Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/nvidia,tegra210-quad.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Tegra Quad SPI Controller

maintainers:
  - Thierry Reding <thierry.reding@gmail.com>
  - Jonathan Hunter <jonathanh@nvidia.com>

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

properties:
  compatible:
    enum:
      - nvidia,tegra210-qspi
      - nvidia,tegra186-qspi
      - nvidia,tegra194-qspi
      - nvidia,tegra234-qspi
      - nvidia,tegra241-qspi

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clock-names:
    items:
      - const: qspi
      - const: qspi_out

  clocks:
    maxItems: 2

  resets:
    maxItems: 1

  dmas:
    maxItems: 2

  dma-names:
    items:
      - const: rx
      - const: tx

patternProperties:
  "@[0-9a-f]+$":
    type: object
    additionalProperties: true

    properties:
      spi-rx-bus-width:
        enum: [1, 2, 4]

      spi-tx-bus-width:
        enum: [1, 2, 4]

required:
  - compatible
  - reg
  - interrupts
  - clock-names
  - clocks
  - resets

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/tegra210-car.h>
    #include <dt-bindings/reset/tegra210-car.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    spi@70410000 {
        compatible = "nvidia,tegra210-qspi";
        reg = <0x70410000 0x1000>;
        interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
        #address-cells = <1>;
        #size-cells = <0>;
        clocks = <&tegra_car TEGRA210_CLK_QSPI>,
                 <&tegra_car TEGRA210_CLK_QSPI_PM>;
        clock-names = "qspi", "qspi_out";
        resets = <&tegra_car 211>;
        dmas = <&apbdma 5>, <&apbdma 5>;
        dma-names = "rx", "tx";

        flash@0 {
            compatible = "jedec,spi-nor";
            reg = <0>;
            spi-max-frequency = <104000000>;
            spi-tx-bus-width = <2>;
            spi-rx-bus-width = <2>;
            nvidia,tx-clk-tap-delay = <0>;
            nvidia,rx-clk-tap-delay = <0>;
        };
    };