Bindings/gpio/socionext,uniphier-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/socionext,uniphier-gpio.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: UniPhier GPIO controller
   8
   9 maintainers:
  10   - Masahiro Yamada <yamada.masahiro@socionext.com>
  11
  12 properties:
  13   $nodename:
  14     pattern: "^gpio@[0-9a-f]+$"
  15
  16   compatible:
  17     const: socionext,uniphier-gpio
  18
  19   reg:
  20     maxItems: 1
  21
  22   gpio-controller: true
  23
  24   "#gpio-cells":
  25     const: 2
  26
  27   interrupt-controller: true
  28
  29   "#interrupt-cells":
  30     description: |
  31       The first cell defines the interrupt number.
  32       The second cell bits[3:0] is used to specify trigger type as follows:
  33         1 = low-to-high edge triggered
  34         2 = high-to-low edge triggered
  35         4 = active high level-sensitive
  36         8 = active low level-sensitive
  37       Valid combinations are 1, 2, 3, 4, 8.
  38     const: 2
  39
  40   ngpios:
  41     minimum: 0
  42     maximum: 512
  43
  44   gpio-ranges: true
  45
  46   gpio-ranges-group-names: true
  47
  48   socionext,interrupt-ranges:
  49     description: |
  50       Specifies an interrupt number mapping between this GPIO controller and
  51       its interrupt parent, in the form of arbitrary number of
  52       <child-interrupt-base parent-interrupt-base length> triplets.
  53     $ref: /schemas/types.yaml#/definitions/uint32-matrix
  54
  55 patternProperties:
  56   "^.+-hog(-[0-9]+)?$":
  57     type: object
  58     properties:
  59       gpio-hog: true
  60       gpios: true
  61       input: true
  62       output-high: true
  63       output-low: true
  64       line-name: true
  65
  66     required:
  67       - gpio-hog
  68       - gpios
  69
  70     additionalProperties: false
  71
  72 required:
  73   - compatible
  74   - reg
  75   - gpio-controller
  76   - "#gpio-cells"
  77   - interrupt-controller
  78   - "#interrupt-cells"
  79   - ngpios
  80   - gpio-ranges
  81   - socionext,interrupt-ranges
  82
  83 additionalProperties: false
  84
  85 examples:
  86   - |
  87     #include <dt-bindings/gpio/gpio.h>
  88     #include <dt-bindings/gpio/uniphier-gpio.h>
  89
  90     gpio: gpio@55000000 {
  91         compatible = "socionext,uniphier-gpio";
  92         reg = <0x55000000 0x200>;
  93         interrupt-parent = <&aidet>;
  94         interrupt-controller;
  95         #interrupt-cells = <2>;
  96         gpio-controller;
  97         #gpio-cells = <2>;
  98         gpio-ranges = <&pinctrl 0 0 0>;
  99         gpio-ranges-group-names = "gpio_range";
 100         ngpios = <248>;
 101         socionext,interrupt-ranges = <0 48 16>, <16 154 5>, <21 217 3>;
 102     };
 103
 104     // Consumer:
 105     // Please note UNIPHIER_GPIO_PORT(29, 4) represents PORT294 in the SoC
 106     // document. Unfortunately, only the one's place is octal in the port
 107     // numbering. (That is, PORT 8, 9, 18, 19, 28, 29, ... do not exist.)
 108     // UNIPHIER_GPIO_PORT() is a helper macro to calculate 29 * 8 + 4.
 109     sdhci0_pwrseq {
 110         compatible = "mmc-pwrseq-emmc";
 111         reset-gpios = <&gpio UNIPHIER_GPIO_PORT(29, 4) GPIO_ACTIVE_LOW>;
 112     };