Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2024-12-28 00:32:00 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

cpuidle: psci: Activate GENPD_FLAG_ACTIVE_WAKEUP with OSI

Browse Source 
Set GENPD_FLAG_ACTIVE_WAKEUP flag for domain psci cpuidle when OSI
is activated, then when a device is set as the wake-up source using
device_set_wakeup_path, the PSCI power domain could be retained to allow
so that the associated device can wake up the system.

With this flag, for S2IDLE system-wide suspend, the wake-up path is
managed in each device driver and is tested in the power framework:
a PSCI domain is only turned off when GENPD_FLAG_ACTIVE_WAKEUP is enabled
and the associated device is not in the wake-up path, so PSCI CPUIdle
selects the lowest level in the PSCI topology according to the wake-up
path.

This patch is a preliminary step to support PSCI OSI on the STM32MP25
platform with the D1 domain (power-domain-cluster) for the A35 cortex
cluster and for the associated peripherals including EXTI1 which manages
the wake-up interrupts for domain D1.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Message-ID: <20241119141827.1.I6129b16ec6b558efc1707861db87e55bf7022f62@changeid>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Patrick Delaunay 2024-11-19 14:18:34 +01:00 committed by Ulf Hansson
parent fac04efc5c
commit bfd5859709
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/cpuidle/cpuidle-psci-domain.c
View File

@ -72,6 +72,7 @@ static int psci_pd_init(struct device_node *np, bool use_osi)
*/
if (use_osi) {
pd->power_off = psci_pd_power_off;
pd->flags |= GENPD_FLAG_ACTIVE_WAKEUP;
if (IS_ENABLED(CONFIG_PREEMPT_RT))
pd->flags |= GENPD_FLAG_RPM_ALWAYS_ON;
} else {