Unverified Commit 4de1cdb3 authored by Karan Sanghavi's avatar Karan Sanghavi Committed by Mark Brown
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spi: dt-bindings: brcm,bcm2835-aux-spi: Convert to dtschema 



Convert bcm2835-aux-spi binding to Dt schema

Signed-off-by: default avatarKaran Sanghavi <karansanghvi98@gmail.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/ZxEm-H-PjlQyXeOH@Emma


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 941584e2

Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt

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Broadcom BCM2835 auxiliary SPI1/2 controller



The BCM2835 contains two forms of SPI master controller, one known simply as

SPI0, and the other known as the "Universal SPI Master"; part of the

auxiliary block. This binding applies to the SPI1/2 controller.



Required properties:

- compatible: Should be "brcm,bcm2835-aux-spi".

- reg: Should contain register location and length for the spi block

- interrupts: Should contain shared interrupt of the aux block

- clocks: The clock feeding the SPI controller - needs to

	  point to the auxiliary clock driver of the bcm2835,

	  as this clock will enable the output gate for the specific

	  clock.

- cs-gpios: the cs-gpios (native cs is NOT supported)

	    see also spi-bus.txt



Example:



spi1@7e215080 {

	compatible = "brcm,bcm2835-aux-spi";

	reg = <0x7e215080 0x40>;

	interrupts = <1 29>;

	clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>;

	#address-cells = <1>;

	#size-cells = <0>;

	cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>;

};



spi2@7e2150c0 {

	compatible = "brcm,bcm2835-aux-spi";

	reg = <0x7e2150c0 0x40>;

	interrupts = <1 29>;

	clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>;

	#address-cells = <1>;

	#size-cells = <0>;

	cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>;

};

Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.yaml

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/spi/brcm,bcm2835-aux-spi.yaml#

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



title: Broadcom BCM2835 Auxiliary SPI1/2 Controller



maintainers:

  - Karan Sanghavi <karansanghvi98@gmail.com>



description:

  The BCM2835 contains two forms of SPI master controller. One is known simply

  as SPI0, and the other as the "Universal SPI Master," which is part of the

  auxiliary block. This binding applies to the SPI1 and SPI2 auxiliary

  controllers.



allOf:

  - $ref: spi-controller.yaml#



properties:

  compatible:

    enum:

      - brcm,bcm2835-aux-spi



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  clocks:

    maxItems: 1



required:

  - compatible

  - reg

  - interrupts

  - clocks



unevaluatedProperties: false



examples:

  - |

    #include <dt-bindings/clock/bcm2835-aux.h>

    spi@7e215080 {

        compatible = "brcm,bcm2835-aux-spi";

        reg = <0x7e215080 0x40>;

        interrupts = <1 29>;

        clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>;

        #address-cells = <1>;

        #size-cells = <0>;

    };