[En-Nut-Discussion] More Olimex SAM7-EX256 success

[Uwe Bonnes]

Hallo,

more success with the Olimex SAM7-EX256 :-)

with the "PHY_PD" jumper removed, the httpd aquires a DHCP address and
serves the http port as expected.

The "PHY_PD" jumper either permanent pulls done the PD_N pin of the KS8721
PHYS, connects it to PB18 ot leaves the the PD_N pin pulled up with 1k.

On the AT91SAM7X-EK, RESET_N of the DM9161A seems to be connect fixed to
PB18.

I tried to read the datasheets of the Davicom and Micrel Phys for a
difference in Reset behaviour, but didn't find something. 

at91_emacs.c:EmacReset()
permanent pulls down PB18:
#ifdef PHY_PWRDN_BIT
    /* Disable PHY power down. */
    outr(EMAC_PIO_PER, _BV(PHY_PWRDN_BIT));
    outr(EMAC_PIO_OER, _BV(PHY_PWRDN_BIT));
    outr(EMAC_PIO_CODR, _BV(PHY_PWRDN_BIT));
#endif

I tried to add
#ifdef PHY_PWRDN_BIT
    outr(EMAC_PIO_SODR, _BV(PHY_PWRDN_BIT));
#endif
at exit of at91_emacs.c:EmacReset(), but to no avail.

Any ideas?

Thanks
-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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