[PATCH RFC v5 2/2] pmdomain: arm_scmi: add support for domain hierarchies
From: "Kevin Hilman (TI)" <khilman@baylibre.com>
Date: 2026-01-23 01:14:13
Also in:
arm-scmi, linux-devicetree, linux-pm, lkml
Subsystem:
generic pm domains, system control & power/management interface (scpi/scmi) message protocol drivers, the rest · Maintainers:
Ulf Hansson, Sudeep Holla, Linus Torvalds
After primary SCMI pmdomain is created, use new of_genpd helper to check if there are any child domain mappings defined by power-domain-map, and create domain hierarchy. Also remove any child domain mappings when SCMI domain is removed. Signed-off-by: Kevin Hilman (TI) <khilman@baylibre.com> --- drivers/pmdomain/arm/scmi_pm_domain.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/pmdomain/arm/scmi_pm_domain.c b/drivers/pmdomain/arm/scmi_pm_domain.c
index b5e2ffd5ea64..a52387c45d88 100644
--- a/drivers/pmdomain/arm/scmi_pm_domain.c
+++ b/drivers/pmdomain/arm/scmi_pm_domain.c@@ -114,8 +114,12 @@ static int scmi_pm_domain_probe(struct scmi_device *sdev) dev_set_drvdata(dev, scmi_pd_data); + /* check for (optional) subdomain mapping with power-domain-map */ + of_genpd_add_subdomain_map(np, scmi_pd_data); + return 0; err_rm_genpds: + of_genpd_remove_subdomain_map(np, scmi_pd_data); for (i = num_domains - 1; i >= 0; i--) pm_genpd_remove(domains[i]);
@@ -132,6 +136,7 @@ static void scmi_pm_domain_remove(struct scmi_device *sdev) of_genpd_del_provider(np); scmi_pd_data = dev_get_drvdata(dev); + of_genpd_remove_subdomain_map(np, scmi_pd_data); for (i = 0; i < scmi_pd_data->num_domains; i++) { if (!scmi_pd_data->domains[i]) continue;
--
2.51.0