Commit 0386e81d authored by Lubomir Rintel's avatar Lubomir Rintel Committed by Rob Herring
Browse files

dt-bindings: misc: Convert olpc,xo1.75-ec to json-schema 



Convert the OLPC XO-1.75 Embedded Controller binding to DT schema format
using json-schema.

Signed-off-by: default avatarLubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20200718211244.187938-1-lkundrak@v3.sk


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 0e77639e

Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt

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OLPC XO-1.75 Embedded Controller



Required properties:

- compatible: Should be "olpc,xo1.75-ec".

- cmd-gpios: gpio specifier of the CMD pin



The embedded controller requires the SPI controller driver to signal readiness

to receive a transfer (that is, when TX FIFO contains the response data) by

strobing the ACK pin with the ready signal. See the "ready-gpios" property of the

SSP binding as documented in:

<Documentation/devicetree/bindings/spi/marvell,mmp2-ssp.yaml>.



Example:

	&ssp3 {

		spi-slave;

		ready-gpios = <&gpio 125 GPIO_ACTIVE_HIGH>;



		slave {

			compatible = "olpc,xo1.75-ec";

			spi-cpha;

			cmd-gpios = <&gpio 155 GPIO_ACTIVE_HIGH>;

		};

	};

Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.yaml

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

# Copyright (C) 2019,2020 Lubomir Rintel <lkundrak@v3.sk>

%YAML 1.2

---

$id: http://devicetree.org/schemas/misc/olpc,xo1.75-ec.yaml#

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



title: OLPC XO-1.75 Embedded Controller bindings



description: |

  This binding describes the Embedded Controller acting as a SPI bus master

  on a OLPC XO-1.75 laptop computer.



  The embedded controller requires the SPI controller driver to signal

  readiness to receive a transfer (that is, when TX FIFO contains the

  response data) by strobing the ACK pin with the ready signal. See the

  "ready-gpios" property of the SSP binding as documented in:

  <Documentation/devicetree/bindings/spi/marvell,mmp2-ssp.yaml>.



maintainers:

  - Lubomir Rintel <lkundrak@v3.sk>



properties:

  compatible:

    const: olpc,xo1.75-ec



  cmd-gpios:

    description: GPIO uspecifier of the CMD pin

    maxItems: 1



required:

  - compatible

  - cmd-gpios



unevaluatedProperties: false



examples:

  - |

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



    spi {

      spi-slave;

      ready-gpios = <&gpio 125 GPIO_ACTIVE_HIGH>;



      slave {

        compatible = "olpc,xo1.75-ec";

        spi-cpha;

        cmd-gpios = <&gpio 155 GPIO_ACTIVE_HIGH>;

      };

    };



...