Quartus 14.0 Clock generation

I'm using the HPS EMAC - RGMII.

At the moment i'm doing nothing with the FPGA Fabric.

So the part that is nog working is the configuration of the PHY. One in the many times (on a power cycle), the PHY successfully gets configured. after the PHY is configured, it's no problem to load the Kernel and Rootfs. so i think the the data paths are oke.

The problem lies in the configuration of the PHY.

Also i see, that if the board starts-up in a cycle where the PHY does nothing. I can't even write something to the PHY with UBOOT command - MII Write.

Strange. that sometimes, the PHY gets configured and everything works normaly. I can boot linux form nfs, and do everything i want. But most of the times, the phy doesn't gets configured and i can't get access to the PHY. When i do a MII DUMP , i get 0xFFFF. and can't write back.

You would say, that is the EMAC controller is out of reset and the PHY is out of reset, you could at least do some basic MII WRITE commands.

Any ideas ?

Thanks in advanced.