linux 2.6.22 is working correctly on my board. So, I think this is due to the difference between them. I will check the boot time difference between 2.6.22 and my new port. Hope that will give me a clue.
2010/4/23 Andy Fleming <aflem...@gmail.com>: > On Thu, Apr 22, 2010 at 9:36 PM, Peter Pan <pppeterpp...@gmail.com> wrote: >> I'm porting Linux 2.6.32.6 to my MPC8247 based board. Our FCC1 and >> FCC2 are used as 100MBps ethernet ports. MDIO is used to connect with >> PHY chip. During boot, the of driver is checking the PHYID, it gets >> all Fs. But after I comment the following lines: >> //if ((phy_id & 0x1fffffff) == 0x1fffffff) >> // return NULL; >> I can use my FCC ethernet normally after boot into console. > > This means that your PHY can work without any initialization, and > implies the problem is with your MDIO bus. > >> I checked that while boot, all the read bit from MDIO pin is 1, that >> makes no TA bit, and no PHYID. >> I'm wondering why is that happening. > > Possible reasons include the board being wired incorrectly (so the PHY > is not responding to MDIO commands), or software being configured > incorrectly to use the wrong pins for MDIO. That's my guess. > > Andy > _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
