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How to disable GIC-500 242?

Hi Sir,

We want to turn off GIC-500 242 on Linux kernel to avoid competing with M-core for EIRQ.

JeffCFHuang_0-1754904477060.png

JeffCFHuang_3-1754904819000.png


Could you guide us on how to achieve this, such as through DTS or other configurations?

Best regards,
Jeff Huang

Re: How to disable GIC-500 242?

hi,Jeff-CF-Huang

Thank you for your reply.

If you do not check the interrupt of SIUL1_ORED_IRQn, you are not enable the interrupt in M core.

Joey_z_0-1754984218862.png

Joey_z_2-1754984238265.png


Hope it can help you.

BR

Joey


Re: How to disable GIC-500 242?

Hi Joey,

Thank you for your reply.
Could you guide us on how to keep this IRQ on the A53 cores without routing it to the M7 cores?

Best regards,
Jeff Huang

Re: How to disable GIC-500 242?

hi,Jeff-CF-Huang

Thank you for your reply.

Check the interrupts information, The 242 interrupt is used to gpio.

Joey_z_0-1754966364638.png

You can try to modify the file of (ATF/fdts/s32g.dtsi), it has the define for gpio in this file.

Joey_z_1-1754966417586.png

Hope it can help you.

BR

Joey


Re: How to disable GIC-500 242?

Hi Joey,

We are currently using BSP 40 with kernel 5.15 (RDB3), but plan to migrate to BSP 44 with kernel 6.6.

 

Best regards,
Jeff Huang

Re: How to disable GIC-500 242?

hi,Jeff-CF-Huang

Thank you for contacting us.

Could you share more information to us?

Which version of BSP are you using? And are you using the RDB2 or RDB3?

BR

Joey

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最后更新:
‎11-20-2025 03:08 PM
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