Hello,
I am using IMX6UL. We have access SPI from user-space using spidev and it is working fine. Now we wants to access SPI from the kernel(from reboot.c file) to give some data to attached slaves just before the kernel power off. So please guide me how to access SPI from this place. how to initialize , configure and send/receive data through SPI from reboot.c kernel file. We are using Linux kernel 4.1.15
Regards,
Lalabhai
To access it in kernel space you can write kernel application (kernel driver).
http://derekmolloy.ie/writing-a-linux-kernel-module-part-1-introduction/
Have a great day,
Victor
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