Hi Andy On 12/2/09, Andy Green <andy@xxxxxxxxxxx> wrote: > It's more a question about what that input on the PHY chip sees during > powerup / reset... it needs to be nicely and definitely high the whole > time so it will ignore what happens then. Is it pulled up, or just > connected to the iMX GPIO? iMX GPIO alone may not be enough. They > mostly default to 100K pullup but even that may not be enabled early in > the powerup action. > The CS_N pin is connected directly to GPIO (PA24) with no pull-up. > A 10K to your IO voltage rail on CS_N solved it for the LiteKIT and on > the boards we have made. > I place a 10K resistor to pull-up and changed CS_N to low at usb platform init and it worked fine! Thank you very much! Best Regards, Alan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
