bindings/gpio/nvidia,tegra20-gpio.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/gpio/nvidia,tegra20-gpio.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: NVIDIA Tegra GPIO Controller (Tegra20 - Tegra210)
   8
   9 maintainers:
  10   - Thierry Reding <thierry.reding@gmail.com>
  11   - Jon Hunter <jonathanh@nvidia.com>
  12
  13 properties:
  14   compatible:
  15     oneOf:
  16       - enum:
  17           - nvidia,tegra20-gpio
  18           - nvidia,tegra30-gpio
  19
  20       - items:
  21           - enum:
  22               - nvidia,tegra114-gpio
  23               - nvidia,tegra124-gpio
  24               - nvidia,tegra210-gpio
  25           - const: nvidia,tegra30-gpio
  26
  27   reg:
  28     maxItems: 1
  29
  30   interrupts:
  31     description: The interrupt outputs from the controller. For Tegra20,
  32       there should be 7 interrupts specified, and for Tegra30, there should
  33       be 8 interrupts specified.
  34
  35   "#gpio-cells":
  36     description: The first cell is the pin number and the second cell is used
  37       to specify the GPIO polarity (0 = active high, 1 = active low).
  38     const: 2
  39
  40   gpio-controller: true
  41
  42   gpio-ranges:
  43     maxItems: 1
  44
  45   "#interrupt-cells":
  46     description: |
  47       Should be 2. The first cell is the GPIO number. The second cell is
  48       used to specify flags:
  49
  50         bits[3:0] trigger type and level flags:
  51           1 = low-to-high edge triggered.
  52           2 = high-to-low edge triggered.
  53           4 = active high level-sensitive.
  54           8 = active low level-sensitive.
  55
  56       Valid combinations are 1, 2, 3, 4, 8.
  57     const: 2
  58
  59   interrupt-controller: true
  60
  61 allOf:
  62   - if:
  63       properties:
  64         compatible:
  65           contains:
  66             const: nvidia,tegra30-gpio
  67     then:
  68       properties:
  69         interrupts:
  70           minItems: 8
  71           maxItems: 8
  72     else:
  73       properties:
  74         interrupts:
  75           minItems: 7
  76           maxItems: 7
  77
  78 required:
  79   - compatible
  80   - reg
  81   - interrupts
  82   - "#gpio-cells"
  83   - gpio-controller
  84   - "#interrupt-cells"
  85   - interrupt-controller
  86
  87 additionalProperties:
  88   type: object
  89   required:
  90     - gpio-hog
  91
  92 examples:
  93   - |
  94     #include <dt-bindings/interrupt-controller/arm-gic.h>
  95
  96     gpio: gpio@6000d000 {
  97         compatible = "nvidia,tegra20-gpio";
  98         reg = <0x6000d000 0x1000>;
  99         interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
 100                      <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
 101                      <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
 102                      <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
 103                      <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
 104                      <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
 105                      <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
 106         #gpio-cells = <2>;
 107         gpio-controller;
 108         #interrupt-cells = <2>;
 109         interrupt-controller;
 110     };