The mpc512x FEC network driver resets the FEC before transferring packets. With this reset, the FEC clears the previous setting of MII transfer speed. This patch ensures, that it is set again to a reasonable value after a FEC reset.
Signed-off-by: Thomas Doerfler <[email protected]> -- diff --git a/drivers/net/mpc512x_fec.c b/drivers/net/mpc512x_fec.c index fb2c19a..f3d76ba 100644 --- a/drivers/net/mpc512x_fec.c +++ b/drivers/net/mpc512x_fec.c @@ -446,6 +446,19 @@ static void mpc512x_fec_halt (struct eth_device *dev) * wait at least 16 clock cycles */ udelay (10); + /* + * NOTE: reset will also clear the MII speed register + * we should reinitialize it ASAP + */ + if (fec->xcv_type != SEVENWIRE) { + /* + * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock + * and do not drop the Preamble. + */ + fec->eth->mii_speed = ((((gd->ips_clk / 1000000) / 5) + + 1) + << 1); + } #if (DEBUG & 0x3) printf ("Ethernet task stopped\n"); #endif -- -------------------------------------------- Embedded Brains GmbH Thomas Doerfler Obere Lagerstrasse 30 D-82178 Puchheim Germany email: [email protected] Phone: +49-89-18908079-2 Fax: +49-89-18908079-9 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
