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Tegra186: calculate proper power state for cluster/system power down 

Earlier, we were setting "System Suspend" as the power state for all system
states. This caused incorrect system state during a cluster power down.

This patch fixes this anomaly and sets the correct power state during a
cluster/system power down.

Change-Id: Ibd002930e0ae103e381e0a19670c3c4d057e7cb7
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2017-04-06 17:33:31 -07:00
parent ab3a33fe5c
commit e9cb01d96e
1 changed files with 7 additions and 3 deletions
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10
plat/nvidia/tegra/soc/t186/plat_psci_handlers.c
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@ -188,8 +188,11 @@ plat_local_state_t tegra_soc_get_target_pwr_state(unsigned int lvl,
int core_pos = read_mpidr() & MPIDR_CPU_MASK;
mce_cstate_info_t cstate_info = { 0 };
/* get the current core's power state */
target = *(states + core_pos);
/* get the power state at this level */
if (lvl == MPIDR_AFFLVL1)
target = *(states + core_pos);
if (lvl == MPIDR_AFFLVL2)
target = *(states + cpu);
/* CPU suspend */
if (lvl == MPIDR_AFFLVL1 && target == PSTATE_ID_CORE_POWERDN) {
@ -242,7 +245,8 @@ plat_local_state_t tegra_soc_get_target_pwr_state(unsigned int lvl,
}
/* System Suspend */
if ((lvl == MPIDR_AFFLVL2) || (target == PSTATE_ID_SOC_POWERDN))
if (((lvl == MPIDR_AFFLVL2) || (lvl == MPIDR_AFFLVL1)) &&
(target == PSTATE_ID_SOC_POWERDN))
return PSTATE_ID_SOC_POWERDN;
/* default state */