diff --git a/docs/components/activity-monitors.rst b/docs/components/activity-monitors.rst
index 57d81f8..ee280e2 100644
--- a/docs/components/activity-monitors.rst
+++ b/docs/components/activity-monitors.rst
@@ -10,6 +10,23 @@
 the |AMU| prior to its exit from EL3, and will save and restore architected
 |AMU| counters as necessary upon suspend and resume.
 
+Auxiliary counters
+------------------
+
+FEAT_AMUv1 describes a set of implementation-defined auxiliary counters (also
+known as group 1 counters), controlled by the ``ENABLE_AMU_AUXILIARY_COUNTERS``
+build option.
+
+As a security precaution, Trusted Firmware-A does not enable these by default.
+Instead, platforms may configure their auxiliary counters through one of two
+possible mechanisms:
+
+- |FCONF|, controlled by the ``ENABLE_AMU_FCONF`` build option.
+- A platform implementation of the ``plat_amu_topology`` function (the default).
+
+See :ref:`Activity Monitor Unit (AMU) Bindings` for documentation on the |FCONF|
+device tree bindings.
+
 --------------
 
 *Copyright (c) 2021, Arm Limited. All rights reserved.*
diff --git a/docs/components/fconf/amu-bindings.rst b/docs/components/fconf/amu-bindings.rst
new file mode 100644
index 0000000..047f75e
--- /dev/null
+++ b/docs/components/fconf/amu-bindings.rst
@@ -0,0 +1,142 @@
+Activity Monitor Unit (AMU) Bindings
+====================================
+
+To support platform-defined Activity Monitor Unit (|AMU|) auxiliary counters
+through FCONF, the ``HW_CONFIG`` device tree accepts several |AMU|-specific
+nodes and properties.
+
+Bindings
+^^^^^^^^
+
+.. contents::
+    :local:
+
+``/cpus/cpus/cpu*`` node properties
+"""""""""""""""""""""""""""""""""""
+
+The ``cpu`` node has been augmented to support a handle to an associated |AMU|
+view, which should describe the counters offered by the core.
+
++---------------+-------+---------------+-------------------------------------+
+| Property name | Usage | Value type    | Description                         |
++===============+=======+===============+=====================================+
+| ``amu``       | O     | ``<phandle>`` | If present, indicates that an |AMU| |
+|               |       |               | is available and its counters are   |
+|               |       |               | described by the node provided.     |
++---------------+-------+---------------+-------------------------------------+
+
+``/cpus/amus`` node properties
+""""""""""""""""""""""""""""""
+
+The ``amus`` node describes the |AMUs| implemented by the cores in the system.
+This node does not have any properties.
+
+``/cpus/amus/amu*`` node properties
+"""""""""""""""""""""""""""""""""""
+
+An ``amu`` node describes the layout and meaning of the auxiliary counter
+registers of one or more |AMUs|, and may be shared by multiple cores.
+
++--------------------+-------+------------+------------------------------------+
+| Property name      | Usage | Value type | Description                        |
++====================+=======+============+====================================+
+| ``#address-cells`` | R     | ``<u32>``  | Value shall be 1. Specifies that   |
+|                    |       |            | the ``reg`` property array of      |
+|                    |       |            | children of this node uses a       |
+|                    |       |            | single cell.                       |
++--------------------+-------+------------+------------------------------------+
+| ``#size-cells``    | R     | ``<u32>``  | Value shall be 0. Specifies that   |
+|                    |       |            | no size is required in the ``reg`` |
+|                    |       |            | property in children of this node. |
++--------------------+-------+------------+------------------------------------+
+
+``/cpus/amus/amu*/counter*`` node properties
+""""""""""""""""""""""""""""""""""""""""""""
+
+A ``counter`` node describes an auxiliary counter belonging to the parent |AMU|
+view.
+
++-------------------+-------+-------------+------------------------------------+
+| Property name     | Usage | Value type  | Description                        |
++===================+=======+=============+====================================+
+| ``reg``           | R     | array       | Represents the counter register    |
+|                   |       |             | index, and must be a single cell.  |
++-------------------+-------+-------------+------------------------------------+
+| ``enable-at-el3`` | O     | ``<empty>`` | The presence of this property      |
+|                   |       |             | indicates that this counter should |
+|                   |       |             | be enabled prior to EL3 exit.      |
++-------------------+-------+-------------+------------------------------------+
+
+Example
+^^^^^^^
+
+An example system offering four cores made up of two clusters, where the cores
+of each cluster share different |AMUs|, may use something like the following:
+
+.. code-block::
+
+    cpus {
+        #address-cells = <2>;
+        #size-cells = <0>;
+
+        amus {
+            amu0: amu-0 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                counterX: counter@0 {
+                    reg = <0>;
+
+                    enable-at-el3;
+                };
+
+                counterY: counter@1 {
+                    reg = <1>;
+
+                    enable-at-el3;
+                };
+            };
+
+            amu1: amu-1 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                counterZ: counter@0 {
+                    reg = <0>;
+
+                    enable-at-el3;
+                };
+            };
+        };
+
+        cpu0@00000 {
+            ...
+
+            amu = <&amu0>;
+        };
+
+        cpu1@00100 {
+            ...
+
+            amu = <&amu0>;
+        };
+
+        cpu2@10000 {
+            ...
+
+            amu = <&amu1>;
+        };
+
+        cpu3@10100 {
+            ...
+
+            amu = <&amu1>;
+        };
+    }
+
+In this situation, ``cpu0`` and ``cpu1`` (the two cores in the first cluster),
+share the view of their AMUs defined by ``amu0``. Likewise, ``cpu2`` and
+``cpu3`` (the two cores in the second cluster), share the view of their |AMUs|
+defined by ``amu1``. This will cause ``counterX`` and ``counterY`` to be enabled
+for both ``cpu0`` and ``cpu1``, and ``counterZ`` to be enabled for both ``cpu2``
+and ``cpu3``.
diff --git a/docs/components/fconf/index.rst b/docs/components/fconf/index.rst
index 9020633..00a4e29 100644
--- a/docs/components/fconf/index.rst
+++ b/docs/components/fconf/index.rst
@@ -145,3 +145,4 @@
   :maxdepth: 1
 
   fconf_properties
+  amu-bindings