static void macb_phy_reset(struct macb_device *macb)
{
struct eth_device *netdev = &macb->netdev;
int i;
u16 status, adv;
int rmii_mode;
unsigned min_hz;
#ifdef CONFIG_RMII
rmii_mode = 1;
min_hz = 50000000;
#else
rmii_mode = 0;
min_hz = 25000000;
#endif
adv = ADVERTISE_CSMA | ADVERTISE_ALL ;
if (get_hsb_clk_rate() < min_hz) {
printf("%s: HSB clock < %u MHz in %s mode - "
"disabling 100mbit.\n", netdev->name, min_hz / 1000000,
(rmii_mode ? "RMII" : "MII"));
adv &= ~ADVERTISE_100FULL;
adv &= ~ADVERTISE_100HALF;
adv &= ~ADVERTISE_100BASE4;
}
macb_mdio_write(macb, MII_ADVERTISE, adv);
printf("%s: Starting autonegotiation...\n", netdev->name);
macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE
| BMCR_ANRESTART));
for (i = 0; i < CFG_MACB_AUTONEG_TIMEOUT / 100; i++) {
status = macb_mdio_read(macb, MII_BMSR);
if (status & BMSR_ANEGCOMPLETE)
break;
udelay(100);
}
if (status & BMSR_ANEGCOMPLETE)
printf("%s: Autonegotiation complete\n", netdev->name);
else
printf("%s: Autonegotiation timed out (status=0x%04x)\n",
netdev->name, status);
}
static struct tag *setup_clock_tags(struct tag *params)
{
params->hdr.tag = ATAG_CLOCK;
params->hdr.size = tag_size(tag_clock);
params->u.clock.clock_id = ACLOCK_BOOTCPU;
params->u.clock.clock_flags = 0;
params->u.clock.clock_hz = gd->cpu_hz;
#ifdef CONFIG_AT32AP7000
/*
* New kernels don't need this, but we should be backwards
* compatible for a while...
*/
params = tag_next(params);
params->hdr.tag = ATAG_CLOCK;
params->hdr.size = tag_size(tag_clock);
params->u.clock.clock_id = ACLOCK_HSB;
params->u.clock.clock_flags = 0;
params->u.clock.clock_hz = get_hsb_clk_rate();
#endif
return tag_next(params);
}
