| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/gpio/sifive,gpio.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: SiFive GPIO controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Paul Walmsley <paul.walmsley@sifive.com> |
| 11 | |
| 12 | properties: |
| 13 | compatible: |
| 14 | items: |
| 15 | - enum: |
| 16 | - sifive,fu540-c000-gpio |
| 17 | - sifive,fu740-c000-gpio |
| 18 | - canaan,k210-gpiohs |
| 19 | - const: sifive,gpio0 |
| 20 | |
| 21 | reg: |
| 22 | maxItems: 1 |
| 23 | |
| 24 | interrupts: |
| 25 | description: |
| 26 | Interrupt mapping, one per GPIO. Maximum 32 GPIOs. |
| 27 | minItems: 1 |
| 28 | maxItems: 32 |
| 29 | |
| 30 | interrupt-controller: true |
| 31 | |
| 32 | "#interrupt-cells": |
| 33 | const: 2 |
| 34 | |
| 35 | clocks: |
| 36 | maxItems: 1 |
| 37 | |
| 38 | "#gpio-cells": |
| 39 | const: 2 |
| 40 | |
| 41 | ngpios: |
| 42 | description: |
| 43 | The number of GPIOs available on the controller implementation. |
| 44 | It is 16 for the SiFive SoCs and 32 for the Canaan K210. |
| 45 | minimum: 1 |
| 46 | maximum: 32 |
| 47 | default: 16 |
| 48 | |
| 49 | gpio-line-names: |
| 50 | minItems: 1 |
| 51 | maxItems: 32 |
| 52 | |
| 53 | gpio-controller: true |
| 54 | |
| 55 | required: |
| 56 | - compatible |
| 57 | - reg |
| 58 | - interrupts |
| 59 | - interrupt-controller |
| 60 | - "#interrupt-cells" |
| 61 | - "#gpio-cells" |
| 62 | - gpio-controller |
| 63 | |
| 64 | if: |
| 65 | properties: |
| 66 | compatible: |
| 67 | contains: |
| 68 | enum: |
| 69 | - sifive,fu540-c000-gpio |
| 70 | - sifive,fu740-c000-gpio |
| 71 | then: |
| 72 | required: |
| 73 | - clocks |
| 74 | |
| 75 | additionalProperties: false |
| 76 | |
| 77 | examples: |
| 78 | - | |
| 79 | #include <dt-bindings/clock/sifive-fu540-prci.h> |
| 80 | gpio@10060000 { |
| 81 | compatible = "sifive,fu540-c000-gpio", "sifive,gpio0"; |
| 82 | interrupt-parent = <&plic>; |
| 83 | interrupts = <7>, <8>, <9>, <10>, <11>, <12>, <13>, <14>, <15>, <16>, |
| 84 | <17>, <18>, <19>, <20>, <21>, <22>; |
| 85 | reg = <0x10060000 0x1000>; |
| 86 | clocks = <&tlclk FU540_PRCI_CLK_TLCLK>; |
| 87 | gpio-controller; |
| 88 | #gpio-cells = <2>; |
| 89 | interrupt-controller; |
| 90 | #interrupt-cells = <2>; |
| 91 | }; |
| 92 | |
| 93 | ... |