Our customer who is using ADV7842 is facing to the issue when connecting to particular PC(personal computer), it makes HDMI input disable, and this status of disable is keep continuing even after changing source of input.
They cut and tried, and see it recovers to be enabled to input when writing 0x40 to IO map address 0xFF(IO_REG_FF).
UG-206, ADV7842 Software User Guide, IO map is not showing anything at bit 6 of the IO_REG_FF.
Could you please let us know what is defined at bit 6, and what can be occured if writing 1 at this bit, are you assuming ?
Thank you very much for your support,