dt-bindings: i2c: convert i2c-mt65xx to json-schema

* MediaTek's I2C controller

The MediaTek's I2C controller is used to interface with I2C devices.

Required properties:

  - compatible: value should be either of the following.

      "mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for MediaTek MT2701

      "mediatek,mt2712-i2c": for MediaTek MT2712

      "mediatek,mt6577-i2c": for MediaTek MT6577

      "mediatek,mt6589-i2c": for MediaTek MT6589

      "mediatek,mt6797-i2c", "mediatek,mt6577-i2c": for MediaTek MT6797

      "mediatek,mt7622-i2c": for MediaTek MT7622

      "mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623

      "mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629

      "mediatek,mt8168-i2c": for MediaTek MT8168

      "mediatek,mt8173-i2c": for MediaTek MT8173

      "mediatek,mt8183-i2c": for MediaTek MT8183

      "mediatek,mt8186-i2c": for MediaTek MT8186

      "mediatek,mt8192-i2c": for MediaTek MT8192

      "mediatek,mt8195-i2c", "mediatek,mt8192-i2c": for MediaTek MT8195

      "mediatek,mt8516-i2c", "mediatek,mt2712-i2c": for MediaTek MT8516

  - reg: physical base address of the controller and dma base, length of memory

    mapped region.

  - interrupts: interrupt number to the cpu.

  - clock-div: the fixed value for frequency divider of clock source in i2c

    module. Each IC may be different.

  - clocks: clock name from clock manager

  - clock-names: Must include "main" and "dma", "arb" is for multi-master that

    one bus has more than two i2c controllers, if enable have-pmic need include

    "pmic" extra.

Optional properties:

  - clock-frequency: Frequency in Hz of the bus when transfer, the default value

    is 100000.

  - mediatek,have-pmic: platform can control i2c form special pmic side.

    Only mt6589 and mt8135 support this feature.

  - mediatek,use-push-pull: IO config use push-pull mode.

  - vbus-supply: phandle to the regulator that provides power to SCL/SDA.

Example:

	i2c0: i2c@1100d000 {

			compatible = "mediatek,mt6577-i2c";

			reg = <0x1100d000 0x70>,

			      <0x11000300 0x80>;

			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;

			clock-frequency = <400000>;

			mediatek,have-pmic;

			clock-div = <16>;

			clocks = <&i2c0_ck>, <&ap_dma_ck>;

			clock-names = "main", "dma";

	};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/i2c/i2c-mt65xx.yaml#

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

title: MediaTek I2C controller

description:

  This driver interfaces with the native I2C controller present in

  various MediaTek SoCs.

allOf:

  - $ref: /schemas/i2c/i2c-controller.yaml#

maintainers:

  - Qii Wang <qii.wang@mediatek.com>

properties:

  compatible:

    oneOf:

      - const: mediatek,mt2712-i2c

      - const: mediatek,mt6577-i2c

      - const: mediatek,mt6589-i2c

      - const: mediatek,mt7622-i2c

      - const: mediatek,mt8168-i2c

      - const: mediatek,mt8173-i2c

      - const: mediatek,mt8183-i2c

      - const: mediatek,mt8186-i2c

      - const: mediatek,mt8192-i2c

      - items:

          - enum:

              - mediatek,mt7629-i2c

              - mediatek,mt8516-i2c

          - const: mediatek,mt2712-i2c

      - items:

          - enum:

              - mediatek,mt2701-i2c

              - mediatek,mt6797-i2c

              - mediatek,mt7623-i2c

          - const: mediatek,mt6577-i2c

      - items:

          - enum:

              - mediatek,mt8195-i2c

          - const: mediatek,mt8192-i2c

  reg:

    items:

      - description: Physical base address

      - description: DMA base address

  interrupts:

    maxItems: 1

  clocks:

    minItems: 2

    items:

      - description: Main clock for I2C bus

      - description: Clock for I2C via DMA

      - description: Bus arbitrator clock

      - description: Clock for I2C from PMIC

  clock-names:

    minItems: 2

    items:

      - const: main

      - const: dma

      - const: arb

      - const: pmic

  clock-div:

    $ref: /schemas/types.yaml#/definitions/uint32

    description: Frequency divider of clock source in I2C module

  clock-frequency:

    default: 100000

    description:

      SCL frequency to use (in Hz). If omitted, 100kHz is used.

  mediatek,have-pmic:

    description: Platform controls I2C from PMIC side

    type: boolean

  mediatek,use-push-pull:

    description: Use push-pull mode I/O config

    type: boolean

  vbus-supply:

    description: Phandle to the regulator providing power to SCL/SDA

required:

  - compatible

  - reg

  - clocks

  - clock-names

  - clock-div

  - interrupts

unevaluatedProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    #include <dt-bindings/interrupt-controller/irq.h>

    i2c0: i2c@1100d000 {

      compatible = "mediatek,mt6577-i2c";

      reg = <0x1100d000 0x70>, <0x11000300 0x80>;

      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;

      clocks = <&i2c0_ck>, <&ap_dma_ck>;

      clock-names = "main", "dma";

      clock-div = <16>;

      clock-frequency = <400000>;

      mediatek,have-pmic;

      #address-cells = <1>;

      #size-cells = <0>;

    };

M:	Qii Wang <qii.wang@mediatek.com>

L:	linux-i2c@vger.kernel.org

S:	Maintained

F:	Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt

F:	Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml

F:	drivers/i2c/busses/i2c-mt65xx.c

MEDIATEK IOMMU DRIVER