diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sbi/sbi_hsm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/sbi/sbi_hsm.c b/lib/sbi/sbi_hsm.c index dfe8408d..e8128a39 100644 --- a/lib/sbi/sbi_hsm.c +++ b/lib/sbi/sbi_hsm.c @@ -37,6 +37,8 @@ static const struct sbi_hsm_device *hsm_dev = NULL; static unsigned long hart_data_offset; +static bool hsm_device_has_hart_hotplug(void); +static int hsm_device_hart_stop(void); /** Per hart specific data to manage state transition **/ struct sbi_hsm_data { @@ -170,6 +172,13 @@ static void sbi_hsm_hart_wait(struct sbi_scratch *scratch) /* Wait for state transition requested by sbi_hsm_hart_start() */ while (atomic_read(&hdata->state) != SBI_HSM_STATE_START_PENDING) { + /* + * If the hsm_dev is ready and it support the hotplug, we can + * use the hsm stop for more power saving + */ + if (hsm_device_has_hart_hotplug()) + hsm_device_hart_stop(); + wfi(); } |