Hi Igor,
On 24/06/19 10:39, Igor Opaniuk wrote:
From: Igor Opaniuk igor.opaniuk@toradex.com
Default value (4000ms) of PHY_ANEG_TIMEOUT for Micrel KSZ9031 contoller isn't sufficient to finish auto-negotiation, which sometimes leads to timeout errors:
Apalis iMX6 # dhcp FEC Waiting for PHY auto negotiation to complete......... TIMEOUT !
Increase the auto-negotiation time-out to 15000ms.
I have no problems to merge this, it is your board. But this seems just hide the issue. 15 seconds for autonegotiation timeout is just a work-around. This means that the autonegotiation fails several times and (maybe with some switches) it has a bigger probability to succeed if we increase the timeout, that is the phy tries more time to set up the link.
Best regards, Stefano Babic
Signed-off-by: Igor Opaniuk igor.opaniuk@toradex.com
v2:
- Based on empirical results from Philippe Schenker, increased timeout value to 15s, just to be on the safe side
include/configs/apalis_imx6.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/include/configs/apalis_imx6.h b/include/configs/apalis_imx6.h index 4b0a3fb26b..df31cf6fe7 100644 --- a/include/configs/apalis_imx6.h +++ b/include/configs/apalis_imx6.h @@ -58,6 +58,7 @@ #define IMX_FEC_BASE ENET_BASE_ADDR #define CONFIG_FEC_XCV_TYPE RGMII #define CONFIG_ETHPRIME "FEC" +#define PHY_ANEG_TIMEOUT 15000 /* PHY needs longer aneg time */ #define CONFIG_FEC_MXC_PHYADDR 6 #define CONFIG_TFTP_TSIZE