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Old 01-31-2014, 02:33 AM   #1
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Atmel ARM SAMA5: Driving PCK (Programmable Clock) Output as clock to FPGA

Dear forum members,

I have an ATMEL ARM SAMA5D31 board, that I would like to interface to an FPGA. One of the things I would like, is to have the ARM generate a clock (approx 100MHz) for the FPGA.

I think the PCK outputs can be used for that purpose, but so far I have not been able to use these pins as clock outputs.

I am using a at91-buildroot based linux 3.6.9 with glib and device-tree support.

Does anyone know how to set up this output to produce such a clock?
The frequency is not critical.

Thanks in advance,


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