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-rw-r--r--Documentation/userspace-api/media/v4l/vidioc-querycap.rst6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst
index 28e1f766128c..666ac4d42051 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst
@@ -264,6 +264,12 @@ specification the ioctl returns an ``EINVAL`` error code.
* - ``V4L2_CAP_TOUCH``
- 0x10000000
- This is a touch device.
+ * - ``V4L2_CAP_IO_MC``
+ - 0x20000000
+ - There is only one input and/or output seen from userspace. The whole
+ video topology configuration, including which I/O entity is routed to
+ the input/output, is configured by userspace via the Media Controller.
+ See :ref:`media_controller`.
* - ``V4L2_CAP_DEVICE_CAPS``
- 0x80000000
- The driver fills the ``device_caps`` field. This capability can