Linux Kernel Fails to Associate Driver Under 2018.3 Due to IP Version Number Change

[esorton]

Xilinx updated the AXI Stream FIFO IP in Vivado 2018.3. The version number bumped from 4.1 to 4.2.

The change log at https://www.xilinx.com/support/answers/71806.html lists the changes as:

AXI-Stream FIFO (4.2)

• Version 4.2
• Feature Enhancement: FIFO generator replaced with XPM.
• Feature Enhancement: Default values for FIFO_PE_THRESHOLD parameters changed to 5.
• Revision change in one or more subcores

[esorton]

Updating compatible version from 4.1 to 4.2 corrected the issue for me.

static const struct of_device_id axis_fifo_of_match[] = {
        { .compatible = "xlnx,axi-fifo-mm-s-4.2", },
        {},
};

[jacobfeder]

Could you submit this as a pull request?

Thanks!

[esorton]

I will. Need to do a bit of research to determine the format of the ".compatible" field to support both 4.1 and 4.2 versions.

[jacobfeder]

Thanks! Appreciate it.