For those curious about pin muxing on the Raspberry Pi compute module, they have traditionally had to use the BCM2835 Arm Peripherals document provided by the RPi Foundation. This document is no longer current as recently more functionality has been revealed. I have created a Google doc with this new information. It should be publicly editable so feel free to update it with any additional information you find. It would be appreciated if you documented the official source of the information you change
Today I added information related to DPI functionality on GPIO 0-27 and the SD1 functionality on GPIO 34-39.
Edit 1: I added information using the current values of raspi-gpio funcs