Bits per word in imx6ull SPI

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Bits per word in imx6ull SPI

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mathew_k_t
Contributor II

Hi,

I'm working with imx6ull based board. In my system, I'm using an SPI device.

SPI device driver used is an iio driver.

I found the bits per word in the communication as 8 bpw, and required length is 32bpw.

I configured spi-> bits_per_word as 32, but the system hangs on booting.

How to change the burst length?

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi  mathew

in general changing spi-> bits_per_word should not affect boot,

one can try to find place in code where it hangs using

AN4553 Using Open Source Debugging Tools for Linux on i.MX Processors
https://www.nxp.com/docs/en/application-note/AN4553.pdf

Best regards
igor
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