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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 11:51:39 -0800 | 
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 11:51:39 -0800 | 
| commit | d01e4afdbb65e030fd6f1f96c30a558e2eb0f279 (patch) | |
| tree | 02ef82b2740cf93a98199eded5ef765fa6e03052 /arch/arm/mach-imx/system.c | |
| parent | 8287361abca36504da813638310d2547469283eb (diff) | |
| parent | 794b175fc0c0c4844dbb7b137a73bbfd01f6c608 (diff) | |
| download | olio-linux-3.10-d01e4afdbb65e030fd6f1f96c30a558e2eb0f279.tar.xz olio-linux-3.10-d01e4afdbb65e030fd6f1f96c30a558e2eb0f279.zip  | |
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups on various subarchitectures from Olof Johansson:
 "Cleanup patches for various ARM platforms and some of their associated
  drivers.  There's also a branch in here that enables Freescale i.MX to
  be part of the multiplatform support -- the first "big" SoC that is
  moved over (more multiplatform work comes in a separate branch later
  during the merge window)."
Conflicts fixed as per Olof, including a silent semantic one in
arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to
omap3xxx_restart(), and a new user of the old name was added).
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits)
  ARM: omap: fix typo on timer cleanup
  ARM: EXYNOS: Remove unused regs-mem.h file
  ARM: EXYNOS: Remove unused non-dt support for dwmci controller
  ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan
  ARM: OMAP3: cm-t3517: use GPTIMER for system clock
  ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER
  ARM: SAMSUNG: use devm_ functions for ADC driver
  ARM: EXYNOS: no duplicate mask/unmask in eint0_15
  ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443
  ARM: EXYNOS: Remove i2c0 resource information and setting of device names
  ARM: Kirkwood: checkpatch cleanups
  ARM: Kirkwood: Fix sparse warnings.
  ARM: Kirkwood: Remove unused includes
  ARM: kirkwood: cleanup lsxl board includes
  ARM: integrator: use BUG_ON where possible
  ARM: integrator: push down SC dependencies
  ARM: integrator: delete static UART1 mapping
  ARM: integrator: delete SC mapping on the CP
  ARM: integrator: remove static CP syscon mapping
  ARM: integrator: remove static AP syscon mapping
  ...
Diffstat (limited to 'arch/arm/mach-imx/system.c')
| -rw-r--r-- | arch/arm/mach-imx/system.c | 70 | 
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c new file mode 100644 index 00000000000..695e0d73bf8 --- /dev/null +++ b/arch/arm/mach-imx/system.c @@ -0,0 +1,70 @@ +/* + * Copyright (C) 1999 ARM Limited + * Copyright (C) 2000 Deep Blue Solutions Ltd + * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/delay.h> + +#include <asm/system_misc.h> +#include <asm/proc-fns.h> +#include <asm/mach-types.h> + +#include "common.h" +#include "hardware.h" + +static void __iomem *wdog_base; + +/* + * Reset the system. It is called by machine_restart(). + */ +void mxc_restart(char mode, const char *cmd) +{ +	unsigned int wcr_enable; + +	if (cpu_is_mx1()) { +		wcr_enable = (1 << 0); +	} else { +		struct clk *clk; + +		clk = clk_get_sys("imx2-wdt.0", NULL); +		if (!IS_ERR(clk)) +			clk_prepare_enable(clk); +		wcr_enable = (1 << 2); +	} + +	/* Assert SRS signal */ +	__raw_writew(wcr_enable, wdog_base); + +	/* wait for reset to assert... */ +	mdelay(500); + +	printk(KERN_ERR "Watchdog reset failed to assert reset\n"); + +	/* delay to allow the serial port to show the message */ +	mdelay(50); + +	/* we'll take a jump through zero as a poor second */ +	soft_restart(0); +} + +void mxc_arch_reset_init(void __iomem *base) +{ +	wdog_base = base; +}  |