doc: reference: added documentation for Reset Controller

added documentation for Reset Controller Driver

Signed-off-by: Andrei-Edward Popa <andrei.popa105@yahoo.com>

doc/reference/api/overview.rst

@@ -267,6 +267,11 @@ current :ref:`stability level <api_lifecycle>`.
      - 2.4
      - 2.4
 
+   * - :ref:`reset_api`
+     - Experimental
+     - 3.1
+     - 3.1
+
    * - :ref:`spi_api`
      - Stable
      - 1.0

doc/reference/devicetree/api.rst

@@ -318,6 +318,14 @@ properties related to them.
 
 .. doxygengroup:: devicetree-pwms
 
+Reset Controller
+================
+
+These conveniences may be used for nodes which describe reset controllers and
+properties related to them.
+
+.. doxygengroup:: devicetree-reset-controller
+
 SPI
 ===
 

doc/reference/peripherals/index.rst

@@ -29,6 +29,7 @@ Peripherals
    ps2.rst
    peci.rst
    regulators.rst
+   reset.rst
    rtc.rst
    sensor.rst
    spi.rst

doc/reference/peripherals/reset.rst

@@ -0,0 +1,28 @@
+.. _reset_api:
+
+Reset Controller
+################
+
+Overview
+********
+
+Reset controllers are units that control the reset signals to multiple
+peripherals. The reset controller API allows peripheral drivers to request
+control over their reset input signals, including the ability to assert,
+deassert and toggle those signals. Also, the reset status of the reset input
+signal can be checked.
+
+Mainly, the assert and deassert API functions are optional because in most
+cases we want to toggle the reset signals.
+
+Configuration Options
+*********************
+
+Related configuration options:
+
+* :kconfig:option:`CONFIG_RESET`
+
+API Reference
+*************
+
+.. doxygengroup:: reset_controller_interface