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Diffstat (limited to 'Documentation/devicetree/bindings/dma/fsl,edma.yaml')
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diff --git a/Documentation/devicetree/bindings/dma/fsl,edma.yaml b/Documentation/devicetree/bindings/dma/fsl,edma.yaml new file mode 100644 index 000000000000..fa4248e2f1b9 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/fsl,edma.yaml @@ -0,0 +1,344 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/fsl,edma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale enhanced Direct Memory Access(eDMA) Controller + +description: | + The eDMA channels have multiplex capability by programmable + memory-mapped registers. channels are split into two groups, called + DMAMUX0 and DMAMUX1, specific DMA request source can only be multiplexed + by any channel of certain group, DMAMUX0 or DMAMUX1, but not both. + +maintainers: + - Peng Fan <peng.fan@nxp.com> + +properties: + compatible: + oneOf: + - enum: + - fsl,vf610-edma + - fsl,imx7ulp-edma + - fsl,imx8qm-edma + - fsl,imx8ulp-edma + - fsl,imx93-edma3 + - fsl,imx93-edma4 + - fsl,imx95-edma5 + - nxp,s32g2-edma + - items: + - enum: + - fsl,imx94-edma3 + - const: fsl,imx93-edma3 + - items: + - enum: + - fsl,imx94-edma5 + - const: fsl,imx95-edma5 + - items: + - const: fsl,ls1028a-edma + - const: fsl,vf610-edma + - items: + - const: nxp,s32g3-edma + - const: nxp,s32g2-edma + + reg: + minItems: 1 + maxItems: 3 + + interrupts: + minItems: 1 + maxItems: 65 + + interrupt-names: + minItems: 1 + maxItems: 65 + + "#dma-cells": + description: | + Specifies the number of cells needed to encode an DMA channel. + + Encode for cells number 2: + cell 0: index of dma channel mux instance. + cell 1: peripheral dma request id. + + Encode for cells number 3: + cell 0: peripheral dma request id. + cell 1: dma channel priority. + cell 2: bitmask, defined at include/dt-bindings/dma/fsl-edma.h + enum: + - 2 + - 3 + + dma-channels: + minimum: 1 + maximum: 64 + + clocks: + minItems: 1 + maxItems: 33 + + clock-names: + minItems: 1 + maxItems: 33 + + power-domains: + description: + The number of power domains matches the number of channels, arranged + in ascending order according to their associated DMA channels. + minItems: 1 + maxItems: 64 + + big-endian: + description: | + If present registers and hardware scatter/gather descriptors of the + eDMA are implemented in big endian mode, otherwise in little mode. + type: boolean + +required: + - "#dma-cells" + - compatible + - reg + - interrupts + - dma-channels + +allOf: + - $ref: dma-controller.yaml# + - if: + properties: + compatible: + contains: + enum: + - fsl,imx8qm-edma + - fsl,imx93-edma3 + - fsl,imx93-edma4 + - fsl,imx95-edma5 + then: + properties: + "#dma-cells": + const: 3 + # It is not necessary to write the interrupt name for each channel. + # instead, you can simply maintain the sequential IRQ numbers as + # defined for the DMA channels. + interrupt-names: false + clock-names: + items: + - const: dma + clocks: + maxItems: 1 + + - if: + properties: + compatible: + contains: + const: fsl,vf610-edma + then: + properties: + clocks: + minItems: 2 + maxItems: 2 + clock-names: + items: + - const: dmamux0 + - const: dmamux1 + interrupts: + minItems: 2 + maxItems: 2 + interrupt-names: + items: + - const: edma-tx + - const: edma-err + reg: + minItems: 2 + maxItems: 3 + "#dma-cells": + const: 2 + dma-channels: + const: 32 + + - if: + properties: + compatible: + contains: + const: fsl,imx7ulp-edma + then: + properties: + clock: + minItems: 2 + maxItems: 2 + clock-names: + items: + - const: dma + - const: dmamux0 + interrupts: + minItems: 2 + maxItems: 17 + reg: + minItems: 2 + maxItems: 2 + "#dma-cells": + const: 2 + dma-channels: + const: 32 + + - if: + properties: + compatible: + contains: + const: fsl,imx8ulp-edma + then: + properties: + clocks: + minItems: 33 + clock-names: + minItems: 33 + items: + oneOf: + - const: dma + - pattern: "^ch(0[0-9]|[1-2][0-9]|3[01])$" + + interrupt-names: false + interrupts: + minItems: 32 + "#dma-cells": + const: 3 + + - if: + properties: + compatible: + contains: + enum: + - fsl,vf610-edma + - fsl,imx7ulp-edma + - fsl,imx93-edma3 + - fsl,imx93-edma4 + - fsl,imx95-edma5 + - fsl,imx8ulp-edma + - fsl,ls1028a-edma + then: + required: + - clocks + + - if: + properties: + compatible: + contains: + enum: + - fsl,imx8qm-adma + - fsl,imx8qm-edma + then: + required: + - power-domains + else: + properties: + power-domains: false + + - if: + properties: + compatible: + contains: + const: nxp,s32g2-edma + then: + properties: + clocks: + minItems: 2 + maxItems: 2 + clock-names: + items: + - const: dmamux0 + - const: dmamux1 + interrupts: + minItems: 3 + maxItems: 3 + interrupt-names: + items: + - const: tx-0-15 + - const: tx-16-31 + - const: err + reg: + minItems: 3 + maxItems: 3 + "#dma-cells": + const: 2 + dma-channels: + const: 32 + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/vf610-clock.h> + + edma0: dma-controller@40018000 { + #dma-cells = <2>; + compatible = "fsl,vf610-edma"; + reg = <0x40018000 0x2000>, + <0x40024000 0x1000>, + <0x40025000 0x1000>; + interrupts = <0 8 IRQ_TYPE_LEVEL_HIGH>, + <0 9 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "edma-tx", "edma-err"; + dma-channels = <32>; + clock-names = "dmamux0", "dmamux1"; + clocks = <&clks VF610_CLK_DMAMUX0>, <&clks VF610_CLK_DMAMUX1>; + }; + + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/imx7ulp-clock.h> + + edma1: dma-controller@40080000 { + #dma-cells = <2>; + compatible = "fsl,imx7ulp-edma"; + reg = <0x40080000 0x2000>, + <0x40210000 0x1000>; + dma-channels = <32>; + interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>, + /* last is eDMA2-ERR interrupt */ + <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>; + clock-names = "dma", "dmamux0"; + clocks = <&pcc2 IMX7ULP_CLK_DMA1>, <&pcc2 IMX7ULP_CLK_DMA_MUX1>; + }; + + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/firmware/imx/rsrc.h> + + dma-controller@5a9f0000 { + compatible = "fsl,imx8qm-edma"; + reg = <0x5a9f0000 0x90000>; + #dma-cells = <3>; + dma-channels = <8>; + interrupts = <GIC_SPI 424 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 425 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 426 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 427 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 428 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 429 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 430 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 431 IRQ_TYPE_LEVEL_HIGH>; + power-domains = <&pd IMX_SC_R_DMA_3_CH0>, + <&pd IMX_SC_R_DMA_3_CH1>, + <&pd IMX_SC_R_DMA_3_CH2>, + <&pd IMX_SC_R_DMA_3_CH3>, + <&pd IMX_SC_R_DMA_3_CH4>, + <&pd IMX_SC_R_DMA_3_CH5>, + <&pd IMX_SC_R_DMA_3_CH6>, + <&pd IMX_SC_R_DMA_3_CH7>; + }; |