superrob1500
/
mirror-linux
mirror of https://github.com/torvalds/linux
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

cpuidle: psci: Opt-out from genpd's common ->sync_state() support 

The cpuidle-psci-domain implements its own specific ->sync_state()
callback. Let's set the GENPD_FLAG_NO_SYNC_STATE to inform genpd about it.

Moreover, let's call of_genpd_sync_state() to make sure genpd tries to
power off unused PM domains.

Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X
Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20250701114733.636510-11-ulf.hansson@linaro.org
pull/1309/head
Ulf Hansson 2025-07-01 13:47:12 +02:00
parent 8efc9b195b
commit 7cfa380de7
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/cpuidle/cpuidle-psci-domain.c
View File

@ -63,7 +63,8 @@ static int psci_pd_init(struct device_node *np, bool use_osi)
if (!pd_provider)
goto free_pd;
pd->flags |= GENPD_FLAG_IRQ_SAFE | GENPD_FLAG_CPU_DOMAIN;
pd->flags |= GENPD_FLAG_IRQ_SAFE | GENPD_FLAG_CPU_DOMAIN |
GENPD_FLAG_NO_SYNC_STATE;
/*
* Allow power off when OSI has been successfully enabled.
@ -128,11 +129,16 @@ static void psci_pd_remove(void)
static void psci_cpuidle_domain_sync_state(struct device *dev)
{
struct psci_pd_provider *pd_provider;
/*
* All devices have now been attached/probed to the PM domain topology,
* hence it's fine to allow domain states to be picked.
*/
psci_pd_allow_domain_state = true;
list_for_each_entry(pd_provider, &psci_pd_providers, link)
of_genpd_sync_state(pd_provider->node);
}
static const struct of_device_id psci_of_match[] = {