Adding spi slave support for imx8qm evaluation board with Yocto

s233199 — Tue, 02 Oct 2018 09:43:50 GMT

Hello, I need to write an spi slave driver for an IMX8QuadMax evaluation board, using Yocto. I read that starting from kernel 4.13 Linux has also slave support in spi.c, but my board has an older version of the kernel. I wanted to know if I can update it to the needed version, and how. I am new to yocto and to driver development. Thank you in advance for your support!

Re: Adding spi slave support for imx8qm evaluation board with Yocto

igorpadykov — Thu, 04 Oct 2018 00:24:53 GMT

Hi Erica

i.MX8QuadMax processor is not officially launched and there is no full support for it yet.

One can try to add slave support using its driver sources on

spi-fsl-lpspi.c\spi\drivers - linux-imx - i.MX Linux kernel

and slave software for this module from other processors software packages, like

EVKB-IMXRT1050 SDK..devices/MIMXRT1052/drivers/fsl_lpspi.c

Welcome | MCUXpresso SDK Builder

or sect.4.LPSPI Slave Operation AN5320
https://www.nxp.com/docs/en/application-note/AN5320.pdf

Best regards
igor
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Adding spi slave support for imx8qm evaluation board with Yocto

Re: Adding spi slave support for imx8qm evaluation board with Yocto