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bc7235c97f
We are missing proper hooks for 81xx for reboot to work. Cc: Brian Hutchinson <b.hutchman@gmail.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
35 lines
1001 B
C
35 lines
1001 B
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/reboot.h>
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#include "iomap.h"
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#include "common.h"
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#include "control.h"
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#include "prm3xxx.h"
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#define TI81XX_PRM_DEVICE_RSTCTRL 0x00a0
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#define TI81XX_GLOBAL_RST_COLD BIT(1)
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/**
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* ti81xx_restart - trigger a software restart of the SoC
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* @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
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* @cmd: passed from the userspace program rebooting the system (if provided)
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*
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* Resets the SoC. For @cmd, see the 'reboot' syscall in
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* kernel/sys.c. No return value.
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*
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* NOTE: Warm reset does not seem to work, may require resetting
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* clocks to bypass mode.
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*/
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void ti81xx_restart(enum reboot_mode mode, const char *cmd)
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{
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omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0,
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TI81XX_PRM_DEVICE_RSTCTRL);
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while (1);
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}
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