diff options
Diffstat (limited to 'Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt index 325aca52cd43..590d1948f202 100644 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt @@ -49,6 +49,12 @@ Optional properties for AXI DMA and MCDMA: register as configured in h/w. Takes values {8...26}. If the property is missing or invalid then the default value 23 is used. This is the maximum value that is supported by all IP versions. + +Optional properties for AXI DMA: +- xlnx,axistream-connected: Tells whether DMA is connected to AXI stream IP. +- xlnx,irq-delay: Tells the interrupt delay timeout value. Valid range is from + 0-255. Setting this value to zero disables the delay timer interrupt. + 1 timeout interval = 125 * clock period of SG clock. Optional properties for VDMA: - xlnx,flush-fsync: Tells which channel to Flush on Frame sync. It takes following values: @@ -110,7 +116,11 @@ axi_vdma_0: axivdma@40030000 { Required properties: - dmas: a list of <[Video DMA device phandle] [Channel ID]> pairs, where Channel ID is '0' for write/tx and '1' for read/rx - channel. + channel. For MCMDA, MM2S channel(write/tx) ID start from + '0' and is in [0-15] range. S2MM channel(read/rx) ID start + from '16' and is in [16-31] range. These channels ID are + fixed irrespective of IP configuration. + - dma-names: a list of DMA channel names, one per "dmas" entry Example: |