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iMX6 SDK Ethernet driver:  MAC transmit problem

Question asked by Tyler Sheffield on Jan 30, 2014
Latest reply on Feb 20, 2014 by Tyler Sheffield

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Gonna need some Freescale FAE expertise for this one.  I'm using the Platform SDK and modifying it for a Nitrogen6x board with the Micrel 9021 PHYs.  When I set up a TxBD and then hit the control tx ready bit, the packet never transmits.  TxBD ready bit is never cleared, no event interrupt.

 

There is no hardware problem because ethernet works just fine in Uboot.  I've gone through and set up my registers for the MAC and PHY to match exactly what Uboot is doing - no luck.  Some kind of IOMUX issue?  I've been through all that though, including getting some help on these forums to do it correctly and using Uboot as a guide as well.  Bringing in some hardware help soon to take a closer look at some signals on the board to see if we can find something wrong.

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