File: ti81xx-restart.c

package info (click to toggle)
linux 6.16.8-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 1,724,600 kB
  • sloc: ansic: 26,562,026; asm: 271,344; sh: 144,033; python: 72,469; makefile: 57,130; perl: 36,821; xml: 19,553; cpp: 5,820; yacc: 4,915; lex: 2,955; awk: 1,667; sed: 28; ruby: 25
file content (31 lines) | stat: -rw-r--r-- 851 bytes parent folder | download | duplicates (18)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/reboot.h>

#include "iomap.h"
#include "common.h"
#include "control.h"
#include "prm3xxx.h"

#define TI81XX_PRM_DEVICE_RSTCTRL	0x00a0
#define TI81XX_GLOBAL_RST_COLD		BIT(1)

/**
 * ti81xx_restart - trigger a software restart of the SoC
 * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
 * @cmd: passed from the userspace program rebooting the system (if provided)
 *
 * Resets the SoC.  For @cmd, see the 'reboot' syscall in
 * kernel/sys.c.  No return value.
 *
 * NOTE: Warm reset does not seem to work, may require resetting
 * clocks to bypass mode.
 */
void ti81xx_restart(enum reboot_mode mode, const char *cmd)
{
	omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0,
				   TI81XX_PRM_DEVICE_RSTCTRL);
	while (1)
		;
}