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
  7title: NVIDIA Tegra GPIO Controller (Tegra20 - Tegra210)
  8
  9maintainers:
 10  - Thierry Reding <thierry.reding@gmail.com>
 11  - Jon Hunter <jonathanh@nvidia.com>
 12
 13properties:
 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
 61allOf:
 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
 78required:
 79  - compatible
 80  - reg
 81  - interrupts
 82  - "#gpio-cells"
 83  - gpio-controller
 84  - "#interrupt-cells"
 85  - interrupt-controller
 86
 87additionalProperties:
 88  type: object
 89  required:
 90    - gpio-hog
 91
 92examples:
 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    };