Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.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,tegra114-spi.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: NVIDIA Tegra114 SPI controller
   8
   9 maintainers:
  10   - Thierry Reding <thierry.reding@gmail.com>
  11   - Jon Hunter <jonathanh@nvidia.com>
  12
  13 properties:
  14   compatible:
  15     oneOf:
  16       - const: nvidia,tegra114-spi
  17       - items:
  18           - enum:
  19               - nvidia,tegra210-spi
  20               - nvidia,tegra124-spi
  21           - const: nvidia,tegra114-spi
  22
  23   reg:
  24     maxItems: 1
  25
  26   interrupts:
  27     maxItems: 1
  28
  29   clocks:
  30     items:
  31       - description: SPI module clock
  32
  33   clock-names:
  34     items:
  35       - const: spi
  36
  37   resets:
  38     items:
  39       - description: SPI module reset
  40
  41   reset-names:
  42     items:
  43       - const: spi
  44
  45   dmas:
  46     items:
  47       - description: DMA channel for the reception FIFO
  48       - description: DMA channel for the transmission FIFO
  49
  50   dma-names:
  51     items:
  52       - const: rx
  53       - const: tx
  54
  55   spi-max-frequency:
  56     description: Maximum SPI clocking speed of the controller in Hz.
  57     $ref: /schemas/types.yaml#/definitions/uint32
  58
  59 allOf:
  60   - $ref: spi-controller.yaml
  61
  62 unevaluatedProperties: false
  63
  64 required:
  65   - compatible
  66   - reg
  67   - interrupts
  68   - clocks
  69   - clock-names
  70   - resets
  71   - reset-names
  72   - dmas
  73   - dma-names
  74
  75 examples:
  76   - |
  77     spi@7000d600 {
  78         compatible = "nvidia,tegra114-spi";
  79         reg = <0x7000d600 0x200>;
  80         interrupts = <0 82 0x04>;
  81         clocks = <&tegra_car 44>;
  82         clock-names = "spi";
  83         resets = <&tegra_car 44>;
  84         reset-names = "spi";
  85         dmas = <&apbdma 16>, <&apbdma 16>;
  86         dma-names = "rx", "tx";
  87
  88         spi-max-frequency = <25000000>;
  89
  90         #address-cells = <1>;
  91         #size-cells = <0>;
  92
  93         flash@0 {
  94             compatible = "jedec,spi-nor";
  95             reg = <0>;
  96             spi-max-frequency = <20000000>;
  97             nvidia,rx-clk-tap-delay = <0>;
  98             nvidia,tx-clk-tap-delay = <16>;
  99         };
 100     };