diff --git a/doc/functionality.md b/doc/functionality.md
index 524668832c39e08f3ff135500f8cf29e09690728..de981d9c00ab77e8265bb8e7ee49f54a39c11597 100644
--- a/doc/functionality.md
+++ b/doc/functionality.md
@@ -36,6 +36,10 @@ See `doc/opencv.md` for details of the functionality available in OpenCV.
 | YUV-BGRA  |  x  |
 | YUV-RGB   |  x  |
 | YUV-RGBA  |  x  |
+| RGB-YUV   |  x  |
+| RGBA-YUV  |  x  |
+| BGR-YUV   |  x  |
+| BGRA-YUV  |  x  |
 
 ## Matrix operations
 |                 | s8  | u8  | s16 | u16 | s32 | u32 | s64 |
diff --git a/doc/opencv.md b/doc/opencv.md
index da6688f4545318a0f8f507faf2e1017860dacba3..685bc48539523d9ac009cbd2b5ae31941d602c2f 100644
--- a/doc/opencv.md
+++ b/doc/opencv.md
@@ -57,6 +57,22 @@ Notes on parameters:
 ### `yuv_to_bgr`
 Wrapper for [`yuv_to_bgr_ex`](#yuv_to_bgr_ex) that accepts YUV as a single buffer.
 
+### `bgr_to_yuv`
+RGB/RGBA to YUV image conversion, 3 or 4 channels to 3 channels, no subsampling.
+All supported permutations listed in the table below.
+|    | YUV |
+|----|-----|
+|RGB |  x  |
+|RGBA|  x  |
+|BGR |  x  |
+|BGRA|  x  |
+
+Notes on parameters:
+* `depth` - only supports `CV_8U` depth.
+* `scn` - Source Channel Number. Supports 3 for RGB/BGR and 4 for RGBA/BGRA
+* `swapBlue` - toggles source channels order.
+* `isCbCr` - sets particular YUV format. Only `false` (YUV) is supported.
+
 ### `threshold`
 Binary threshold operation that would apply `maxValue` to any element above threshold, and set the rest to zero.