C6747 cannot link to PHY

user4627568

I want to run ndk on C6747 custom board。I add the driver from ndk 2.00 . I add PSC and pinmux to the progect.It seems that initialization of EMAC is completed.But link status is not correct. I recorded the MDIO0 register.

R MDIO0_REV 0x0000000B 0x00070105
R MDIO0_CONTROL 0x0000000B 0x4100004B
R MDIO0_ALIVE 0x0000000B 0x00000002

R MDIO0_LINK 0x0000000B 0x00000000
R MDIO0_LINKINTRAW 0x0000000B 0x00000000
R MDIO0_LINKINTMASKED 0x0000000B 0x00000000
R MDIO0_USERINTRAW 0x0000000B 0x00000001
R MDIO0_USERINTMASKED 0x0000000B 0x00000000
R MDIO0_USERINTMASKSET 0x0000000B 0x00000000
R MDIO0_USERINTMASKCLEAR 0x0000000B 0x00000000
R MDIO0_USERACCESS0 0x0000000B 0x20217849
R MDIO0_USERPHYSEL0 0x0000000B 0x00000000
R MDIO0_USERACCESS1 0x0000000B 0x00000000
R MDIO0_USERPHYSEL1 0x0000000B 0x00000000

MDIO0_LINK is zero.it should no be zero.AND MDIO0_LINK is read-only.

also when I connect my laptop to the custom board using network cable,my laptop does not find anything connect to it.(my laptop is working properly ) ，it maybe realted to GPIO。So I add the gpioRegs->BANK[GP3].SET_DATA = GP3P11 at the start of my progect.

And after I run the progect ，the The network card of my computer can not find the the board。Please give me some advice.

Thanks for your reply.(I have read the Guidelines when porting NDK to different PHYs on wiki ).

over 9 years ago

0 Raja over 9 years ago

TI__Guru* 81335 points

I have assigned this to our experts. They will get back to you as soon as possible. Thank you for your patience.

0 user4627568 over 9 years ago in reply to Raja

Prodigy 170 points

Dear Raja

I check 50Mhz clock for phy and solve it。
C6747 can link to my computer，But I cannot get response if I ping 192.168.1.2 。I set my IP address is 192.168.1.1,and the IP address of c6747 is 192.168.1.1.

thanks for your reply.

0 Senthilkumar Srinivasan over 9 years ago in reply to user4627568

TI__Mastermind 43660 points

Hello,

Have you tried PHY loopback test to verify the C6747 and PHY functionality ?

Are you seeing this issue on one board or multiple board ?

Regards,
Senthil

0 Titusrathinaraj Stalin over 9 years ago in reply to user4627568

TI__Guru** 116100 points

Which example are you running ?
How did you configure the IP mode ?
DHCP mode or Static ?

If you set static IP mode, connect ethernet cable between PC and EVM then try to ping.

0 user4627568 over 9 years ago in reply to Senthilkumar Srinivasan

Prodigy 170 points

Hello Senthil，

the PHY can receive message.MDIO clock is right.But emac cannot enter Rx interrupt and never get into HwRxInt()(Receive Packet ISR.)。 RXPENDn is always 0;

I think EMAC does't work correctly.but it shows:

Using MAC Address: ba-bb-bc-bd-be-bf
EMAC should be up and running
EMAC has been started successfully
Registeration of the EMAC Successful
Network Added: If-1:192.168.1.2
Link Status: 100Mb/s Full Duplex on PHY 1

what should I do if I want find the problem.

And I run my progect on omap-137,it works well.

Thanks for your reply.

0 Senthilkumar Srinivasan over 9 years ago in reply to user4627568

TI__Mastermind 43660 points

Please respond to the questions by Titus ?

Regards,
Senthil

0 user4627568 over 9 years ago in reply to Senthilkumar Srinivasan

Prodigy 170 points

Dear Senthil
Thanks for your help.
I solve the problem by correct the modio clock.I change the clock from dsp not the external clock.

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C6747 cannot link to PHY