I was wondering if there was a way to invert the MDC of the fsl-fec Ethernet controller via a setting in the DTS file?
Looking at the data sheet for the LAN8720 ethernet tranceiver datasheet: http://media.digikey.com/pdf/Data%20Sheets/SMSC/LAN8720.pdf
pgs 35/55 it look like the Data should be clocked in on the rising edge of the MDC signal. With at least 10ns of setup/hold
However when I look at the two signals on a scope, I can see that this timing requirement is not met (looks like both MDIO and MDC are changing at the same time)
So I was wondering if there was any way of inverting it via the .dts file to improve the margin?