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charset="utf-8" From: Suraj Gupta Add an optional boolean DT property "xlnx,include-stscntrl-strm" to indicate that the AXI DMA IP is configured with the AXI4-Stream status and control interface. This enables the use of APP fields in DMA descriptors for metadata reporting. This property is distinct from "xlnx,axistream-connected" and serves a different purpose: - "xlnx,include-stscntrl-strm": Indicates whether APP fields are present in DMA descriptors. When enabled, the driver can access status/control metadata through these descriptor fields. - "xlnx,axistream-connected": Indicates whether a streaming IP (client) is connected to the DMA IP. These two configurations are independent of each other. For example, in TSN (Time-Sensitive Networking) designs, a streaming client may be connected to the DMA IP, but the status/control stream interface is not enabled. In such cases, "xlnx,axistream-connected" would be present while "xlnx,include-stscntrl-strm" would be absent. Adding this property allows the driver to correctly determine descriptor layout and access APP fields only when the hardware supports them. Signed-off-by: Suraj Gupta Signed-off-by: Srinivas Neeli --- Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt b/= Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt index cab66742e168..e72f1bb5a520 100644 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt @@ -56,6 +56,8 @@ Optional properties for AXI DMA and MCDMA: AXI stream IP. =20 Optional properties for AXI DMA: +- xlnx,include-stscntrl-strm: Tells hardware is configured with AXI4-stream + status and control interface. Optional properties for VDMA: - xlnx,flush-fsync: Tells which channel to Flush on Frame sync. It takes following values: --=20 2.25.1