1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0
224cdf1a9SStephen Warren /*
324cdf1a9SStephen Warren * Copyright (c) 2016, NVIDIA CORPORATION.
424cdf1a9SStephen Warren */
524cdf1a9SStephen Warren
624cdf1a9SStephen Warren #include <common.h>
724cdf1a9SStephen Warren #include <dm.h>
824cdf1a9SStephen Warren #include <misc.h>
924cdf1a9SStephen Warren #include <power-domain-uclass.h>
1024cdf1a9SStephen Warren #include <asm/arch-tegra/bpmp_abi.h>
1124cdf1a9SStephen Warren
1224cdf1a9SStephen Warren #define UPDATE BIT(0)
1324cdf1a9SStephen Warren #define ON BIT(1)
1424cdf1a9SStephen Warren
tegra186_power_domain_request(struct power_domain * power_domain)1524cdf1a9SStephen Warren static int tegra186_power_domain_request(struct power_domain *power_domain)
1624cdf1a9SStephen Warren {
1724cdf1a9SStephen Warren debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
1824cdf1a9SStephen Warren power_domain, power_domain->dev, power_domain->id);
1924cdf1a9SStephen Warren
2024cdf1a9SStephen Warren return 0;
2124cdf1a9SStephen Warren }
2224cdf1a9SStephen Warren
tegra186_power_domain_free(struct power_domain * power_domain)2324cdf1a9SStephen Warren static int tegra186_power_domain_free(struct power_domain *power_domain)
2424cdf1a9SStephen Warren {
2524cdf1a9SStephen Warren debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
2624cdf1a9SStephen Warren power_domain, power_domain->dev, power_domain->id);
2724cdf1a9SStephen Warren
2824cdf1a9SStephen Warren return 0;
2924cdf1a9SStephen Warren }
3024cdf1a9SStephen Warren
tegra186_power_domain_common(struct power_domain * power_domain,bool on)3124cdf1a9SStephen Warren static int tegra186_power_domain_common(struct power_domain *power_domain,
3224cdf1a9SStephen Warren bool on)
3324cdf1a9SStephen Warren {
3424cdf1a9SStephen Warren struct mrq_pg_update_state_request req;
3524cdf1a9SStephen Warren int on_state = on ? ON : 0;
3624cdf1a9SStephen Warren int ret;
3724cdf1a9SStephen Warren
3824cdf1a9SStephen Warren req.partition_id = power_domain->id;
3924cdf1a9SStephen Warren req.logic_state = UPDATE | on_state;
4024cdf1a9SStephen Warren req.sram_state = UPDATE | on_state;
4124cdf1a9SStephen Warren /*
4224cdf1a9SStephen Warren * Drivers manage their own clocks so they don't get out of sync, and
4324cdf1a9SStephen Warren * since some power domains have many clocks, only a subset of which
4424cdf1a9SStephen Warren * are actually needed depending on use-case.
4524cdf1a9SStephen Warren */
4624cdf1a9SStephen Warren req.clock_state = UPDATE;
4724cdf1a9SStephen Warren
4824cdf1a9SStephen Warren ret = misc_call(power_domain->dev->parent, MRQ_PG_UPDATE_STATE, &req,
4924cdf1a9SStephen Warren sizeof(req), NULL, 0);
5024cdf1a9SStephen Warren if (ret < 0)
5124cdf1a9SStephen Warren return ret;
5224cdf1a9SStephen Warren
5324cdf1a9SStephen Warren return 0;
5424cdf1a9SStephen Warren }
5524cdf1a9SStephen Warren
tegra186_power_domain_on(struct power_domain * power_domain)5624cdf1a9SStephen Warren static int tegra186_power_domain_on(struct power_domain *power_domain)
5724cdf1a9SStephen Warren {
5824cdf1a9SStephen Warren debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
5924cdf1a9SStephen Warren power_domain, power_domain->dev, power_domain->id);
6024cdf1a9SStephen Warren
6124cdf1a9SStephen Warren return tegra186_power_domain_common(power_domain, true);
6224cdf1a9SStephen Warren }
6324cdf1a9SStephen Warren
tegra186_power_domain_off(struct power_domain * power_domain)6424cdf1a9SStephen Warren static int tegra186_power_domain_off(struct power_domain *power_domain)
6524cdf1a9SStephen Warren {
6624cdf1a9SStephen Warren debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
6724cdf1a9SStephen Warren power_domain, power_domain->dev, power_domain->id);
6824cdf1a9SStephen Warren
6924cdf1a9SStephen Warren return tegra186_power_domain_common(power_domain, false);
7024cdf1a9SStephen Warren }
7124cdf1a9SStephen Warren
7224cdf1a9SStephen Warren struct power_domain_ops tegra186_power_domain_ops = {
7324cdf1a9SStephen Warren .request = tegra186_power_domain_request,
7424cdf1a9SStephen Warren .free = tegra186_power_domain_free,
7524cdf1a9SStephen Warren .on = tegra186_power_domain_on,
7624cdf1a9SStephen Warren .off = tegra186_power_domain_off,
7724cdf1a9SStephen Warren };
7824cdf1a9SStephen Warren
tegra186_power_domain_probe(struct udevice * dev)7924cdf1a9SStephen Warren static int tegra186_power_domain_probe(struct udevice *dev)
8024cdf1a9SStephen Warren {
8124cdf1a9SStephen Warren debug("%s(dev=%p)\n", __func__, dev);
8224cdf1a9SStephen Warren
8324cdf1a9SStephen Warren return 0;
8424cdf1a9SStephen Warren }
8524cdf1a9SStephen Warren
8624cdf1a9SStephen Warren U_BOOT_DRIVER(tegra186_power_domain) = {
8724cdf1a9SStephen Warren .name = "tegra186_power_domain",
8824cdf1a9SStephen Warren .id = UCLASS_POWER_DOMAIN,
8924cdf1a9SStephen Warren .probe = tegra186_power_domain_probe,
9024cdf1a9SStephen Warren .ops = &tegra186_power_domain_ops,
9124cdf1a9SStephen Warren };
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