Under the Linux3.0.35 kernel version, how to increase the access frequencies of IMX6Q SPI's CS ? The attachment is the picture of SPI access frequencies when clock cycles is 20 MHZ. Red one is CS singal,the yellow one is SPI clock signal.

[ferdi]

Hi :

Under the Linux3.0.35 kernel version, how to increase the access frequencies of IMX6Q SPI's CS ? The attachment is the picture of SPI access frequencies when clock cycles is 20 MHZ. Red one is CS singal,the yellow one is SPI clock signal.

Ferdi

Best Regards!

[igorpadykov]

Hi ferdi

one can try to enable dma:

https://community.freescale.com/thread/328465

https://lkml.org/lkml/2014/9/15/1075

Best regards

igor

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[ferdi]

Dear igorpadykov:

     The connection patch is based on the IMX51 platform, which is not compatible with the IMX6Q platform, Do not know if there is a Linux3.0.35 based IMX6Q patch platform? Thank you!

Best regards!

Ferdi