Commit f9d8f4b3 authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Greg Kroah-Hartman
Browse files

dt-bindings: misc: ge-achc: Convert to DT schema format 



Convert the binding to DT schema format. Also update the binding
to fix shortcomings

 * Add "nxp,kinetis-k20" fallback compatible
 * add programming SPI interface and reset GPIO
 * add main clock
 * add voltage supplies
 * drop spi-max-frequency from required properties,
   driver will setup max. frequency

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20210802172309.164365-2-sebastian.reichel@collabora.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 61106bd2

Documentation/devicetree/bindings/misc/ge-achc.txt

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* GE Healthcare USB Management Controller



A device which handles data aquisition from compatible USB based peripherals.

SPI is used for device management.



Note: This device does not expose the peripherals as USB devices.



Required properties:



- compatible : Should be "ge,achc"



Required SPI properties:



- reg : Should be address of the device chip select within

  the controller.



- spi-max-frequency : Maximum SPI clocking speed of device in Hz, should be

  1MHz for the GE ACHC.



Example:



spidev0: spi@0 {

	compatible = "ge,achc";

	reg = <0>;

	spi-max-frequency = <1000000>;

};

Documentation/devicetree/bindings/misc/ge-achc.yaml

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# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause

# Copyright (C) 2021 GE Inc.

# Copyright (C) 2021 Collabora Ltd.

%YAML 1.2

---

$id: http://devicetree.org/schemas/misc/ge-achc.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: GE Healthcare USB Management Controller



description: |

  A device which handles data acquisition from compatible USB based peripherals.

  SPI is used for device management.



  Note: This device does not expose the peripherals as USB devices.



maintainers:

  - Sebastian Reichel <sre@kernel.org>



properties:

  compatible:

    items:

      - const: ge,achc

      - const: nxp,kinetis-k20



  clocks:

    maxItems: 1



  vdd-supply:

    description: Digital power supply regulator on VDD pin



  vdda-supply:

    description: Analog power supply regulator on VDDA pin



  reg:

    items:

      - description: Control interface

      - description: Firmware programming interface



  reset-gpios:

    description: GPIO used for hardware reset.

    maxItems: 1



required:

  - compatible

  - clocks

  - reg

  - reset-gpios



additionalProperties: false



examples:

  - |

    #include <dt-bindings/gpio/gpio.h>

    spi {

        #address-cells = <1>;

        #size-cells = <0>;



        spi@1 {

            compatible = "ge,achc", "nxp,kinetis-k20";

            reg = <1>, <0>;

            clocks = <&achc_24M>;

            reset-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;

        };

    };