diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
index ddf8822219fb..5700bcc7ad9a 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
@@ -1529,6 +1529,17 @@ static void pp_pm_compute_clocks(void *handle)
 			      NULL);
 }
 
+static void pp_dpm_notify_ac_dc(void *handle)
+{
+	struct pp_hwmgr *hwmgr = handle;
+
+	if (!hwmgr || !hwmgr->pm_en)
+		return;
+
+	if (hwmgr->hwmgr_func->notify_ac_dc)
+		hwmgr->hwmgr_func->notify_ac_dc(hwmgr);
+}
+
 static const struct amd_pm_funcs pp_dpm_funcs = {
 	.load_firmware = pp_dpm_load_fw,
 	.wait_for_fw_loading_complete = pp_dpm_fw_loading_complete,
@@ -1593,4 +1604,5 @@ static const struct amd_pm_funcs pp_dpm_funcs = {
 	.gfx_state_change_set = pp_gfx_state_change_set,
 	.get_smu_prv_buf_details = pp_get_prv_buffer_details,
 	.pm_compute_clocks = pp_pm_compute_clocks,
+	.notify_ac_dc = pp_dpm_notify_ac_dc,
 };
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
index 55e2375e1dad..95bf187f02a5 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
@@ -5854,6 +5854,20 @@ static int smu7_power_off_asic(struct pp_hwmgr *hwmgr)
 	return result;
 }
 
+static void smu7_notify_ac_dc(struct pp_hwmgr *hwmgr)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)(hwmgr->adev);
+
+	/* Check if the platform already manages the AC/DC switch via dedicated GPIO. */
+	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
+			    PHM_PlatformCaps_AutomaticDCTransition))
+		return;
+
+	/* The SMU automatically notices DC, but needs to be notified when switching to AC. */
+	if (adev->pm.ac_power)
+		smum_send_msg_to_smc(hwmgr, PPSMC_MSG_RunningOnAC, NULL);
+}
+
 static const struct pp_hwmgr_func smu7_hwmgr_funcs = {
 	.backend_init = &smu7_hwmgr_backend_init,
 	.backend_fini = &smu7_hwmgr_backend_fini,
@@ -5916,6 +5930,7 @@ static const struct pp_hwmgr_func smu7_hwmgr_funcs = {
 	.get_asic_baco_state = smu7_baco_get_state,
 	.set_asic_baco_state = smu7_baco_set_state,
 	.power_off_asic = smu7_power_off_asic,
+	.notify_ac_dc = smu7_notify_ac_dc,
 };
 
 uint8_t smu7_get_sleep_divider_id_from_clock(uint32_t clock,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/pm/powerplay/inc/hwmgr.h
index fc1ffe1b2c97..ca71efaa1656 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/inc/hwmgr.h
@@ -362,6 +362,7 @@ struct pp_hwmgr_func {
 					bool disable);
 	ssize_t (*get_gpu_metrics)(struct pp_hwmgr *hwmgr, void **table);
 	int (*gfx_state_change)(struct pp_hwmgr *hwmgr, uint32_t state);
+	void (*notify_ac_dc)(struct pp_hwmgr *hwmgr);
 };
 
 struct pp_table_func {