xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/spi/nvidia,tegra20-sflash.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/nvidia,tegra20-sflash.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVIDIA Tegra20 SFLASH controller

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

properties:
  compatible:
    const: nvidia,tegra20-sflash

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    items:
      - description: module clock

  resets:
    items:
      - description: module reset

  reset-names:
    items:
      - const: spi

  dmas:
    items:
      - description: DMA channel used for reception
      - description: DMA channel used for transmission

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

  spi-max-frequency:
    description: Maximum SPI clocking speed of the controller in Hz.
    $ref: /schemas/types.yaml#/definitions/uint32

allOf:
  - $ref: spi-controller.yaml

unevaluatedProperties: false

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - resets
  - reset-names
  - dmas
  - dma-names

examples:
  - |
    #include <dt-bindings/clock/tegra20-car.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    spi@7000c380 {
        compatible = "nvidia,tegra20-sflash";
        reg = <0x7000c380 0x80>;
        interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
        spi-max-frequency = <25000000>;
        #address-cells = <1>;
        #size-cells = <0>;
        clocks = <&tegra_car TEGRA20_CLK_SPI>;
        resets = <&tegra_car 43>;
        reset-names = "spi";
        dmas = <&apbdma 11>, <&apbdma 11>;
        dma-names = "rx", "tx";
    };