Apple's Audio DMA Controller (ADMAC) is used to fetch and store audio samples on Apple SoCs from the "Apple Silicon" family. Signed-off-by: Martin Povišer <povik+lin@xxxxxxxxxxx> --- .../devicetree/bindings/dma/apple,admac.yaml | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/apple,admac.yaml diff --git a/Documentation/devicetree/bindings/dma/apple,admac.yaml b/Documentation/devicetree/bindings/dma/apple,admac.yaml new file mode 100644 index 000000000000..34f76a9a2983 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/apple,admac.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/apple,admac.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple Audio DMA Controller (ADMAC) + +description: | + Apple's Audio DMA Controller (ADMAC) is used to fetch and store + audio samples on Apple SoCs from the "Apple Silicon" family. + +maintainers: + - Martin Povišer <povik+lin@xxxxxxxxxxx> + +allOf: + - $ref: "dma-controller.yaml#" + +properties: + compatible: + items: + - enum: + - apple,t6000-admac + - apple,t8103-admac + - const: apple,admac + + reg: + maxItems: 1 + + '#dma-cells': + const: 1 + + apple,internal-irq-destination: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Index influencing internal routing of the IRQs + within the peripheral. + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - '#dma-cells' + - dma-channels + - apple,internal-irq-destination + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/apple-aic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + dart_sio: iommu@235004000 { + compatible = "apple,t8103-dart", "apple,dart"; + reg = <0x2 0x35004000 0x0 0x4000>; + interrupt-parent = <&aic>; + interrupts = <AIC_IRQ 635 IRQ_TYPE_LEVEL_HIGH>; + #iommu-cells = <1>; + }; + + admac: dma-controller@238200000 { + compatible = "apple,t8103-admac", "apple,admac"; + reg = <0x2 0x38200000 0x0 0x34000>; + dma-channels = <12>; + interrupt-parent = <&aic>; + interrupts = <AIC_IRQ 626 IRQ_TYPE_LEVEL_HIGH>; + #dma-cells = <1>; + iommus = <&dart_sio 2>; + apple,internal-irq-destination = <1>; + }; -- 2.33.0
