> > 'No EDID data' says bootlog. Also, all 0 when reading that i2c client > > address afterwards. I don't see or sense anything suspicious with the > > I2C transfers itself from remote. > > Did you use the DRM/KMS modetest program to display stuff on the HDMI > monitor? To trigger the error case you need to a couple of steps -
Nope, I have to admit I assumed when the kernel says that it has no EDID data that it would have triggered reading the data from the monitor. > HDMI monitor and the HDMI encoder chip works ok, but the bits between > the HDMI encoder chip and the I2C master on the SoCs may need some > more attention. I understood that the encoder needs a trigger to read the data. It then provides EDID data via a special I2C device address. That is read by a simple 64-byte I2C read transfer which I didn't have issues with here. And reading it byte-per-byte gave the same results.
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