Article ID: 000085058 Content Type: Troubleshooting Last Reviewed: 06/06/2013

Golden System Reference Design Provides Access to Nonexistent I2C Controller

Environment

  • Quartus® II Subscription Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT

    Critical Issue

    Description

    When the Golden System Reference Design runs on the Cyclone V SoC FPGA Development Board, the Linux device tree is populated with two I2C controllers: /dev/i2c-0 and /dev/i2c-1. However, only /dev/i2c-0 is physically available on the development board.

    Resolution

    When running the Golden System Reference Design on the Cyclone V SoC FPGA Development Board, do not use the /dev/i2c-1 device with the Linux 13.02 release.

    To prevent Linux applications from attempting to access /dev/i2c-1, you can perform the following steps:

    1. Update the device tree file to remove or disable the /dev/i2c-1 device.
    2. Compile the device tree.
    3. Replace the default device tree with the new device tree.

    Related Products

    This article applies to 1 products

    Cyclone® V FPGAs and SoC FPGAs

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