diff options
Diffstat (limited to 'plat/imx/imx8m/imx8mp/imx8mp_psci.c')
| -rw-r--r-- | plat/imx/imx8m/imx8mp/imx8mp_psci.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/plat/imx/imx8m/imx8mp/imx8mp_psci.c b/plat/imx/imx8m/imx8mp/imx8mp_psci.c index f541fc13..96bed88e 100644 --- a/plat/imx/imx8m/imx8mp/imx8mp_psci.c +++ b/plat/imx/imx8m/imx8mp/imx8mp_psci.c @@ -9,13 +9,59 @@ #include <arch.h> #include <arch_helpers.h> #include <common/debug.h> +#include <drivers/delay_timer.h> #include <lib/mmio.h> #include <lib/psci/psci.h> +#include <dram.h> #include <gpc.h> #include <imx8m_psci.h> #include <plat_imx8.h> +void imx_pwr_domain_off(const psci_power_state_t *target_state) +{ + uint64_t mpidr = read_mpidr_el1(); + unsigned int core_id = MPIDR_AFFLVL0_VAL(mpidr); + + plat_gic_cpuif_disable(); + imx_set_cpu_pwr_off(core_id); + + /* TODO: Find out why this is still + * needed in order not to break suspend */ + udelay(50); +} + +void imx_domain_suspend_finish(const psci_power_state_t *target_state) +{ + uint64_t mpidr = read_mpidr_el1(); + unsigned int core_id = MPIDR_AFFLVL0_VAL(mpidr); + + if (is_local_state_off(SYSTEM_PWR_STATE(target_state))) { + if (!imx_m4_lpa_active()) { + imx_noc_wrapper_post_resume(core_id); + imx_anamix_override(false); + dram_exit_retention(); + imx_set_sys_lpm(core_id, false); + } + imx_set_sys_wakeup(core_id, false); + } + + if (!is_local_state_run(CLUSTER_PWR_STATE(target_state))) { + imx_clear_rbc_count(); + imx_set_cluster_powerdown(core_id, PSCI_LOCAL_STATE_RUN); + } + + if (is_local_state_off(CORE_PWR_STATE(target_state))) { + /* mark this core as awake by masking IRQ0 */ + imx_gpc_set_a53_core_awake(core_id); + imx_set_cpu_lpm(core_id, false); + plat_gic_cpuif_enable(); + } else { + write_scr_el3(read_scr_el3() & (~SCR_FIQ_BIT)); + isb(); + } +} + static const plat_psci_ops_t imx_plat_psci_ops = { .pwr_domain_on = imx_pwr_domain_on, .pwr_domain_on_finish = imx_pwr_domain_on_finish, |