/retimer0 6 => 1  tx port
/retimer0 7 => 2 tx port
/retimer1 4 => 4 tx port
/retimer1 5 => 3 tx port

/retimer0 5 => 1 rx port
/retimer0 4 => 2 rx port
/retimer1 7 => 3 rx port
/retimer1 6 => 4 rx port

Reset channel registers, selfclearing.
i2c write retimer0 1 3 6 00 04
i2c write retimer0 1 3 7 00 04
i2c write retimer1 1 3 4 00 04
i2c write retimer1 1 3 5 00 04

i2c write retimer0 1 3 4 00 04
i2c write retimer0 1 3 5 00 04
i2c write retimer1 1 3 6 00 04
i2c write retimer1 1 3 7 00 04

assert CDR RESET
i2c write retimer0 1 3 6 0a 0C
i2c write retimer0 1 3 7 0a 0C
i2c write retimer1 1 3 4 0a 0C
i2c write retimer1 1 3 5 0a 0C

i2c write retimer0 1 3 4 0a 0C
i2c write retimer0 1 3 5 0a 0C
i2c write retimer1 1 3 6 0a 0C
i2c write retimer1 1 3 7 0a 0C

Select 10.31. Select 10.3125 Gbps standard rate mode for
i2c write retimer0 1 3 6 2F C0
i2c write retimer0 1 3 7 2F C0
i2c write retimer1 1 3 4 2F C0
i2c write retimer1 1 3 5 2F C0

i2c write retimer0 1 3 4 2F C0
i2c write retimer0 1 3 5 2F C0
i2c write retimer1 1 3 6 2F C0
i2c write retimer1 1 3 7 2F C0

Set Adapt Mode 1 or 0.
i2c write retimer0 1 3 6 31 20
i2c write retimer0 1 3 7 31 20
i2c write retimer1 1 3 4 31 20
i2c write retimer1 1 3 5 31 20

i2c write retimer0 1 3 4 31 00
i2c write retimer0 1 3 5 31 00
i2c write retimer1 1 3 6 31 00
i2c write retimer1 1 3 7 31 00

EQ=0x00, Select the right value depending on the channel loss.
i2c write retimer0 1 3 4 03 00
i2c write retimer0 1 3 5 03 00
i2c write retimer1 1 3 6 03 00
i2c write retimer1 1 3 7 03 00
Same as Reg_0x03
i2c write retimer0 1 3 4 3A 00
i2c write retimer0 1 3 5 3A 00
i2c write retimer1 1 3 6 3A 00
i2c write retimer1 1 3 7 3A 00
Same as Reg_0x03
i2c write retimer0 1 3 4 40 00
i2c write retimer0 1 3 5 40 00
i2c write retimer1 1 3 6 40 00
i2c write retimer1 1 3 7 40 00


Set fixed EQ setting value for divide by 4 and divide by 8 rates.
i2c write retimer0 1 3 6 3A 00
i2c write retimer0 1 3 7 3A 00
i2c write retimer1 1 3 4 3A 00
i2c write retimer1 1 3 5 3A 00


Power down DFE.
i2c write retimer0 1 3 6 1E 08
i2c write retimer0 1 3 7 1E 08
i2c write retimer1 1 3 4 1E 08
i2c write retimer1 1 3 5 1E 08

i2c write retimer0 1 3 4 1E 08
i2c write retimer0 1 3 5 1E 08
i2c write retimer1 1 3 6 1E 08
i2c write retimer1 1 3 7 1E 08

Configure VOD, 600 mV or 800mV.
i2c write retimer0 1 3 6 2d 00
i2c write retimer0 1 3 7 2d 00
i2c write retimer1 1 3 4 2d 00
i2c write retimer1 1 3 5 2d 00

i2c write retimer0 1 3 4 2d 0a
i2c write retimer0 1 3 5 2d 0a
i2c write retimer1 1 3 6 2d 0a
i2c write retimer1 1 3 7 2d 0a

Configure the tx DEM, -3 db.
i2c write retimer0 1 3 6 15 62
i2c write retimer0 1 3 7 15 62
i2c write retimer1 1 3 4 15 03
i2c write retimer1 1 3 5 15 03

Configure the rx DEM, 0 db.
i2c write retimer0 1 3 4 15 00
i2c write retimer0 1 3 5 15 00
i2c write retimer1 1 3 6 15 00
i2c write retimer1 1 3 7 15 00

Release CDR reset.
i2c write retimer0 1 3 6 0A 00
i2c write retimer0 1 3 7 0A 00
i2c write retimer1 1 3 4 0A 00
i2c write retimer1 1 3 5 0A 00

i2c write retimer0 1 3 4 0A 00
i2c write retimer0 1 3 5 0A 00
i2c write retimer1 1 3 6 0A 00
i2c write retimer1 1 3 7 0A 00

//serdes show 1 3 1 0 1000000 10000000
//serdes show 1 3 2 0 1000000 10000000
//serdes show 1 3 3 0 1000000 10000000
//serdes show 1 3 4 0 1000000 10000000