1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright 2019 NXP
4 */
5
6 #define DEBUG
7 #include <common.h>
8 #include <dm.h>
9 #include <log.h>
10 #include <malloc.h>
11 #include <power-domain-uclass.h>
12 #include <asm/arch/power-domain.h>
13 #include <asm/arch/sci/sci.h>
14
imx8_power_domain_request(struct power_domain * power_domain)15 static int imx8_power_domain_request(struct power_domain *power_domain)
16 {
17 debug("%s(power_domain=%p)\n", __func__, power_domain);
18
19 return 0;
20 }
21
imx8_power_domain_free(struct power_domain * power_domain)22 static int imx8_power_domain_free(struct power_domain *power_domain)
23 {
24 debug("%s(power_domain=%p)\n", __func__, power_domain);
25
26 return 0;
27 }
28
imx8_power_domain_on(struct power_domain * power_domain)29 static int imx8_power_domain_on(struct power_domain *power_domain)
30 {
31 u32 resource_id = power_domain->id;
32 int ret;
33
34 debug("%s: resource_id %u\n", __func__, resource_id);
35
36 ret = sc_pm_set_resource_power_mode(-1, resource_id, SC_PM_PW_MODE_ON);
37 if (ret) {
38 printf("Error: %u Power up failed! (error = %d)\n",
39 resource_id, ret);
40 return ret;
41 }
42
43 return 0;
44 }
45
imx8_power_domain_off(struct power_domain * power_domain)46 static int imx8_power_domain_off(struct power_domain *power_domain)
47 {
48 u32 resource_id = power_domain->id;
49 int ret;
50
51 debug("%s: resource_id %u\n", __func__, resource_id);
52
53 ret = sc_pm_set_resource_power_mode(-1, resource_id, SC_PM_PW_MODE_OFF);
54 if (ret) {
55 printf("Error: %u Power off failed! (error = %d)\n",
56 resource_id, ret);
57 return ret;
58 }
59
60 return 0;
61 }
62
imx8_power_domain_probe(struct udevice * dev)63 static int imx8_power_domain_probe(struct udevice *dev)
64 {
65 debug("%s(dev=%s)\n", __func__, dev->name);
66
67 return 0;
68 }
69
70 static const struct udevice_id imx8_power_domain_ids[] = {
71 { .compatible = "fsl,imx8qxp-scu-pd" },
72 { .compatible = "fsl,scu-pd" },
73 { }
74 };
75
76 struct power_domain_ops imx8_power_domain_ops_v2 = {
77 .request = imx8_power_domain_request,
78 .rfree = imx8_power_domain_free,
79 .on = imx8_power_domain_on,
80 .off = imx8_power_domain_off,
81 };
82
83 U_BOOT_DRIVER(imx8_power_domain_v2) = {
84 .name = "imx8_power_domain_v2",
85 .id = UCLASS_POWER_DOMAIN,
86 .of_match = imx8_power_domain_ids,
87 .probe = imx8_power_domain_probe,
88 .ops = &imx8_power_domain_ops_v2,
89 };
90