diff options
Diffstat (limited to 'lib/psci/psci_common.c')
| -rw-r--r-- | lib/psci/psci_common.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/lib/psci/psci_common.c b/lib/psci/psci_common.c index adce843aa..3bc03c884 100644 --- a/lib/psci/psci_common.c +++ b/lib/psci/psci_common.c @@ -948,21 +948,18 @@ void psci_do_pwrdown_sequence(unsigned int power_level) /* * With hardware-assisted coherency, the CPU drivers only initiate the * power down sequence, without performing cache-maintenance operations - * in software. Data caches and MMU remain enabled both before and after - * this call. + * in software. Data caches enabled both before and after this call. */ prepare_cpu_pwr_dwn(power_level); #else /* * Without hardware-assisted coherency, the CPU drivers disable data - * caches and MMU, then perform cache-maintenance operations in - * software. + * caches, then perform cache-maintenance operations in software. * - * We ought to call prepare_cpu_pwr_dwn() to initiate power down - * sequence. We currently have data caches and MMU enabled, but the - * function will return with data caches and MMU disabled. We must - * ensure that the stack memory is flushed out to memory before we start - * popping from it again. + * This also calls prepare_cpu_pwr_dwn() to initiate power down + * sequence, but that function will return with data caches disabled. + * We must ensure that the stack memory is flushed out to memory before + * we start popping from it again. */ psci_do_pwrdown_cache_maintenance(power_level); #endif |