• ADI JESD204B Transmit Peripheral

The AXI JESD204B TX peripheral driver is a simple driver that supports the ADI JESD204B Transmit Peripheral. The driver reads JESD204B link configuration data from the devicetree and configures the peripheral accordingly. After configuration has completed the JESD204B link is enabled. Link state can be monitored through sysfs files.

___ Where do we drop code files ? ___

The AXI JESD204B driver is a platform driver and can currently only be instantiated via device tree.

Required devicetree properties:

• compatible: Must always be "adi,axi-jesd204-tx-1.00.a"
• reg: Base address and register area size. This parameter expects a register range.
• interrupts: Property with a value describing the interrupt number.
• clock-names: List of input clock names - "s_axi_aclk", "device_clk"
• clocks: Clock phandles and specifiers (See clock bindings for details on clock-names and clocks).
• adi,frames-per-multiframe: Number of frames per multi-frame (K)
• adi,octets-per-frame: Number of octets per frame (N)

Optional devicetree properties:

• adi,high-density: If specified the JESD204B link is configured for high density (HD) operation.

Example:

		jesd204b-tx@77a00000 {
			compatible = "adi,axi-jesd204-tx-1.00.a";
			reg = <0x77a00000 0x10000>;
			interrupts = <0 56 4>;

			clock-names = "s_axi_aclk", "device_clk";
			clocks = <&clkc 14>, <&ad9528 13>;

			adi,octets-per-frame = <32>;
			adi,frames-per-multiframe = <4>;
		};

Configure kernel with "make menuconfig" (alternatively use "make xconfig" or "make qconfig")

Linux Kernel Configuration
	Device Drivers  --->
	<*>     Industrial I/O support --->
	    --- Industrial I/O support
	    -*-   Enable ring buffer support within IIO
	    -*-     Industrial I/O lock free software ring
	    -*-   Enable triggered sampling support

            <*>   JESD204 High-Speed Serial Interface Support  --->
	    [--snip--]
		<*>   Analog Devices AXI JESD204B TX Support
	    [--snip--]

Return to JESD204B Interface Framework

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