xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/mediatek,spi-mt65xx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: SPI Bus controller for MediaTek ARM SoCs

maintainers:
  - Leilk Liu <leilk.liu@mediatek.com>

allOf:
  - $ref: /schemas/spi/spi-controller.yaml#

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - mediatek,mt7629-spi
              - mediatek,mt8365-spi
          - const: mediatek,mt7622-spi
      - items:
          - enum:
              - mediatek,mt8516-spi
          - const: mediatek,mt2712-spi
      - items:
          - enum:
              - mediatek,mt6779-spi
              - mediatek,mt8186-spi
              - mediatek,mt8192-spi
              - mediatek,mt8195-spi
          - const: mediatek,mt6765-spi
      - items:
          - enum:
              - mediatek,mt7986-spi-ipm
              - mediatek,mt8188-spi-ipm
          - const: mediatek,spi-ipm
      - items:
          - enum:
              - mediatek,mt2701-spi
              - mediatek,mt2712-spi
              - mediatek,mt6589-spi
              - mediatek,mt6765-spi
              - mediatek,mt6893-spi
              - mediatek,mt7622-spi
              - mediatek,mt8135-spi
              - mediatek,mt8173-spi
              - mediatek,mt8183-spi

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    minItems: 3
    items:
      - description: clock used for the parent clock
      - description: clock used for the muxes clock
      - description: clock used for the clock gate
      - description: clock used for the AHB bus, this clock is optional

  clock-names:
    minItems: 3
    items:
      - const: parent-clk
      - const: sel-clk
      - const: spi-clk
      - const: hclk

  mediatek,pad-select:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    minItems: 1
    maxItems: 4
    items:
      enum: [0, 1, 2, 3]
    description:
      specify which pins group(ck/mi/mo/cs) spi controller used.
      This is an array.

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names
  - '#address-cells'
  - '#size-cells'

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/mt8173-clk.h>
    #include <dt-bindings/gpio/gpio.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/interrupt-controller/irq.h>

    spi@1100a000 {
      compatible = "mediatek,mt8173-spi";
      #address-cells = <1>;
      #size-cells = <0>;
      reg = <0x1100a000 0x1000>;
      interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_LOW>;
      clocks = <&topckgen CLK_TOP_SYSPLL3_D2>,
               <&topckgen CLK_TOP_SPI_SEL>,
               <&pericfg CLK_PERI_SPI0>;
      clock-names = "parent-clk", "sel-clk", "spi-clk";
      cs-gpios = <&pio 105 GPIO_ACTIVE_LOW>, <&pio 72 GPIO_ACTIVE_LOW>;
      mediatek,pad-select = <1>, <0>;
    };