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net, davinci_emac: let the EMAC detect the PHYs

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Once the MDIO state machine has been initialized and enabled, it
starts polling all 32 PHY addresses on the MDIO bus, looking for
an active PHY. Add a 5 ms delay, so all PHYs are for sure detected.

This problem was detected on the cmc board with a KSZ8864 switch.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Heiko Schocher 2011-09-14 19:37:42 +00:00 committed by Albert ARIBAUD
parent c3b4a475d7
commit 19fdf9a1c3
1 changed files with 3 additions and 0 deletions
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3
drivers/net/davinci_emac.c
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@ -680,6 +680,9 @@ int davinci_emac_initialize(void)
davinci_eth_mdio_enable();
/* let the EMAC detect the PHYs */
udelay(5000);
for (i = 0; i < 256; i++) {
if (readl(&adap_mdio->ALIVE))
break;