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QNX SDP 8.0 BSP Documentation
The board support package (BSP) documentation includes user guides that describe how to work with the BSPs provided for the QNX Software Development Platform (SDP) 8.0, and release notes that describe the supported features and hardware as well as any known issues for each BSP.
AMD
Xilinx Zynq UltraScale+ MPSoC KR260
User's Guide
BSP-specific Drivers and Utilities
i2c-xzynq
Driver for inter-integrated circuits for the Xilinx KD240.

QNX SDP 8.0 BSP Documentation
The board support package (BSP) documentation includes user guides that describe how to work with the BSPs provided for the QNX Software Development Platform (SDP) 8.0, and release notes that describe the supported features and hardware as well as any known issues for each BSP.
- AMD
  - Xilinx Zynq UltraScale+ MPSoC KD240
  - Xilinx Zynq UltraScale+ MPSoC KR260
    - Release Notes
    - User's Guide
      - Before You Begin
        Before you begin working with this BSP you should become familiar with the resources available to you when building QNX embedded systems.
      - About This BSP
        This chapter lists what's included in the BSP, the supported host system operating systems, and other relevant information to use this BSP.
      - Installation Notes
        These installation notes describe how to use this BSP to boot your board with the QNX OS.
      - Build the BSP
        You can use the QNX Momentics IDE or the commandline on Linux or Windows to build an image.
      - Driver Commands
        The tables below provide a summary of driver commands.
      - BSP-specific Drivers and Utilities
        clock-xzynq
        Clock driver for the Xilinx KD240.
        devc-serxzynq
        Serial driver for UltraScale+ MPSoC UARTs.
        devf-xzynq-qspi
        Driver for the QSPI Flash memory for the Xilinx KD240.
        devu-hcd-xzynq-xhci.so
        Driver for Extensible Host Controller Interface (XHCI) USB controllers for the Xilinx KD240.
        i2c-xzynq
        Driver for inter-integrated circuits for the Xilinx KD240.
        spi-xzynq-ultrascale
        SPI driver on the Xilinx KD240.
  - Xilinx Zynq UltraScale+ MPSoC KV260
- Broadcom
- Intel
- NXP
- Texas Instruments
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

i2c-xzynq

Driver for inter-integrated circuits for the Xilinx KR260.

Syntax:

i2c-xzynq [zynq_options [zynq_options]...]
           [generic_option [generic option]...]

Runs on:

QNX OS

Options:

There are Zynq-specific (single-dash) and generic (double-dash) options available.

CAUTION:

Zynq-specific options must always appear before generic options, otherwise the driver fails to initialize. For example, the correct sequence would as follows:

i2c-xzynq -v --u0

However, if you incorrectly issue the command in the wrong sequence as shown here, it will fail:

i2c-xzynq --u0 -v

Zynq-specific options:

These are Xilinx Zynq-specific drivers.

-c clock: Input clock (Hz).
-C clock: Don't attempt to get or set the I2Cx_REF_CLK frequency from hardware. Instead, leave the clock registers as-is and use this clock value (Hz) when calculating the I2C bus speed divisors. Note: Use this option only if the driver fails to get or set the correct frequency of I2Cx_REF_CLK when using the -c clockoption.
-i irq: The default IRQ is 50.
-p address: Base address of the controller. The default address is 0xFF030000.
-v level: Set the verbosity level. The default is 0 (zero).

Generic options:

These are the generic options for the driver.

--b bus_speed: The default bus speed. Default is 100000.
--u unit: The unit number, which is the number to append to device name prefix (e.g., /dev/i2c). The default to use is 0 (zero).

Example:

Specify a base of address 0xFF030000 with an IRQ of 50:

i2c-xzynq –p 0xFF030000 -i 50

Page updated: September 26, 2025