diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d84d7cf..fde60e5 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -479,9 +479,13 @@ void r600_pm_misc(struct radeon_device *rdev)
 	struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
 	struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
 
-	if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
-		radeon_atom_set_voltage(rdev, voltage->voltage);
-
+	DRM_INFO("[DBG] Called with %d\n", voltage->voltage);
+	if (voltage->voltage != rdev->pm.current_vddc) {
+		if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
+			radeon_atom_set_voltage(rdev, voltage->voltage);
+			rdev->pm.current_vddc = voltage->voltage;
+		}
+	}
 }
 
 bool r600_gui_idle(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 084221d..04bc867 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -745,6 +745,7 @@ struct radeon_pm {
 	int                     default_power_state_index;
 	u32                     current_sclk;
 	u32                     current_mclk;
+	u32                     current_vddc;
 	struct radeon_i2c_chan *i2c_bus;
 	/* selected pm method */
 	enum radeon_pm_method     pm_method;
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 4305cd5..ac0b8c2 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -2036,6 +2036,7 @@ void radeon_atom_set_voltage(struct radeon_device *rdev, u16 level)
 	int index = GetIndexIntoMasterTable(COMMAND, SetVoltage);
 	u8 frev, crev, volt_index = level;
 
+DRM_INFO("[DBG] Going to set %d\n", level);
 	if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev))
 		return;
 
@@ -2055,6 +2056,7 @@ void radeon_atom_set_voltage(struct radeon_device *rdev, u16 level)
 		return;
 	}
 
+DRM_INFO("[DBG] Setting %d!\n", level);
 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
 }