1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2016, NVIDIA CORPORATION.
9 #include <power-domain-uclass.h>
10 #include <asm/arch-tegra/bpmp_abi.h>
15 static int tegra186_power_domain_request(struct power_domain *power_domain)
17 debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
18 power_domain, power_domain->dev, power_domain->id);
23 static int tegra186_power_domain_free(struct power_domain *power_domain)
25 debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
26 power_domain, power_domain->dev, power_domain->id);
31 static int tegra186_power_domain_common(struct power_domain *power_domain,
34 struct mrq_pg_update_state_request req;
35 int on_state = on ? ON : 0;
38 req.partition_id = power_domain->id;
39 req.logic_state = UPDATE | on_state;
40 req.sram_state = UPDATE | on_state;
42 * Drivers manage their own clocks so they don't get out of sync, and
43 * since some power domains have many clocks, only a subset of which
44 * are actually needed depending on use-case.
46 req.clock_state = UPDATE;
48 ret = misc_call(power_domain->dev->parent, MRQ_PG_UPDATE_STATE, &req,
49 sizeof(req), NULL, 0);
56 static int tegra186_power_domain_on(struct power_domain *power_domain)
58 debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
59 power_domain, power_domain->dev, power_domain->id);
61 return tegra186_power_domain_common(power_domain, true);
64 static int tegra186_power_domain_off(struct power_domain *power_domain)
66 debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
67 power_domain, power_domain->dev, power_domain->id);
69 return tegra186_power_domain_common(power_domain, false);
72 struct power_domain_ops tegra186_power_domain_ops = {
73 .request = tegra186_power_domain_request,
74 .rfree = tegra186_power_domain_free,
75 .on = tegra186_power_domain_on,
76 .off = tegra186_power_domain_off,
79 static int tegra186_power_domain_probe(struct udevice *dev)
81 debug("%s(dev=%p)\n", __func__, dev);
86 U_BOOT_DRIVER(tegra186_power_domain) = {
87 .name = "tegra186_power_domain",
88 .id = UCLASS_POWER_DOMAIN,
89 .probe = tegra186_power_domain_probe,
90 .ops = &tegra186_power_domain_ops,