arch/arm/cpu/armv7/stv0991/reset.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2014, STMicroelectronics - All Rights Reserved
   4  * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
   5  */
   6
   7 #include <common.h>
   8 #include <cpu_func.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/stv0991_wdru.h>
  11 #include <linux/delay.h>
  12 void reset_cpu(void)
  13 {
  14         puts("System is going to reboot ...\n");
  15         /*
  16          * This 1 second delay will allow the above message
  17          * to be printed before reset
  18          */
  19         udelay((1000 * 1000));
  20
  21         /* Setting bit 1 of the WDRU unit will reset the SoC */
  22         writel(WDRU_RST_SYS, &stv0991_wd_ru_ptr->wdru_ctrl1);
  23
  24         /* system will restart */
  25         while (1)
  26                 ;
  27 }