> From: johnko...@hotmail.com > To: linuxppc-dev@lists.ozlabs.org > Subject: P1021MDS QE Ethernet Ports > Date: Wed, 1 Sep 2010 15:11:56 +0300 > > > Hello, > > we are seeing a strange behavior when trying to use the QE Ethernet > interfaces. > ENET5 (UCC5 - RMII) interface on P1021MDS boards does not come up if there is > no physical link on the ENET1 (UCC1 - MII) Port. > It seems that interrupts from ENET5 are normally received but the link comes > up and works properly only if we have physical connection on ENET1. > So far I found the following:
After adding traces, it seems that genphy_update_link() polls the correct device, with the correct address (0x03), but although a physical link is present in ENET5, the polling is not successful until there is a link in ENET1 (address 0x02)! genphy_update_link: Dev: Micrel KS8041 ADD: 3 Status read 0x7849 (without ENET1 Link) genphy_update_link: Dev: Micrel KS8041 ADD: 3 Status read 0x786D (with ENET1 Link) How does the MDIO of ENET1 affect the management of the physical interface in a different HW address? > Can anyone think of a possible reason for this behavior, is there a way to > trace this problem? > I can provide any further information needed. > > Any help would be appreciated, > Regards, > John > > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
