imx8-power-domain.c 1.9 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * Copyright 2019 NXP
  4. */
  5. #define DEBUG
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <power-domain-uclass.h>
  9. #include <asm/arch/power-domain.h>
  10. #include <asm/arch/sci/sci.h>
  11. static int imx8_power_domain_request(struct power_domain *power_domain)
  12. {
  13. debug("%s(power_domain=%p)\n", __func__, power_domain);
  14. return 0;
  15. }
  16. static int imx8_power_domain_free(struct power_domain *power_domain)
  17. {
  18. debug("%s(power_domain=%p)\n", __func__, power_domain);
  19. return 0;
  20. }
  21. static int imx8_power_domain_on(struct power_domain *power_domain)
  22. {
  23. u32 resource_id = power_domain->id;
  24. int ret;
  25. debug("%s: resource_id %u\n", __func__, resource_id);
  26. ret = sc_pm_set_resource_power_mode(-1, resource_id, SC_PM_PW_MODE_ON);
  27. if (ret) {
  28. printf("Error: %u Power up failed! (error = %d)\n",
  29. resource_id, ret);
  30. return ret;
  31. }
  32. return 0;
  33. }
  34. static int imx8_power_domain_off(struct power_domain *power_domain)
  35. {
  36. u32 resource_id = power_domain->id;
  37. int ret;
  38. debug("%s: resource_id %u\n", __func__, resource_id);
  39. ret = sc_pm_set_resource_power_mode(-1, resource_id, SC_PM_PW_MODE_OFF);
  40. if (ret) {
  41. printf("Error: %u Power off failed! (error = %d)\n",
  42. resource_id, ret);
  43. return ret;
  44. }
  45. return 0;
  46. }
  47. static int imx8_power_domain_probe(struct udevice *dev)
  48. {
  49. debug("%s(dev=%s)\n", __func__, dev->name);
  50. return 0;
  51. }
  52. static const struct udevice_id imx8_power_domain_ids[] = {
  53. { .compatible = "fsl,imx8qxp-scu-pd" },
  54. { .compatible = "fsl,scu-pd" },
  55. { }
  56. };
  57. struct power_domain_ops imx8_power_domain_ops_v2 = {
  58. .request = imx8_power_domain_request,
  59. .rfree = imx8_power_domain_free,
  60. .on = imx8_power_domain_on,
  61. .off = imx8_power_domain_off,
  62. };
  63. U_BOOT_DRIVER(imx8_power_domain_v2) = {
  64. .name = "imx8_power_domain_v2",
  65. .id = UCLASS_POWER_DOMAIN,
  66. .of_match = imx8_power_domain_ids,
  67. .probe = imx8_power_domain_probe,
  68. .ops = &imx8_power_domain_ops_v2,
  69. };