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1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause2%YAML 1.23---4$id: http://devicetree.org/schemas/dma/apple,admac.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Apple Audio DMA Controller (ADMAC)8 9description: |10 Apple's Audio DMA Controller (ADMAC) is used to fetch and store audio samples11 on SoCs from the "Apple Silicon" family.12 13 The controller has been seen with up to 24 channels. Even-numbered channels14 are TX-only, odd-numbered are RX-only. Individual channels are coupled to15 fixed device endpoints.16 17maintainers:18 - Martin Povišer <povik+lin@cutebit.org>19 20allOf:21 - $ref: dma-controller.yaml#22 23properties:24 compatible:25 items:26 - enum:27 - apple,t6000-admac28 - apple,t8103-admac29 - apple,t8112-admac30 - const: apple,admac31 32 reg:33 maxItems: 134 35 '#dma-cells':36 const: 137 description:38 Clients specify a single cell with channel number.39 40 dma-channels:41 maximum: 2442 43 interrupts:44 minItems: 445 maxItems: 446 description:47 Interrupts that correspond to the 4 IRQ outputs of the controller. Usually48 only one of the controller outputs will be connected as an usable interrupt49 source. The remaining interrupts will be left without a valid value, e.g.50 in an interrupts-extended list the disconnected positions will contain51 an empty phandle reference <0>.52 53 iommus:54 minItems: 155 maxItems: 256 57 power-domains:58 maxItems: 159 60 resets:61 maxItems: 162 63required:64 - compatible65 - reg66 - '#dma-cells'67 - dma-channels68 - interrupts69 70additionalProperties: false71 72examples:73 - |74 #include <dt-bindings/interrupt-controller/apple-aic.h>75 #include <dt-bindings/interrupt-controller/irq.h>76 77 aic: interrupt-controller {78 interrupt-controller;79 #interrupt-cells = <3>;80 };81 82 admac: dma-controller@238200000 {83 compatible = "apple,t8103-admac", "apple,admac";84 reg = <0x38200000 0x34000>;85 dma-channels = <24>;86 interrupts-extended = <0>,87 <&aic AIC_IRQ 626 IRQ_TYPE_LEVEL_HIGH>,88 <0>,89 <0>;90 #dma-cells = <1>;91 };92