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Beginner
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X557-AT No MDC/MDIO Signal

Hi,

Problem: No MDC/MDIO signal

10G BASE –T PHY: Intel, X557-AT

Flash Image:

1. BDXDE_KR_BACKPLANE_LED_LO_NO_MNG_1.13v02_800006D1.bin

2. BDXDE_10GBASET_NO_MNG_1.13v02_800006B7.bin

===========Eth Info==================

root@genericx86-64:/dni# ethtool -i eth1

driver: ixgbe

version: 5.0.0-k

firmware-version: 0x800006a8

expansion-rom-version:

bus-info: 0000:04:00.0

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: yes

===========Eth Info End==================

04:00.0 Ethernet controller: Intel Corporation Ethernet Connection X552 10 GbE Backplane

04:00.1 Ethernet controller: Intel Corporation Ethernet Connection X552 10 GbE Backplane

Description:

We try to do MDI single r/w through MSCA(0x0000425c) and MSRWD(0x00004260).

The rule and steps is shown below

04:00.0 [Base address] + [offset] [32 bits] [value]

devmem 0x383fff400000+0x0000425c 32 0x501dc501 //Address cycle PHYAD = 0x00

devmem 0x383fff400000+0x00004260 32 0x00002001 //Test Mode 1

devmem 0x383fff400000+0x0000425c 32 0x541dc501 //Write operation

Is it correct?

We also try to use the tool of "lanconf64e" doing IEEE Tests, but we still cannot got MDC/MDIO signal.

Then, we upgrade flash to BDXDE_10GBASET_NO_MNG_1.13v02_800006B7.bin.

However, the situation is the same.

Another question is when we use BDXDE_10GBASET_NO_MNG_1.13v02_800006B7.bin, the eth cannot link up.

If we change the image to XXX_BACKPLANE..., it can link up in 1G. But, 10G doesn't work...

Why we can't get MDC/MDIO signal?

In backplane mode, why X557 only link up in 1G?

Could you give us some suggestions?

Thanks

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4 Replies
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Beginner
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CPU is "Intel, Broadwell-DE SoC, 4Core/8T"

Intel, Broadwell-DE SoC, 4Core/8T

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Community Manager
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Hello, mike.liu.

 

 

Thank you very much for taking the time to reach the Intel® Communities Team.

 

 

I will move your thread to the correct department so shortly you will receive further assistance for this issue you are facing.

 

 

Thank you for your patience.

 

 

 

Antony S.
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Community Manager
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Hi Mike.liu,

 

 

Thank you for the inquiry. As this is an embedded components inquiry, please post your inquiry at our embedded support at https://embedded.communities.intel.com/community/en. They will better assist you from there.

 

 

Thanks,

 

Sharon T
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Beginner
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OK

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