drivers/power/domain/imx8-power-domain.c

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