Could you please confirm that if i supply the VDDIO_HV with +1.8V, only SFIO0 (I2C4) for DDC is available.
SPDIF_OUT, I2C6, USB_VBUS_EN_0_1, CEC, OWR not available.
Correct, I2C4 only from SFIO0 wise when 1.8V powered.
SPDIF_OUT & USB_VBUS_EN0_1, CEC can still be used as GPIO with 1.8V powered though.
Thanks for your feedback.