Hi, I'm experiencing some strange spi behaviour with an at91sam9g20. I changed the spi_xfer code (atmel_spi.c) to make use of the PDC that the at91sam9g20 offers. This works fine, but only up to an spi bus speed of 10 to 12 MHz. After that I see the CS going down sometimes before the transfer is complete. When the frequency is increased the issue starts appearing more often.
I saw that in env_sf.c that the spi bus speed is set at 10 MHz and was wondering if there was a specific reason for that? 10 MHz is acceptible but I would like to understand what is happening, so if anybody experienced and maybe even investigated the problem, please let me know. Wouter Moors -- there's only 10 kinds of people. The ones that understand binary and the ones that don't.
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