[ECOS] Full or half duplex in MPC8xx QUICC ethernet driver if_quicc.c ?

["Tord Andersson" <Tord dot Andersson at combitechsystems dot com>]

Hi,

I have found something which seems a little bit odd in the MPC8xx QUICC
ethernet driver (if_quicc.c).

The driver is presumably expected to work in full duplex mode:
        // now just assume the link is up, full duplex, unknown speed.
        
        p->operational = 3;            // LINK UP
        p->duplex = 1;
        p->speed = 0;

but the PSMR register does not seem to have its FDE (Full Duplex Enable)
bit set:
    // Protocol specifics (as if GSML wasn't enough)
    scc->scc_psmr = QUICC_PMSR_ENET_CRC | QUICC_PMSR_SEARCH_AFTER_22 |
        QUICC_PMSR_RCV_SHORT_FRAMES;

Does anyone have some additional information or comment concerning this
topic?

Kind regards,

Tord Andersson



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