From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/arm/mach-omap2/ti81xx-restart.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 arch/arm/mach-omap2/ti81xx-restart.c (limited to 'arch/arm/mach-omap2/ti81xx-restart.c') diff --git a/arch/arm/mach-omap2/ti81xx-restart.c b/arch/arm/mach-omap2/ti81xx-restart.c new file mode 100644 index 0000000000..5b5fb37caa --- /dev/null +++ b/arch/arm/mach-omap2/ti81xx-restart.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include +#include +#include + +#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) + ; +} -- cgit v1.2.3