Documentation/devicetree/bindings/spi/nvidia,tegra20-sflash.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/spi/nvidia,tegra20-sflash.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: NVIDIA Tegra20 SFLASH controller
   8
   9 maintainers:
  10   - Thierry Reding <thierry.reding@gmail.com>
  11   - Jon Hunter <jonathanh@nvidia.com>
  12
  13 properties:
  14   compatible:
  15     const: nvidia,tegra20-sflash
  16
  17   reg:
  18     maxItems: 1
  19
  20   interrupts:
  21     maxItems: 1
  22
  23   clocks:
  24     items:
  25       - description: module clock
  26
  27   resets:
  28     items:
  29       - description: module reset
  30
  31   reset-names:
  32     items:
  33       - const: spi
  34
  35   dmas:
  36     items:
  37       - description: DMA channel used for reception
  38       - description: DMA channel used for transmission
  39
  40   dma-names:
  41     items:
  42       - const: rx
  43       - const: tx
  44
  45   spi-max-frequency:
  46     description: Maximum SPI clocking speed of the controller in Hz.
  47     $ref: /schemas/types.yaml#/definitions/uint32
  48
  49 allOf:
  50   - $ref: spi-controller.yaml
  51
  52 unevaluatedProperties: false
  53
  54 required:
  55   - compatible
  56   - reg
  57   - interrupts
  58   - clocks
  59   - resets
  60   - reset-names
  61   - dmas
  62   - dma-names
  63
  64 examples:
  65   - |
  66     #include <dt-bindings/clock/tegra20-car.h>
  67     #include <dt-bindings/interrupt-controller/arm-gic.h>
  68
  69     spi@7000c380 {
  70         compatible = "nvidia,tegra20-sflash";
  71         reg = <0x7000c380 0x80>;
  72         interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
  73         spi-max-frequency = <25000000>;
  74         #address-cells = <1>;
  75         #size-cells = <0>;
  76         clocks = <&tegra_car TEGRA20_CLK_SPI>;
  77         resets = <&tegra_car 43>;
  78         reset-names = "spi";
  79         dmas = <&apbdma 11>, <&apbdma 11>;
  80         dma-names = "rx", "tx";
  81     };