| Tom Rini | 6bb92fc | 2024-05-20 09:54:58 -0600 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/interrupt-controller/atmel,aic.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Advanced Interrupt Controller (AIC) |
| 8 | |
| 9 | maintainers: |
| 10 | - Nicolas Ferre <nicolas.ferre@microchip.com> |
| 11 | - Dharma balasubiramani <dharma.b@microchip.com> |
| 12 | |
| 13 | description: |
| 14 | The Advanced Interrupt Controller (AIC) is an 8-level priority, individually |
| 15 | maskable, vectored interrupt controller providing handling of up to one |
| 16 | hundred and twenty-eight interrupt sources. |
| 17 | |
| 18 | properties: |
| 19 | compatible: |
| 20 | enum: |
| 21 | - atmel,at91rm9200-aic |
| 22 | - atmel,sama5d2-aic |
| 23 | - atmel,sama5d3-aic |
| 24 | - atmel,sama5d4-aic |
| 25 | - microchip,sam9x60-aic |
| 26 | |
| 27 | reg: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | interrupt-controller: true |
| 31 | |
| 32 | "#interrupt-cells": |
| 33 | const: 3 |
| 34 | description: | |
| 35 | The 1st cell is the IRQ number (Peripheral IDentifier on datasheet). |
| 36 | The 2nd cell specifies flags: |
| 37 | bits[3:0] trigger type and level flags: |
| 38 | 1 = low-to-high edge triggered. |
| 39 | 2 = high-to-low edge triggered. |
| 40 | 4 = active high level-sensitive. |
| 41 | 8 = active low level-sensitive. |
| 42 | Valid combinations: 1, 2, 3, 4, 8. |
| 43 | Default for internal sources: 4 (active high). |
| 44 | The 3rd cell specifies irq priority from 0 (lowest) to 7 (highest). |
| 45 | |
| 46 | interrupts: |
| 47 | maxItems: 1 |
| 48 | |
| 49 | atmel,external-irqs: |
| 50 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 51 | description: u32 array of external irqs. |
| 52 | |
| 53 | allOf: |
| 54 | - $ref: /schemas/interrupt-controller.yaml# |
| 55 | - if: |
| 56 | properties: |
| 57 | compatible: |
| 58 | contains: |
| 59 | const: atmel,at91rm9200-aic |
| 60 | then: |
| 61 | properties: |
| 62 | atmel,external-irqs: |
| 63 | minItems: 1 |
| 64 | maxItems: 7 |
| 65 | else: |
| 66 | properties: |
| 67 | atmel,external-irqs: |
| 68 | minItems: 1 |
| 69 | maxItems: 1 |
| 70 | |
| 71 | required: |
| 72 | - compatible |
| 73 | - reg |
| 74 | - interrupt-controller |
| 75 | - "#interrupt-cells" |
| 76 | - atmel,external-irqs |
| 77 | |
| 78 | unevaluatedProperties: false |
| 79 | |
| 80 | examples: |
| 81 | - | |
| 82 | interrupt-controller@fffff000 { |
| 83 | compatible = "atmel,at91rm9200-aic"; |
| 84 | reg = <0xfffff000 0x200>; |
| 85 | interrupt-controller; |
| 86 | #interrupt-cells = <3>; |
| 87 | atmel,external-irqs = <31>; |
| 88 | }; |
| 89 | ... |