From 19fdf9a1c338c408b992f3d0a7fd03b4207b8cf9 Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Wed, 14 Sep 2011 19:37:42 +0000 Subject: [PATCH] net, davinci_emac: let the EMAC detect the PHYs 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 Signed-off-by: Sandeep Paulraj --- drivers/net/davinci_emac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index d58c28bca3..a8905b88f1 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; -- 2.25.1