PROCESSOR-SDK-AM335X: SPI - kernel space driver

Adam Kozlowski

Hi,

I try to write a kernel-space driver/module to extend the regular SPI behavior with some additional handshake. I use BBB (AM335x family) as my testbed. The AM335x acts as a master and CC13x2 is a slave module.
I have everything ready on the CC13x2 side and now I'm starting with the Linux side.
Would you point me to some good documentation or examples to start with the subject?

As far as I know, I have to use McSPI driver as a "raw" SPI and add some code into my own driver to play with GPIOs. Am I right?
Any examples?

Best regards,
Adam

over 5 years ago

0 Nick Saulnier over 5 years ago

TI__Guru** 106610 points

Hello Adam,

Please note that we do not support custom driver development on the TI forums. You can find the documentation for TI's omap-spi driver here. The bindings documentation is at Documentation/devicetree/bindings/spi/omap-spi.txt . You also might be able to find helpful information in a previous e2e post with a google site search like "site:e2e.ti.com AM335x SPI etc".

Regards,

Nick

0 Adam Kozlowski over 5 years ago in reply to Nick Saulnier

Expert 1805 points

Thanks for some hints.

Regards,

Adam

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PROCESSOR-SDK-AM335X: SPI - kernel space driver