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Diffstat (limited to 'Documentation/devicetree/bindings/dma/qcom,gpi.yaml')
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1 files changed, 109 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/qcom,gpi.yaml b/Documentation/devicetree/bindings/dma/qcom,gpi.yaml new file mode 100644 index 0000000000..f61145c91b --- /dev/null +++ b/Documentation/devicetree/bindings/dma/qcom,gpi.yaml @@ -0,0 +1,109 @@ +# 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 + +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>; + }; + +... |