We have had the pleasure to use your forums to clear a lot of road blocks while adapting and bringing up the jetson nano on our custom carrier board. There is one issue that we have been hitting our head on for a long time, but didn’t find a solution.
So, we are also using 2 camera ports on our custom carrier board. But instead of driving the cam-mux pin through a GPIO on the jetson, like on B01 devkit, we are trying to drive cam-mux from an I2C GPIO Expander (PCA9536) pin. I am having a hard time trying to configure so that jetson knows which pin to use as mux for selecting the cameras. Consequently, we are unable to instantiate both the cameras together (video0 and video1 like on devkit) in a single boot instance.
Please any explanation on how the jetson muxes the cam-mux-gpio pin during bootup, and how to have it use another gpio pin, not on the jetson module, as a mux selector would be highly appreciated.
Thanks in advance!