diff --git a/soc/intel/intel_adsp/ace/multiprocessing.c b/soc/intel/intel_adsp/ace/multiprocessing.c
index 5d65af42683..3616861ea0f 100644
--- a/soc/intel/intel_adsp/ace/multiprocessing.c
+++ b/soc/intel/intel_adsp/ace/multiprocessing.c
@@ -11,6 +11,7 @@
 #include <zephyr/arch/cpu.h>
 #include <zephyr/arch/xtensa/arch.h>
 #include <zephyr/pm/pm.h>
+#include <zephyr/pm/policy.h>
 #include <zephyr/pm/device_runtime.h>
 #include <ksched.h>
 
@@ -147,6 +148,11 @@ void soc_start_core(int cpu_num)
 		} else {
 			*rom_jump_vector = (uint32_t) dsp_restore_vector;
 		}
+
+		/* The primary core cannot enter power gating if any of the secondary cores are
+		 * active.
+		 */
+		pm_policy_state_lock_get(PM_STATE_RUNTIME_IDLE, PM_ALL_SUBSTATES);
 #else
 		*rom_jump_vector = (uint32_t) z_soc_mp_asm_entry;
 #endif
diff --git a/soc/intel/intel_adsp/ace/power.c b/soc/intel/intel_adsp/ace/power.c
index 34684e6756c..fc0f87570ec 100644
--- a/soc/intel/intel_adsp/ace/power.c
+++ b/soc/intel/intel_adsp/ace/power.c
@@ -5,6 +5,7 @@
  */
 #include <zephyr/kernel.h>
 #include <zephyr/pm/pm.h>
+#include <zephyr/pm/policy.h>
 #include <zephyr/pm/device_runtime.h>
 #include <zephyr/device.h>
 #include <zephyr/debug/sparse.h>
@@ -342,6 +343,10 @@ void pm_state_set(enum pm_state state, uint8_t substate_id)
 			/* do power down - this function won't return */
 			power_down(true, IS_ENABLED(CONFIG_ADSP_POWER_DOWN_HPSRAM), true);
 		} else {
+			/* When all secondary cores are turned off, power gating for the primary
+			 * core will be re-enabled.
+			 */
+			pm_policy_state_lock_put(PM_STATE_RUNTIME_IDLE, PM_ALL_SUBSTATES);
 			power_gate_entry(cpu);
 		}
 		break;