diff --git a/Documentation/platforms/sim/index.rst b/Documentation/platforms/sim/index.rst
index 84adbf17c8a..014d567a147 100644
--- a/Documentation/platforms/sim/index.rst
+++ b/Documentation/platforms/sim/index.rst
@@ -15,3 +15,4 @@ The following Simulator/Emulators are supported:
    network_linux
    network_vpnkit
    sim_gpiochip
+   sim_input
diff --git a/Documentation/platforms/sim/sim_input.rst b/Documentation/platforms/sim/sim_input.rst
new file mode 100644
index 00000000000..1a288a49948
--- /dev/null
+++ b/Documentation/platforms/sim/sim_input.rst
@@ -0,0 +1,38 @@
+====================
+Sim Input Interfaces
+====================
+
+Overview
+========
+
+The Sim can emulate buttons, keyboard, touchscreen-mouse based, mouse with 3 buttons and analog-mouse based joystick.
+
+These drivers are particularly useful for graphical applications emulared over X11.
+
+Buttons
+=======
+
+This driver emulates a button using the user Mouse button. You can enable it using
+``CONFIG_SIM_BUTTONS``.
+
+Joystick
+========
+
+This driver simulates an Analog Joystick using the user mouse.
+
+Keyboard
+========
+
+There are two types of keyboards: is native one used by default on NuttX SIM, since it is used to access the NuttShell interface and the ``CONFIG_SIM_KEYBOARD`` used with graphical applications.
+
+Mouse
+=====
+
+The driver emulates a Mouse with 3 buttons support. It can be enabled using the
+symbol: ``CONFIG_SIM_MOUSE``. This driver is useful with used with more advanced interfaces like Microwindow/Nano-X that require at least left and right click buttons events.
+
+Touchscreen
+===========
+
+The difference between this driver and the Mouse is because this only generates a pen-down event when the user click in the interface. It is useful to use with LVGL graphic interface.
+