sysreset_octeon.c 1.0 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * Copyright (C) 2020 Stefan Roese <sr@denx.de>
  4. */
  5. #include <common.h>
  6. #include <dm.h>
  7. #include <errno.h>
  8. #include <sysreset.h>
  9. #include <asm/io.h>
  10. #define RST_SOFT_RST 0x0080
  11. struct octeon_sysreset_data {
  12. void __iomem *base;
  13. };
  14. static int octeon_sysreset_request(struct udevice *dev, enum sysreset_t type)
  15. {
  16. struct octeon_sysreset_data *data = dev_get_priv(dev);
  17. writeq(1, data->base + RST_SOFT_RST);
  18. return -EINPROGRESS;
  19. }
  20. static int octeon_sysreset_probe(struct udevice *dev)
  21. {
  22. struct octeon_sysreset_data *data = dev_get_priv(dev);
  23. data->base = dev_remap_addr(dev);
  24. return 0;
  25. }
  26. static struct sysreset_ops octeon_sysreset = {
  27. .request = octeon_sysreset_request,
  28. };
  29. static const struct udevice_id octeon_sysreset_ids[] = {
  30. { .compatible = "mrvl,cn7xxx-rst" },
  31. { }
  32. };
  33. U_BOOT_DRIVER(sysreset_octeon) = {
  34. .id = UCLASS_SYSRESET,
  35. .name = "octeon_sysreset",
  36. .priv_auto = sizeof(struct octeon_sysreset_data),
  37. .ops = &octeon_sysreset,
  38. .probe = octeon_sysreset_probe,
  39. .of_match = octeon_sysreset_ids,
  40. };