topic Re: AR8031 Phy 1 not found on U-Boot in i.MX Processors

AR8031 Phy 1 not found on U-Boot

valentinafernan — Fri, 27 May 2016 15:56:51 GMT

Hi,

We are facing a problem with the AR8031 phy chip. It seems that the phy address is not properly recognized by u-boot.

Ethernet works on kernel as expected.

Phy address is set to 1 on our hardware, however when setting the PHY address to one on u-boot the following message appears:

U-Boot 2015.04-00132-g244c0eb-dirty (May 18 2016 - 15:58:37)

...

In: serial

Out: serial

Err: serial

Net: Phy 1 not found

When we change the phy address to 0 on u-boot, the output is the following:

U-Boot 2015.04-00132-g244c0eb-dirty (May 26 2016 - 18:15:43)

....

In: serial

Out: serial

Err: serial

Net: FEC [PRIME]

Some weeks ago U-boot was recognizing the chip in phy address 1 and now it is working on phy address 0 without making any hardware changes.

Why is this happening?

Ethernet schematic:

Thanks

fabio_estevam — Sun, 29 May 2016 15:10:05 GMT

I would suggest you to try 2016.05. If it does not work then you could post your code to the U-boot mailing list.

igorpadykov — Mon, 30 May 2016 00:38:09 GMT

what uboot is used, nxp bsps uboot-imx_v2015.04_4.1.15_1.0.0_ga

use address 1 as default for i.MX6 sabre reference boards:

uboot-imx_v2015.04_3.14.52/include/configs/mx6sabre_common.h

CONFIG_FEC_MXC_PHYADDR 1

Best regards

igor