This is homebrew formula for fxload utility from linux-hotplug project, originally ported to macOS by Ron Nall and updated to be built on recent macOS versions by Vadim Kolontsov.
Usually fxload is used to upload firmware to Cypress EZ-USB FX/FX2 microcontrollers.
Since this formula isn't part of Homebrew, add it as tap first:
brew tap kolontsov/fxload
To install the latest stable release:
brew install fxload