diff --git a/OpenCL_C.txt b/OpenCL_C.txt
index 610b54e3..494245fe 100644
--- a/OpenCL_C.txt
+++ b/OpenCL_C.txt
@@ -246,6 +246,12 @@ clock shared by all work-items executing in the same work-group.
clock shared by all work-items executing in the same sub-group.
endif::cl_khr_kernel_clock[]
+ifdef::cl_ext_image_unorm_int_2_101010[]
+| {opencl_c_ext_image_unorm_int_2_101010}
+| The OpenCL C compiler supports returning `CLK_UNORM_INT_2_101010_EXT` from
+`get_image_channel_data_type`.
+endif::cl_ext_image_unorm_int_2_101010[]
+
|====
In OpenCL C 3.0 or newer, feature macros must expand to the value `1` if the
@@ -12483,6 +12489,14 @@ endif::cl_khr_gl_msaa_sharing[]
`CLK_UNORM_INT_101010_2` footnote:[{fn-CLK_UNORM_INT_101010_2}]
+ifdef::cl_ext_image_unorm_int_2_101010[]
+ Additionally, if the {opencl_c_ext_image_unorm_int_2_101010} feature macro is
+ supported:
+
+ `CLK_UNORM_INT_2_101010_EXT`
+
+endif::cl_ext_image_unorm_int_2_101010[]
+
| int *get_image_channel_order*(_aQual_ image2d_t _image_) +
int *get_image_channel_order*(_aQual_ image3d_t _image_)
diff --git a/api/cl_ext_image_unorm_int_2_101010.asciidoc b/api/cl_ext_image_unorm_int_2_101010.asciidoc
new file mode 100644
index 00000000..1320526d
--- /dev/null
+++ b/api/cl_ext_image_unorm_int_2_101010.asciidoc
@@ -0,0 +1,39 @@
+// Copyright 2020-2024 The Khronos Group Inc.
+// SPDX-License-Identifier: CC-BY-4.0
+
+include::{generated}/meta/{refprefix}cl_ext_image_unorm_int_2_101010.txt[]
+
+=== Other Extension Metadata
+
+*Last Modified Date*::
+ 2024-05-10
+*IP Status*::
+ No known IP claims.
+*Contributors*::
+ - Kévin Petit, Arm Ltd.
+
+=== Description
+
+{cl_ext_image_unorm_int_2_101010_EXT} adds support for the {CL_UNORM_INT_2_101010_EXT}
+image format.
+
+OpenCL C compilers supporting this extension will define the
+{opencl_c_ext_image_unorm_int_2_101010} feature macro.
+
+=== New feature macro
+
+ * {opencl_c_ext_image_unorm_int_2_101010}
+
+=== New Enums
+
+ * {cl_channel_type_TYPE}
+ ** {CL_UNORM_INT_2_101010_EXT}
+
+=== New OpenCL C channel data type
+
+ * `CLK_UNORM_INT_2_101010_EXT`
+
+=== Version History
+
+ * Revision 1.0.0, 2024-05-10
+ ** Initial version
diff --git a/api/opencl_runtime_layer.asciidoc b/api/opencl_runtime_layer.asciidoc
index 263ca185..cef5e708 100644
--- a/api/opencl_runtime_layer.asciidoc
+++ b/api/opencl_runtime_layer.asciidoc
@@ -2474,6 +2474,15 @@ include::{generated}/api/version-notes/CL_UNORM_INT_101010_2.asciidoc[]
include::{generated}/api/version-notes/CL_SIGNED_INT8.asciidoc[]
| Each channel component is an unnormalized signed 8-bit integer value
+
+ifdef::cl_ext_image_unorm_int_2_101010[]
+| {CL_UNORM_INT_2_101010_EXT_anchor}
+
+include::{generated}/api/version-notes/CL_UNORM_INT_2_101010_EXT.asciidoc[]
+ | Represents a normalized 2-10-10-10 four-channel ABGR image.
+ The channel order must be {CL_ABGR}.
+endif::cl_ext_image_unorm_int_2_101010[]
+
| {CL_SIGNED_INT16_anchor}
include::{generated}/api/version-notes/CL_SIGNED_INT16.asciidoc[]
@@ -2565,6 +2574,10 @@ For {CL_UNORM_INT_101010}, bits 31:30 are undefined, R is in bits 29:20, G in
bits 19:10 and B in bits 9:0.
For {CL_UNORM_INT_101010_2}, R is in bits 31:22, G in bits 21:12, B in bits
11:2 and A in bits 1:0.
+ifdef::cl_ext_image_unorm_int_2_101010[]
+For {CL_UNORM_INT_2_101010_EXT}, A is in bits 31:30, B in bits 29:20, G in bits
+19:10 and R in bits 9:0.
+endif::cl_ext_image_unorm_int_2_101010[]
OpenCL implementations must maintain the minimum precision specified by the
number of bits in `image_channel_data_type`.
diff --git a/c/features.txt b/c/features.txt
index b7e636dd..35a649c8 100644
--- a/c/features.txt
+++ b/c/features.txt
@@ -18,3 +18,4 @@ __opencl_c_integer_dot_product_input_4x8bit_packed
__opencl_c_kernel_clock_scope_device
__opencl_c_kernel_clock_scope_work_group
__opencl_c_kernel_clock_scope_sub_group
+__opencl_c_ext_image_unorm_int_2_101010
diff --git a/env/common_properties.asciidoc b/env/common_properties.asciidoc
index 8019b751..2b732c78 100644
--- a/env/common_properties.asciidoc
+++ b/env/common_properties.asciidoc
@@ -384,6 +384,11 @@ channel data types.
| *UnormInt101010_2*
| {CL_UNORM_INT_101010_2}
+ifdef::cl_ext_image_unorm_int_2_101010[]
+| 21
+| *UnormInt2_101010EXT*
+| {CL_UNORM_INT_2_101010_EXT}
+endif::cl_ext_image_unorm_int_2_101010[]
|====
[NOTE]
diff --git a/xml/cl.xml b/xml/cl.xml
index e0784300..12ff3d09 100644
--- a/xml/cl.xml
+++ b/xml/cl.xml
@@ -1608,7 +1608,8 @@ server's OpenCL/api-docs repository.
-
+
+
@@ -7475,5 +7476,10 @@ server's OpenCL/api-docs repository.
+
+
+
+
+