Hi all,
I used DM814x EZSDK and I did the PCIe eye diagram test on DM8148.
But I encountered the fail status on voltage amplitude.
I found SERDES_TXCFG0 register and try to fine tune DEEMP and SWING fields.
I executed following command, but there is no change in voltage amplitude when I did the PCIe eye diagram test.
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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 fine tune DEEMP and SWING fields for PCIe have the sequence must be followed?
Could anyone please give me some hints?
Thanks in advance.
Sherry