diff options
Diffstat (limited to 'dts/Bindings/dma')
| -rw-r--r-- | dts/Bindings/dma/atmel-xdma.txt | 54 | ||||
| -rw-r--r-- | dts/Bindings/dma/fsl-imx-sdma.txt | 1 | ||||
| -rw-r--r-- | dts/Bindings/dma/qcom_bam_dma.txt | 4 | ||||
| -rw-r--r-- | dts/Bindings/dma/sun6i-dma.txt | 2 | ||||
| -rw-r--r-- | dts/Bindings/dma/xilinx/xilinx_vdma.txt | 2 |
5 files changed, 60 insertions, 3 deletions
diff --git a/dts/Bindings/dma/atmel-xdma.txt b/dts/Bindings/dma/atmel-xdma.txt new file mode 100644 index 0000000000..0eb2b3207e --- /dev/null +++ b/dts/Bindings/dma/atmel-xdma.txt @@ -0,0 +1,54 @@ +* Atmel Extensible Direct Memory Access Controller (XDMAC) + +* XDMA Controller +Required properties: +- compatible: Should be "atmel,<chip>-dma". + <chip> compatible description: + - sama5d4: first SoC adding the XDMAC +- reg: Should contain DMA registers location and length. +- interrupts: Should contain DMA interrupt. +- #dma-cells: Must be <1>, used to represent the number of integer cells in +the dmas property of client devices. + - The 1st cell specifies the channel configuration register: + - bit 13: SIF, source interface identifier, used to get the memory + interface identifier, + - bit 14: DIF, destination interface identifier, used to get the peripheral + interface identifier, + - bit 30-24: PERID, peripheral identifier. + +Example: + +dma1: dma-controller@f0004000 { + compatible = "atmel,sama5d4-dma"; + reg = <0xf0004000 0x200>; + interrupts = <50 4 0>; + #dma-cells = <1>; +}; + + +* DMA clients +DMA clients connected to the Atmel XDMA controller must use the format +described in the dma.txt file, using a one-cell specifier for each channel. +The two cells in order are: +1. A phandle pointing to the DMA controller. +2. Channel configuration register. Configurable fields are: + - bit 13: SIF, source interface identifier, used to get the memory + interface identifier, + - bit 14: DIF, destination interface identifier, used to get the peripheral + interface identifier, + - bit 30-24: PERID, peripheral identifier. + +Example: + +i2c2: i2c@f8024000 { + compatible = "atmel,at91sam9x5-i2c"; + reg = <0xf8024000 0x4000>; + interrupts = <34 4 6>; + dmas = <&dma1 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) + | AT91_XDMAC_DT_PERID(6))>, + <&dma1 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) + | AT91_XDMAC_DT_PERID(7))>; + dma-names = "tx", "rx"; +}; diff --git a/dts/Bindings/dma/fsl-imx-sdma.txt b/dts/Bindings/dma/fsl-imx-sdma.txt index 4659fd9523..dc8d3aac1a 100644 --- a/dts/Bindings/dma/fsl-imx-sdma.txt +++ b/dts/Bindings/dma/fsl-imx-sdma.txt @@ -48,6 +48,7 @@ The full ID of peripheral types can be found below. 21 ESAI 22 SSI Dual FIFO (needs firmware ver >= 2) 23 Shared ASRC + 24 SAI The third cell specifies the transfer priority as below. diff --git a/dts/Bindings/dma/qcom_bam_dma.txt b/dts/Bindings/dma/qcom_bam_dma.txt index d75a9d7670..f8c3311b71 100644 --- a/dts/Bindings/dma/qcom_bam_dma.txt +++ b/dts/Bindings/dma/qcom_bam_dma.txt @@ -1,7 +1,9 @@ QCOM BAM DMA controller Required properties: -- compatible: must contain "qcom,bam-v1.4.0" for MSM8974 +- compatible: must be one of the following: + * "qcom,bam-v1.4.0" for MSM8974, APQ8074 and APQ8084 + * "qcom,bam-v1.3.0" for APQ8064, IPQ8064 and MSM8960 - reg: Address range for DMA registers - interrupts: Should contain the one interrupt shared by all channels - #dma-cells: must be <1>, the cell in the dmas property of the client device diff --git a/dts/Bindings/dma/sun6i-dma.txt b/dts/Bindings/dma/sun6i-dma.txt index 3e145c1675..9cdcba24d7 100644 --- a/dts/Bindings/dma/sun6i-dma.txt +++ b/dts/Bindings/dma/sun6i-dma.txt @@ -4,7 +4,7 @@ This driver follows the generic DMA bindings defined in dma.txt. Required properties: -- compatible: Must be "allwinner,sun6i-a31-dma" +- compatible: Must be "allwinner,sun6i-a31-dma" or "allwinner,sun8i-a23-dma" - reg: Should contain the registers base address and length - interrupts: Should contain a reference to the interrupt used by this device - clocks: Should contain a reference to the parent AHB clock diff --git a/dts/Bindings/dma/xilinx/xilinx_vdma.txt b/dts/Bindings/dma/xilinx/xilinx_vdma.txt index 1405ed071b..e4c4d47f81 100644 --- a/dts/Bindings/dma/xilinx/xilinx_vdma.txt +++ b/dts/Bindings/dma/xilinx/xilinx_vdma.txt @@ -25,7 +25,7 @@ Required child node properties: - compatible: It should be either "xlnx,axi-vdma-mm2s-channel" or "xlnx,axi-vdma-s2mm-channel". - interrupts: Should contain per channel VDMA interrupts. -- xlnx,data-width: Should contain the stream data width, take values +- xlnx,datawidth: Should contain the stream data width, take values {32,64...1024}. Optional child node properties: |