Commit 24284199 authored by Nicolas Saenz Julienne's avatar Nicolas Saenz Julienne Committed by Greg Kroah-Hartman
Browse files

dt-bindings: reset: Add a binding for the RPi Firmware reset controller 



The firmware running on the RPi VideoCore can be used to reset and
initialize HW controlled by the firmware.

Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200629161845.6021-2-nsaenzjulienne@suse.de


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d7b74e0d

Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml

+21 −0
Original line number Diff line number Diff line
@@ -48,6 +48,22 @@ properties: 
      - compatible

      - "#clock-cells"



  reset:

    type: object



    properties:

      compatible:

        const: raspberrypi,firmware-reset



      "#reset-cells":

        const: 1

        description: >

          The argument is the ID of the firmware reset line to affect.



    required:

      - compatible

      - "#reset-cells"



    additionalProperties: false



required:
@@ -64,5 +80,10 @@ examples: 
            compatible = "raspberrypi,firmware-clocks";

            #clock-cells = <1>;

        };



        reset: reset {

            compatible = "raspberrypi,firmware-reset";

            #reset-cells = <1>;

        };

    };

...

include/dt-bindings/reset/raspberrypi,firmware-reset.h

0 → 100644
+13 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (c) 2020 Nicolas Saenz Julienne

 * Author: Nicolas Saenz Julienne <nsaenzjulienne@suse.com>

 */



#ifndef _DT_BINDINGS_RASPBERRYPI_FIRMWARE_RESET_H

#define _DT_BINDINGS_RASPBERRYPI_FIRMWARE_RESET_H



#define RASPBERRYPI_FIRMWARE_RESET_ID_USB	0

#define RASPBERRYPI_FIRMWARE_RESET_NUM_IDS	1



#endif