This issue looks very much like another post "DM368 output YCC8 at NTSC with bad vertical parameters". But the situation is worse - HDMI transmitter can not lock to DM368 video output running at standard mode, output YCC16 with embedded sync at 480P. We have cross-examined the HDMI transmitter - it has no problem taking YCC16 input with embedded sync at 480P from an ADC. Now the issue comes down to DM368.
480P and 576P are twins: how 576P is programmed, and so is 480P. The only difference is VENC.VMOD, H/V active, and H/V margin. However, 576P behaves fine while 480P does not.
The following is the register dump:
0x01c71e00: 00000501 00006000 00000000 00000000
0x01c71e10: 0000003e 00000006 00000359 0000007a
0x01c71e20: 000002d0 0000020c 00000024 000001e0
0x01c71e30: 00000000 00000000 00000001 00000000
0x01c71e40: 0000ff00 00000000 00000000 00000001
0x01c71e50: 00000000 00000000 00000000 00000000
0x01c71e60: 00000000 00000800 00000001 00000000
0x01c71e70: 00000000 00000000 00000000 00000000
0x01c71e80: 00000000 00000000 00000000 00000000
0x01c71e90: 00000000 00000000 00000000 00000000
0x01c71ea0: 00000000 00000000 00000000 00000000
0x01c71eb0: 00000000 00000000 00000000 00000000
0x01c71ec0: 00000000 00007000 00000000 0000017a
0x01c71ed0: 00000000 00000000 00000000 00000000
0x01c71ee0: 00000100 00000000 00000000 00000000
0x01c71ef0: 00000000 00000000 00000000 00000000
0x01c71f00: 00000400 0000057c 00000159 000002cb
0x01c71f10: 000006ee 00000400 0000057c 00000159
0x01c71f20: 000002cb 000006ee 00000000 00000000
0x01c71f30: 00000001 00000000 00000000 00000000
0x01c71f40: 00000010 00000000 00000000 00000000
0x01c71f50: 00000000 00000000 00000000 00000000
0x01c71f60: 00000000 00000000 00000000 00000000
0x01c71f70: 0000d642 00000000
Same as the post "DM368 output YCC8 at NTSC with bad vertical parameters", this issue also appears to be a sync issue. Please suggest how we can tune DM368. Thanks in advance.