diff --git a/Documentation/ABI/testing/debugfs-cec-error-inj b/Documentation/ABI/testing/debugfs-cec-error-inj
new file mode 100644
index 0000000000000000000000000000000000000000..122b65c5fe62e873f8e66906fa0e425e03f84644
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-cec-error-inj
@@ -0,0 +1,40 @@
+What:		/sys/kernel/debug/cec/*/error-inj
+Date:		March 2018
+Contact:	Hans Verkuil <hans.verkuil@cisco.com>
+Description:
+
+The CEC Framework allows for CEC error injection commands through
+debugfs. Drivers that support this will create an error-inj file
+through which the error injection commands can be given.
+
+The basic syntax is as follows:
+
+Leading spaces/tabs are ignored. If the next character is a '#' or the
+end of the line was reached, then the whole line is ignored. Otherwise
+a command is expected.
+
+It is up to the driver to decide what commands to implement. The only
+exception is that the command 'clear' without any arguments must be
+implemented and that it will remove all current error injection
+commands.
+
+This ensures that you can always do 'echo clear >error-inj' to clear any
+error injections without having to know the details of the driver-specific
+commands.
+
+Note that the output of 'error-inj' shall be valid as input to 'error-inj'.
+So this must work:
+
+	$ cat error-inj >einj.txt
+	$ cat einj.txt >error-inj
+
+Other than these basic rules described above this ABI is not considered
+stable and may change in the future.
+
+Drivers that implement this functionality must document the commands as
+part of the CEC documentation and must keep that documentation up to date
+when changes are made.
+
+The following CEC error injection implementations exist:
+
+- Documentation/media/uapi/cec/cec-pin-error-inj.rst
diff --git a/MAINTAINERS b/MAINTAINERS
index 2fce65318d4f1345a6ad25bc86e319f3cfce0583..1d1ec49cff90fa3127e30f92c14f4bea1809f50f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3307,6 +3307,7 @@ F:	include/media/cec-notifier.h
 F:	include/uapi/linux/cec.h
 F:	include/uapi/linux/cec-funcs.h
 F:	Documentation/devicetree/bindings/media/cec.txt
+F:	Documentation/ABI/testing/debugfs-cec-error-inj
 
 CEC GPIO DRIVER
 M:	Hans Verkuil <hans.verkuil@cisco.com>