Hi Lawson
I export the spidev0.0 and spidev0.1 and use the spidev_test to send data probe the CS1 I can see the CS1 is working as expect. Below is my test command. Could you verify it.
Also please dump the pin to make sure those pin are’t set as GPIO pin. The bit 0 -4 should be 0 in bank C .
cat /sys/kernel/debug/tegra_gpio
./spidev_test -D /dev/spidev0.1 -s1000000 -g8 -b8 -p0 -n1 -zzz -t