644 index 0000000..8893479 --- /dev/null +++ b/arch/arm/mach-omap2/prcm.c @@ -0,0 +1,40 @@ +/* + * linux/arch/arm/mach-omap2/prcm.c + * + * OMAP 24xx Power Reset and Clock Management (PRCM) functions + * + * Copyright (C) 2005 Nokia Corporation + * + * Written by Tony Lindgren <tony.lindgren@nokia.com> + * + * Some pieces of code Copyright (C) 2005 Texas Instruments, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/clk.h> + +#include "prcm-regs.h" + +u32 omap_prcm_get_reset_sources(void) +{ + return RM_RSTST_WKUP & 0x7f; +} +EXPORT_SYMBOL(omap_prcm_get_reset_sources); + +/* Resets clock rates and reboots the system. Only called from system.h */ +void omap_prcm_arch_reset(char mode) +{ + u32 rate; + struct clk *vclk, *sclk; + + vclk = clk_get(NULL, "virt_prcm_set"); + sclk = clk_get(NULL, "sys_ck"); + rate = clk_get_rate(sclk); + clk_set_rate(vclk, rate); /* go to bypass for OMAP limitation */ + RM_RSTCTRL_WKUP |= 2; +} |