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def1baeb25
LPC32XX SoCs use pl080 dma controller which have few request signals multiplexed between peripherals. This binding describes how devices can use the multiplexed request signals. Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk@timesys.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240627150046.258795-3-piotr.wojtaszczyk@timesys.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
50 lines
996 B
YAML
50 lines
996 B
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/dma/nxp,lpc3220-dmamux.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: DMA multiplexer for LPC32XX SoC (DMA request router)
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maintainers:
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- J.M.B. Downing <jonathan.downing@nautel.com>
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- Piotr Wojtaszczyk <piotr.wojtaszczyk@timesys.com>
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allOf:
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- $ref: dma-router.yaml#
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properties:
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compatible:
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const: nxp,lpc3220-dmamux
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reg:
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maxItems: 1
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dma-masters:
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description: phandle to a dma node compatible with arm,pl080
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maxItems: 1
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"#dma-cells":
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const: 3
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description: |
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First two cells same as for device pointed in dma-masters.
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Third cell represents mux value for the request.
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required:
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- compatible
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- reg
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- dma-masters
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additionalProperties: false
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examples:
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- |
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dma-router@7c {
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compatible = "nxp,lpc3220-dmamux";
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reg = <0x7c 0x8>;
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dma-masters = <&dma>;
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#dma-cells = <3>;
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};
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...
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