| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/gpio/realtek,otto-gpio.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Realtek Otto GPIO controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Sander Vanheule <sander@svanheule.net> |
| 11 | - Bert Vermeulen <bert@biot.com> |
| 12 | |
| 13 | description: | |
| 14 | Realtek's GPIO controller on their MIPS switch SoCs (Otto platform) consists |
| 15 | of two banks of 32 GPIOs. These GPIOs can generate edge-triggered interrupts. |
| 16 | Each bank's interrupts are cascased into one interrupt line on the parent |
| 17 | interrupt controller, if provided. |
| 18 | This binding allows defining a single bank in the devicetree. The interrupt |
| 19 | controller is not supported on the fallback compatible name, which only |
| 20 | allows for GPIO port use. |
| 21 | |
| 22 | properties: |
| 23 | $nodename: |
| 24 | pattern: "^gpio@[0-9a-f]+$" |
| 25 | |
| 26 | compatible: |
| 27 | items: |
| 28 | - enum: |
| 29 | - realtek,rtl8380-gpio |
| 30 | - realtek,rtl8390-gpio |
| 31 | - realtek,rtl9300-gpio |
| 32 | - realtek,rtl9310-gpio |
| 33 | - const: realtek,otto-gpio |
| 34 | |
| 35 | reg: true |
| 36 | |
| 37 | "#gpio-cells": |
| 38 | const: 2 |
| 39 | |
| 40 | gpio-controller: true |
| 41 | |
| 42 | ngpios: |
| 43 | minimum: 1 |
| 44 | maximum: 32 |
| 45 | |
| 46 | interrupt-controller: true |
| 47 | |
| 48 | "#interrupt-cells": |
| 49 | const: 2 |
| 50 | |
| 51 | interrupts: |
| 52 | maxItems: 1 |
| 53 | |
| 54 | if: |
| 55 | properties: |
| 56 | compatible: |
| 57 | contains: |
| 58 | const: realtek,rtl9300-gpio |
| 59 | then: |
| 60 | properties: |
| 61 | reg: |
| 62 | items: |
| 63 | - description: GPIO and interrupt control |
| 64 | - description: interrupt CPU map |
| 65 | else: |
| 66 | properties: |
| 67 | reg: |
| 68 | items: |
| 69 | - description: GPIO and interrupt control |
| 70 | |
| 71 | required: |
| 72 | - compatible |
| 73 | - reg |
| 74 | - "#gpio-cells" |
| 75 | - gpio-controller |
| 76 | |
| 77 | additionalProperties: false |
| 78 | |
| 79 | dependencies: |
| 80 | interrupt-controller: [ interrupts ] |
| 81 | |
| 82 | examples: |
| 83 | - | |
| 84 | gpio@3500 { |
| 85 | compatible = "realtek,rtl8380-gpio", "realtek,otto-gpio"; |
| 86 | reg = <0x3500 0x1c>; |
| 87 | gpio-controller; |
| 88 | #gpio-cells = <2>; |
| 89 | ngpios = <24>; |
| 90 | interrupt-controller; |
| 91 | #interrupt-cells = <2>; |
| 92 | interrupt-parent = <&rtlintc>; |
| 93 | interrupts = <23>; |
| 94 | }; |
| 95 | - | |
| 96 | gpio@3300 { |
| 97 | compatible = "realtek,rtl9300-gpio", "realtek,otto-gpio"; |
| 98 | reg = <0x3300 0x1c>, <0x3338 0x8>; |
| 99 | gpio-controller; |
| 100 | #gpio-cells = <2>; |
| 101 | ngpios = <24>; |
| 102 | interrupt-controller; |
| 103 | #interrupt-cells = <2>; |
| 104 | interrupt-parent = <&rtlintc>; |
| 105 | interrupts = <13>; |
| 106 | }; |
| 107 | |
| 108 | ... |