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3a2b51993d
Current implementation of i.MX8QM power management related features does NOT optimize power number, all system resources like CCI, DDR, and A cluster etc. are kept in STBY mode (powered ON) when system suspend or CPU hotplug. To lower the power number, OFF mode should be adopted for those system resources whenever they can be OFF, A cluster will be OFF if the CPUs in the cluster are all off line, DDR/MU/DB can be OFF if system suspend, IRQ steer can be OFF if the wakeup source is belonged to system controller partition, so wakeup source runtime check is used to determine if IRQ steer can be OFF before system suspend. If resources are powered off for suspend, they should be restored properly after system resume. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
35 lines
1 KiB
C
35 lines
1 KiB
C
/*
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* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef PLAT_IMX8_H
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#define PLAT_IMX8_H
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#include <drivers/arm/gicv3.h>
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#include <lib/psci/psci.h>
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struct plat_gic_ctx {
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gicv3_redist_ctx_t rdist_ctx[PLATFORM_CORE_COUNT];
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gicv3_dist_ctx_t dist_ctx;
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};
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unsigned int plat_calc_core_pos(uint64_t mpidr);
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void imx_mailbox_init(uintptr_t base_addr);
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void plat_gic_driver_init(void);
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void plat_gic_init(void);
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void plat_gic_cpuif_enable(void);
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void plat_gic_cpuif_disable(void);
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void plat_gic_pcpu_init(void);
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void __dead2 imx_system_off(void);
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void __dead2 imx_system_reset(void);
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int imx_validate_power_state(unsigned int power_state,
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psci_power_state_t *req_state);
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void imx_get_sys_suspend_power_state(psci_power_state_t *req_state);
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bool imx_is_wakeup_src_irqsteer(void);
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void plat_gic_save(unsigned int proc_num, struct plat_gic_ctx *ctx);
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void plat_gic_restore(unsigned int proc_num, struct plat_gic_ctx *ctx);
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#endif /* PLAT_IMX8_H */
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