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88 lines
2.4 KiB
88 lines
2.4 KiB
# 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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$id: http://devicetree.org/schemas/dma/qcom,gpi.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Qualcomm Technologies Inc GPI DMA controller |
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maintainers: |
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- Vinod Koul <[email protected]> |
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description: | |
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QCOM GPI DMA controller provides DMA capabilities for |
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peripheral buses such as I2C, UART, and SPI. |
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allOf: |
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- $ref: "dma-controller.yaml#" |
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properties: |
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compatible: |
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enum: |
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- qcom,sdm845-gpi-dma |
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reg: |
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maxItems: 1 |
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interrupts: |
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description: |
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Interrupt lines for each GPI instance |
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maxItems: 13 |
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"#dma-cells": |
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const: 3 |
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description: > |
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DMA clients must use the format described in dma.txt, giving a phandle |
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to the DMA controller plus the following 3 integer cells: |
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- channel: if set to 0xffffffff, any available channel will be allocated |
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for the client. Otherwise, the exact channel specified will be used. |
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- seid: serial id of the client as defined in the SoC documentation. |
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- client: type of the client as defined in dt-bindings/dma/qcom-gpi.h |
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iommus: |
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maxItems: 1 |
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dma-channels: |
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maximum: 31 |
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dma-channel-mask: |
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maxItems: 1 |
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required: |
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- compatible |
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- reg |
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- interrupts |
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- "#dma-cells" |
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- iommus |
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- dma-channels |
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- dma-channel-mask |
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additionalProperties: false |
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examples: |
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- | |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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#include <dt-bindings/dma/qcom-gpi.h> |
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gpi_dma0: dma-controller@800000 { |
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compatible = "qcom,gpi-dma"; |
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#dma-cells = <3>; |
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reg = <0x00800000 0x60000>; |
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iommus = <&apps_smmu 0x0016 0x0>; |
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dma-channels = <13>; |
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dma-channel-mask = <0xfa>; |
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interrupts = <GIC_SPI 244 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 246 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 247 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 249 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 250 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 252 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 253 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 254 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 255 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>; |
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}; |
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...
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