diff --git a/include/system/graphics.h b/include/system/graphics.h
index 729e92c78..e206e3edd 100644
--- a/include/system/graphics.h
+++ b/include/system/graphics.h
@@ -86,7 +86,27 @@ enum {
      */
     HAL_PIXEL_FORMAT_YV12   = 0x32315659, // YCrCb 4:2:0 Planar
 
-
+    /*
+     * Android RAW sensor format:
+     *
+     * This format is exposed outside of the HAL to applications.
+     *
+     * RAW_SENSOR is a single-channel 16-bit format, typically representing raw
+     * Bayer-pattern images from an image sensor, with minimal processing.
+     *
+     * The exact pixel layout of the data in the buffer is sensor-dependent, and
+     * needs to be queried from the camera device.
+     *
+     * Generally, not all 16 bits are used; more common values are 10 or 12
+     * bits. All parameters to interpret the raw data (black and white points,
+     * color space, etc) must be queried from the camera device.
+     *
+     * This format assumes
+     * - an even width
+     * - an even height
+     * - a horizontal stride multiple of 16 pixels (32 bytes).
+     */
+    HAL_PIXEL_FORMAT_RAW_SENSOR = 0x20,
 
     /* Legacy formats (deprecated), used by ImageFormat.java */
     HAL_PIXEL_FORMAT_YCbCr_422_SP       = 0x10, // NV16