andrius
/
arm-trusted-firmware
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ti: k3: common: Add basic PSCI core off support 

Use TI-SCI messages to request core power down from system controller
firmware.

Signed-off-by: Andrew F. Davis <afd@ti.com>
This commit is contained in:
Andrew F. Davis 2018-08-09 10:01:53 -05:00
parent 776ba05a47
commit 34cae37f58
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
plat/ti/k3/common/k3_psci.c
View File

@ -76,10 +76,19 @@ static int k3_pwr_domain_on(u_register_t mpidr)
void k3_pwr_domain_off(const psci_power_state_t *target_state)
{
int core_id, device, ret;
/* Prevent interrupts from spuriously waking up this cpu */
k3_gic_cpuif_disable();
/* TODO: Indicate to System firmware about powering down */
core_id = plat_my_core_pos();
device = PLAT_PROC_DEVICE_START_ID + core_id;
ret = ti_sci_device_put(device);
if (ret) {
ERROR("Request to stop core failed: %d\n", ret);
return;
}
}
void k3_pwr_domain_on_finish(const psci_power_state_t *target_state)