Hi Dan,

Dan Carpenter [off-list ref] writes:

On Wed, Jun 18, 2025 at 10:48:09AM -0700, Kevin Hilman wrote:

quoted

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 88819659df83..3ede4baa4bee 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c

@@ -3220,6 +3220,40 @@ int of_genpd_parse_idle_states(struct device_node *dn,
 }
 EXPORT_SYMBOL_GPL(of_genpd_parse_idle_states);
 
+int of_genpd_add_subdomain_map(struct device_node *np,
+			       struct generic_pm_domain *domain,
+			       int index)
+{
+	struct of_phandle_args parent_args;
+	struct generic_pm_domain *parent_pd;
+	struct device *dev = &domain->dev;
+	int ret;
+
+	if (!domain)
+		return -ENODEV;
+
+	/*
+	 * Check for power-domain-map, which implies the primary
+	 * power-doamin is a subdomain of the parent found in the map.
+	 */
+	ret = of_parse_phandle_with_args_map(np, NULL, "power-domain",
+					     index, &parent_args);
+	if (!ret && parent_args.np) {

Sorry for the pedanticry but could we flip this around?

Sure.  This is early prototype code for discsussing the big-picture
approach, but I appreciate the review.  I'll clean that up when I get
past the RFC phase.

Thanks!

Kevin