diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 919c4d8b18502ba0fa32deae29589c0f55a31a7e..04e8dbddf35bacdc8f1f534a9c54e9e9c2429471 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1033,6 +1033,7 @@ enum radeon_int_thermal_type {
 	THERMAL_TYPE_SUMO,
 	THERMAL_TYPE_NI,
 	THERMAL_TYPE_SI,
+	THERMAL_TYPE_CI,
 };
 
 struct radeon_voltage {
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index dea6f63c9724af9b493fb5693f9e3f406edcb0fb..cb3273b26d4d6ea055264ff0e0f314969351c76c 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1927,6 +1927,7 @@ static const char *pp_lib_thermal_controller_names[] = {
 	"Northern Islands",
 	"Southern Islands",
 	"lm96163",
+	"Sea Islands",
 };
 
 union power_info {
@@ -2209,6 +2210,11 @@ static void radeon_atombios_add_pplib_thermal_controller(struct radeon_device *r
 				 (controller->ucFanParameters &
 				  ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
 			rdev->pm.int_thermal_type = THERMAL_TYPE_SI;
+		} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_CISLANDS) {
+			DRM_INFO("Internal thermal controller %s fan control\n",
+				 (controller->ucFanParameters &
+				  ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
+			rdev->pm.int_thermal_type = THERMAL_TYPE_CI;
 		} else if ((controller->ucType ==
 			    ATOM_PP_THERMALCONTROLLER_EXTERNAL_GPIO) ||
 			   (controller->ucType ==