Hi all,
I did the PCIe eye diagram test on DM8148. But I encountered the fail status on voltage amplitude . So, I checked SERDES_TXCFG0 register to fine tune DEEMP and SWING fields. But I could not get the improvement after executed following command.
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# ./memtool -32 0x510003a4=0x01001600
# ./memtool -32 0x510003a4=0x0100F600
# ./memtool -32 0x510003a4=0x01010600
# ./memtool -32 0x510003a4=0x0101F600
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Did this fine tune have the sequence must be followed? Please shed some light to me here. Thanks in advance.
B.R.
OC