topic Linux User Space Driver Using uio_pdrv_genirq in i.MX Processors

Linux User Space Driver Using uio_pdrv_genirq

brianyokum — Mon, 25 Jun 2018 14:06:17 GMT

I am using the Morty branch of the i.MX Yocto BSP (imx-4.9.11-1.0.0_qa.xml) for the imx6ull-14x14-evk. I would like to implement a user space driver using uio_pdrv_genirq. It doesn't appear that that uio_pdrv_genirq is currently being built as part of the kernel. I've tried to modify defconfig is various directories to add this support with no luck. What is the correct/best way to enable this support?

Re: Linux User Space Driver Using uio_pdrv_genirq

gusarambula — Fri, 29 Jun 2018 17:26:09 GMT

Hello Brian Yokum,

Yocto is designed as a tool to build and customize Linux distributions. However, it is not meant for development so bitbake is not looking for changes on the source codes, which may explain why you are seeing your defconfigs reversed to the default values.

The following community document covers how to create an append recipe to change the kernel configuration, so perhaps it may be of help.

https://community.nxp.com/docs/DOC-334088

Regards,