ReSpeaker 4-Mic Array

Hello,

I want to use the Respeaker 4-mic array with a jetson nano but I have the following queries:

  1. The 2mic hat has a driver to run with jetson nano. Is there a driver for the 4 mic array and jetson nano?
  2. I have other sensors interfaced with the nano as well so I do not want to dedicate the complete 40 pin GPIO to the array. Which connections or pins are essential for the complete array to work. From the FAQ I see I2S is needed for sound, I2c for control data and SPI for led control. I am assuming we need to more pins for power and ground. Are there any other pins we need or can we just use these pins to achieve all functionality
  3. does the Respeaker 4 allow for direction of arrival detection?

Thank you