Sometimes HDMI source (using HDCP encryption) when changing the video standard may cause audible
noise (300-1s) on ADV7611, ADV7612. This behaviour was noted on the PS3.
The root cause of this problem is on HDMI source device that breaks HDCP encryption, and sends
erroneous packets, such as invalid audio infoframe packets.
To avoid noise - broken packets should be ignored, this can be done by setting value of regsiter
HDMI map 0x45[3:0] to 4 or other value (4 is suggested). Register (0x45[3:0]) called also
PKT_ERR_BURST_FILT allows HDMI packets to be ignored after broken packet is found
and resume trusting+processing them after number of consecutive correct packets (N)
0 = Disabled (default)
N = Consecutive good packets after packet error detected, before allowing dispatch to process new packets
Value of N should be possibly small to avoid rejecting too many packets.