diff --git a/arch/arm64/boot/dts/apple/t6050-j714s.dts b/arch/arm64/boot/dts/apple/t6050-j714s.dts
index 6fc1b66157762..e7d5d62da555e 100644
--- a/arch/arm64/boot/dts/apple/t6050-j714s.dts
+++ b/arch/arm64/boot/dts/apple/t6050-j714s.dts
@@ -98,6 +98,29 @@
 	power-domains = <&pmp0_gfx>;
 };
 
+/*
+ * The SEP (ADT sep, dart-sep): its mailbox, and its power domain with the two
+ * fabric parents left to the firmware, which genpd votes on and never turns off.
+ * The boot loader enables the SEP itself through its alias.
+ */
+&sep_mbox {
+	status = "okay";
+};
+
+&ps_sep {
+	status = "okay";
+};
+
+&ps_fab8_soc {
+	apple,firmware-owned;
+	status = "okay";
+};
+
+&ps_fab0_piogw {
+	apple,firmware-owned;
+	status = "okay";
+};
+
 #include "t6050-j714s-pmp-tunables.dtsi"
 
 /* The same T6050 camera as J716c (J714sAP ADT); the loader sets the J714s sensor type. */