Problem with the u-boot ETH PHY is not getting detected

hi, Siva.

which PHY chip are you trying with ?

i get the same problem with KSZ8041NL/RNL...

i cannot detect the PHY chip.. and also, i cannot read it's ID  form the MDIO interface.

i doubt does 365 emac interface supports this chip.

Would you guys get any more details on it ???

reguards, Mike.

What PHY address are you using? We used 0, which worked on previous U-Boot versions, but didn't on the latest.

hi, Siva.

what's your " previous U-Boot version"? we are trying with u-boot-2010.12-rc1-psp03.01.01.38,  however

about, PHY address, it is always getting detected if successfully in the u-boot, right ?

i had tried with address form  0 to 255 with a loop to read the PHY ID form the chip but without luck.

by the way , would you please tell me which PHY chip are you trying with ?

reguards, Mike.

Hi wen,

i have used the latest u-boot from the arago project .

http://arago-project.org/git/people/?p=sandeep/u-boot-davinci.git;a=summary

we are using KS8001L ETH PHY chip.

The main problem  with the U-boot source from arago is that ,there was not support for DM365 leopard Board.It has support for DM365EVM board.

the leopard U-boot source was working fine for me ,but with the U-boot from arago project  ETH PHY chip is not getting detected .are u using DM365 Leopard board ?if it is so ,please check the Schematics and see which DM365 GPIO's are connected to ETH PHY chip .the GPIO's used in case of DM365EVM differ from that of DM365 Leopard Board.

I was able to solve as they were using different GPIOs for conecting to ETH PHY chip ,this i changed as per my Leopard Board schematic connections .

regards,

Siva.

HI, Siva

i had launched another post here , where you can see indetails what we had done with that PHY chip.

since i had no info with DM365 leopard Board, i want to ask you about the difference between GPIOs for conecting to ETH PHY chip .

thinks again for sharing your experience.

regards, Mike.

Siva,

Im having exactly the same problems can you please post your modification, I have the exact same chip and the problem presists.

Best Regards,

Sam

Hi Sam,

are u using DM368 leopard board ?i have solved this problem on DM368 leopard board .i am posting the changes what i have done in the arago u-boot source .

In board/davinci/dm365evm.c

/* Configure PINMUX 3 to enable EMAC pins */
        writel((readl(PINMUX3) | 0x1affff), PINMUX3);
        writel(0x00000015, PINMUX2);// use GPIO 57 - 64

also reset the ETH PHY chip ,GPIO23 is connected to the RESET pin of ETH PHY chip.

the above changes will let U-boot to detect the ETH PY chip.

Thanks,

SIvaramkrishna.

hey sorry ,its GPIO60 thats connected to the ETH PHY chip.

Hi Siva,

Thanks for your reply, I have the Leopard DM365 and not the 368, however the problem is similar. I will try these changes to see if it has any effect and let you know. I will also look at the schematics to see if something else needs changing. Can you zip and post your U-boot aswell? Im also having a problem with nand not being able to save so im guessing that also needs changing of some form. Thanks for your help

Best Regards,

Sam

Hi Siva,

I just tested this and it works!!!!....... Thanks alot!!!. It might be worthwhile to give this information to leopard dm365 and dm368 boards on their forums and Im guessing other people would have the same problem once they try to update their u-boot to support mmc if nothing else.

Thanks again.

Best Regards,

Sam

Hi Siva,

Whoever faces this problem im attaching my modified file for the dm365 evm as Siva has mentioned this file is located in: uboot/board/davinci/dm365evm/dm365evm.c

The problems is the pinouts for the NAND,ethernet controller and for the TVP5146 composite video input board. These dont work with the configuration in the dm365evm.c for the leopards. These have been modified so now they all work and should for the 368 aswell.

Both the modified and unmodified files can be found at:

http://www.zshare.net/download/93535562e435cb72/

http://www.zshare.net/download/93535573b626109b/

Best Regards,

Sam

Samer Tufail said:

Hi Siva,

 

Whoever faces this problem im attaching my modified file for the dm365 evm as Siva has mentioned this file is located in: uboot/board/davinci/dm365evm/dm365evm.c

 

The problems is the pinouts for the NAND,ethernet controller and for the TVP5146 composite video input board. These dont work with the configuration in the dm365evm.c for the leopards. These have been modified so now they all work and should for the 368 aswell.

 

Both the modified and unmodified files can be found at:

 

http://www.zshare.net/download/93535562e435cb72/

http://www.zshare.net/download/93535573b626109b/

 

Best Regards,

 

Sam

Please find the updated link for the modified file here:

http://www.2shared.com/file/QoSxMdx5/dm365evm-Samer.html

When i am booting the leopard board with u-boot from RidgeRun ethernet port on the board is not getting detected. can anyone suggest its the hardware problem with the bard or i need to modify the u-boot code

Hi SIvaramkrishna,

      I use the DM368 Appro board,I also have to solve the problem of  "No ETH PHY detected!!!".

      I'm also trying to use your advise to change the dm365evm.c

      You said that in your board "GPIO60 is connected to the RESET pin of ETH PHY chip",but in my appro board,

GPIO50 is connected to the RESET pin of ETH PHY chip.Can you help me to modify the changes?

/* Configure PINMUX 3 to enable EMAC pins */
        writel((readl(PINMUX3) | 0x1affff), PINMUX3);
        writel(0x00000015, PINMUX2);// use GPIO 57 - 64

Thanks so much!!!