I’m attempting to connect two Quad-HAT boards to one Pi CM4 with a carrier board that supports two cameras.
Observations:
When either Quad-HAT is plugged into the CAM0 port, then those 4 cameras work properly. However whenever either Quad-HAT is plugged into the CAM1 port, then those 4 cameras are not recognized.
It seems like the drivers do not support the CAM1 port. Can I please get some assistance for adding support for this to the drivers?
From dmesg I see:
[ 12.031202] dw9807_vcm: loading out-of-tree module taints kernel.
[ 12.050544] dw9807 10-000c: I2C write CTL fail ret = -121
[ 12.130142] arducam_64mp 10-001a: failed to read chip id 4136, with error -5
[ 12.155111] uart-pl011 fe201000.serial: no DMA platform data
[ 12.168688] 8021q: 802.1Q VLAN Support v1.8
[ 12.171183] dw9807 10-000c: I2C write STATUS address fail ret = -121
[ 12.171222] dw9807 10-000c: dw9807_standby I2C failure: -121
[ 12.173536] dw9807 10-000c: I2C write CTL fail ret = -121
[ 12.222119] arducam_64mp: probe of 10-001a failed with error -5
And don’t see why this probe would fail, looking at the driver code. Might be a problem with the carrier board I’m using so going to try the official IO board on Monday.
Your idea has been tested recently and it works fine. Of course, it is recommended that you test it on the official board first.
If you still can’t, take a look at your wiring diagram and configuration files.
cat /boot/config.txt
This issue was resolved by fixing the config.txt file - It was missing a line that’s mentioned in the documentation.