i2cdetect wouldn't really work for the CTAG, as its codec is on the SPI bus, and not I2C.
Can you send a picture of the board as it is?
Can you try to run the following commands, one at a time, and send the result?
grep uboot_overlay /mnt/boot/uEnv.txt
grep -i "8dc\|828\|8d4\|82c\|8d8" /sys/kernel/debug/pinctrl/44e10800.pinmux/pins