drivers/sysreset/sysreset_xtfpga.c

   1 /*
   2  * Cadence Tensilica xtfpga system reset driver.
   3  *
   4  * (C) Copyright 2016 Cadence Design Systems Inc.
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <errno.h>
  12 #include <sysreset.h>
  13 #include <asm/io.h>
  14
  15 static int xtfpga_reset_request(struct udevice *dev, enum sysreset_t type)
  16 {
  17         switch (type) {
  18         case SYSRESET_COLD:
  19                 writel(CONFIG_SYS_FPGAREG_RESET_CODE,
  20                        CONFIG_SYS_FPGAREG_RESET);
  21                 break;
  22         default:
  23                 return -EPROTONOSUPPORT;
  24         }
  25
  26         return -EINPROGRESS;
  27 }
  28
  29 static struct sysreset_ops xtfpga_sysreset_ops = {
  30         .request        = xtfpga_reset_request,
  31 };
  32
  33 U_BOOT_DRIVER(xtfpga_sysreset) = {
  34         .name   = "xtfpga_sysreset",
  35         .id     = UCLASS_SYSRESET,
  36         .ops    = &xtfpga_sysreset_ops,
  37 };