GXL

[dsx724]

1. Lock CPU Frequency sudo cpufreq-set -f 1GHz
2. Isolate CPUs 1, 2, and 3 and Assign Task via taskset -c
3. Disable nohz via cmdline by adding nohz=off to /etc/default/grub
4. Use a Schmitt-Trigger Inverter to handle level shifting, signal conditioning, and inversion for UART.

[guysoft]

What is this list?

[dsx724]

@guysoft This is the setup requirements for GXL based platforms including S805X, S905X, S905D. As Linux is not an RTOS, scheduling and context switching can result in UART buffer underrun which would cause glitching of the LEDs. The instructions here are requirements for glitch-free operation of the LEDs. The last one is an external hardware requirement for cleaning up the waveforms since LED signal has non-trivial capacitance.