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 <h...@denx.de>
---
drivers/net/davinci_emac.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index d58c28b..a8905b8 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -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;
--
1.7.6
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