Hi Matt ,
Do you agree According I2C HDMI standards :
According to I2C-bus Specification, version2.1, Section 15
VIH = 0.7VDD - (VDD+0.5)[V]
VIL = -0.5 - 0.3VDD[V]
When VDD is +5V:
VIH = 3.5 - 5.5[V]
VIL = -0.5 - 1.5[V]
But this device has a Spec
VIH：+2.6V(min) -DIGITAL INPUTS (5V TOLERANT)
VIL：+0.8V(max) -DIGITAL INPUTS (5V TOLERANT)
Considering the Above if a Low Signal of 1.19V - 1.5V is send to this then device take this signal as High .
So we will need a level shift to make this device HDMI compliant .
Could you please let me know with regards to the above explanation .