topic Enable and Distribute IRQs in Linux in i.MX Processors

Enable and Distribute IRQs in Linux

saravanankrish — Wed, 25 Jan 2017 12:42:54 GMT

Hello,

I am using imx6 sabrelite board in which Linux OS runs on core0 and RTOS on core1. I have configured GIC interrupt registers in RTOS but Linux OS overwrites it. I need to enable IRQs 88,142,143,150 and distribute it to core 1(RTOS) in linux source code. I have gone through the irq_gic.c file but couldn't get an idea to proceed further.

i have tried cat /proc/interrupts in serial console and i couldn't see the above IRQ numbers. is that indicates the above interrupts are disabled in Linux?

How to enable and distribute interrupts in Linux source code?

Your suggestions are welcome!

Thanks in advance.

Re: Enable and Distribute IRQs in Linux

igorpadykov — Wed, 25 Jan 2017 23:27:50 GMT

Hi saravan

please refer to generic linux documentation on found on web, like

Linux Device Drivers, 2nd Edition: Chapter 9: Interrupt Handling

4.6. Interrupt Handling - Understanding the Linux Kernel, 3rd Edition [Book]

and sect.3.2 Interrupts (Operation) attached Linux Manual.

Best regards
igor
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