--- /dev/null
+From 1c643cbdcfaa7e8b4a52bb8555cce60b48d822a2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:55:59 +0000
+Subject: [PATCH] Documentation: DT: add device tree for PWDN
+ control
+
+Add optional GPIO pwdn to connect to the PWDN line on the sensor.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ Documentation/devicetree/bindings/media/i2c/ov5647.txt | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/Documentation/devicetree/bindings/media/i2c/ov5647.txt
++++ b/Documentation/devicetree/bindings/media/i2c/ov5647.txt
+@@ -10,6 +10,9 @@ Required properties:
+ - reg : I2C slave address of the sensor.
+ - clocks : Reference to the xclk clock.
+
++Optional Properties:
++- pwdn-gpios: reference to the GPIO connected to the pwdn pin, if any.
++
+ The common video interfaces bindings (see video-interfaces.txt) should be
+ used to specify link to the image data receiver. The OV5647 device
+ node should contain one 'port' child node with an 'endpoint' subnode.
+@@ -26,6 +29,7 @@ Example:
+ compatible = "ovti,ov5647";
+ reg = <0x36>;
+ clocks = <&camera_clk>;
++ pwdn-gpios = <&pioE 29 GPIO_ACTIVE_HIGH>;
+ port {
+ camera_1: endpoint {
+ remote-endpoint = <&csi1_ep1>;