| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/dma/qcom,gpi.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Qualcomm Technologies Inc GPI DMA controller |
| |
| maintainers: |
| - Vinod Koul <vkoul@kernel.org> |
| |
| description: | |
| QCOM GPI DMA controller provides DMA capabilities for |
| peripheral buses such as I2C, UART, and SPI. |
| |
| allOf: |
| - $ref: dma-controller.yaml# |
| |
| properties: |
| compatible: |
| oneOf: |
| - enum: |
| - qcom,sdm845-gpi-dma |
| - qcom,sm6350-gpi-dma |
| - items: |
| - enum: |
| - qcom,qcm2290-gpi-dma |
| - qcom,qdu1000-gpi-dma |
| - qcom,sc7280-gpi-dma |
| - qcom,sm6115-gpi-dma |
| - qcom,sm6375-gpi-dma |
| - qcom,sm8350-gpi-dma |
| - qcom,sm8450-gpi-dma |
| - qcom,sm8550-gpi-dma |
| - const: qcom,sm6350-gpi-dma |
| - items: |
| - enum: |
| - qcom,sdm670-gpi-dma |
| - qcom,sm6125-gpi-dma |
| - qcom,sm8150-gpi-dma |
| - qcom,sm8250-gpi-dma |
| - const: qcom,sdm845-gpi-dma |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| description: |
| Interrupt lines for each GPI instance |
| minItems: 1 |
| maxItems: 13 |
| |
| "#dma-cells": |
| const: 3 |
| description: > |
| DMA clients must use the format described in dma.txt, giving a phandle |
| to the DMA controller plus the following 3 integer cells: |
| - channel: if set to 0xffffffff, any available channel will be allocated |
| for the client. Otherwise, the exact channel specified will be used. |
| - seid: serial id of the client as defined in the SoC documentation. |
| - client: type of the client as defined in dt-bindings/dma/qcom-gpi.h |
| |
| iommus: |
| maxItems: 1 |
| |
| dma-channels: |
| maximum: 31 |
| |
| dma-channel-mask: |
| maxItems: 1 |
| |
| dma-coherent: true |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - "#dma-cells" |
| - iommus |
| - dma-channels |
| - dma-channel-mask |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| #include <dt-bindings/dma/qcom-gpi.h> |
| gpi_dma0: dma-controller@800000 { |
| compatible = "qcom,sdm845-gpi-dma"; |
| #dma-cells = <3>; |
| reg = <0x00800000 0x60000>; |
| iommus = <&apps_smmu 0x0016 0x0>; |
| dma-channels = <13>; |
| dma-channel-mask = <0xfa>; |
| interrupts = <GIC_SPI 244 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 246 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 247 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 249 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 250 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 252 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 253 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 254 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 255 IRQ_TYPE_LEVEL_HIGH>, |
| <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>; |
| }; |
| |
| ... |
