diff --git a/target/linux/apm821xx/dts/netgear-wndr4700.dts b/target/linux/apm821xx/dts/netgear-wndr4700.dts
index 24603c4247..8972d2b030 100644
--- a/target/linux/apm821xx/dts/netgear-wndr4700.dts
+++ b/target/linux/apm821xx/dts/netgear-wndr4700.dts
@@ -36,13 +36,25 @@
 
 			thermal-sensors = <&temp0 1>;
 
+			/*
+			 * REVISIT:
+			 *
+			 * Add the <&drive_temp>; sensor there and wire up
+			 * the coefficients = <1 1>; property.
+			 *
+			 * Note: The kernel does not yet support more than
+			 * one sensor (see of_thermal.c's function:
+			 * thermal_of_build_thermal_zon()). Once this is
+			 * implemented.
+			 */
+
 			trips {
 				/*
 				 * Once the thermal governers are a bit smarter
 				 * and do hysteresis properly, we can disable
 				 * the fan when the HDD and CPU has < 39 C.
 				 */
-				cpu_alert0: cpu-alert0 {
+				cpu_alert0: board-alert0 {
 					temperature = <25000>;
 					hysteresis = <2000>;
 					type = "active";
@@ -145,6 +157,17 @@
 
 &SATA1 {
 	status = "okay";
+
+	/*
+	 * This drive may have a temperature sensor with a
+	 * thermal zone we can use for thermal control of the
+	 * chassis temperature using the fan.
+	 */
+
+	drive_temp: sata-port@0 {
+		reg = <0>;
+		#thermal-sensor-cells = <0>;
+	};
 };
 
 &USBOTG0 {
diff --git a/target/linux/apm821xx/image/Makefile b/target/linux/apm821xx/image/Makefile
index 27c7f122da..d732141c8f 100644
--- a/target/linux/apm821xx/image/Makefile
+++ b/target/linux/apm821xx/image/Makefile
@@ -191,7 +191,7 @@ TARGET_DEVICES += netgear_wndap660
 define Device/netgear_wndr4700
   DEVICE_VENDOR := NETGEAR
   DEVICE_MODEL := Centria N900 WNDR4700/WNDR4720
-  DEVICE_PACKAGES := badblocks block-mount e2fsprogs \
+  DEVICE_PACKAGES := badblocks block-mount e2fsprogs kmod-hwmon-drivetemp \
 	kmod-dm kmod-fs-ext4 kmod-fs-vfat kmod-usb-ledtrig-usbport \
 	kmod-md-mod kmod-nls-cp437 kmod-nls-iso8859-1 kmod-nls-iso8859-15 \
 	kmod-nls-utf8 kmod-usb3 kmod-usb-dwc2 kmod-usb-storage \