Reported issues with workaround, fixes, and schedule


Known issues on the phyCORE-i.MX7 Development Kit.

Processor Silicon Revision Errata

Silicon Rev 1.3

The phyCORE-i.MX7 Development Kits are using NXP's Silicon Revision 1.3.  Below is a list of errata from NXP, which will be addressed in future silicon revisions.

phyCORE-i.MX7 Development Kit

Open Hardware and Software Issues

IDInterfaceAffected HW VersionAffected SW VersionDetails


Planned Fix


Node.js with GreengrassN/ABSP-Yocto-FSL-iMX7-PD19.1.0

The Node.js v6.10 package can't be found by Greengrass with its current package name. 

From the Linux command prompt create a symbolic link pointing to the path/version. This can be done with the following command:

ln -s /usr/bin/node /usr/bin/nodejs6.1


JavaN/ABSP-Yocto-FSL-iMX7-PD19.1.0Java is experiencing runtime errorsTBD


EthernetN/ABSP-Yocto-FSL-iMX7-PD19.1.0iperf3 is included with this BSP. With UDP, this command reports much lower bandwidth than expected when compared with the same test using iperf.TBD


eMMCN/ABSP-Yocto-FSL-iMX7-PD19.1.0HS400 warnings/errors.

Configure eMMC to run at maximum 100MHz as a work around.

See commit b8f6c1b7780 for more information


Linux IMX Busfreq DriverN/ABSP-Yocto-FSL-iMX7-PD19.1.0

Bus frequency scaling is disabled by default.

Two options exist for working around this issue:

  • For dynamic bus frequency scaling and improved power consumption, the busfreq driver can be enabled in the device tree by removing the "fsl,freq_scaling_disabled" property in imx7-phycore-som.dtsi.
  • For dynamic bus frequency scaling and improved power consumption, 
    control the bus via sysfs: 

    echo 1 > /sys/bus/platform/drivers/imx_busfreq/soc\:busfreq/enable

Planned to be re-enabled by default in the next BSP release.

Open Software Issues from NXP

Linux 4.14.78_1.0.0 BSP Documentation

Resolved Hardware and Software Issues

IDInterfaceComponentDetailsResolved in HW Version