secondary cores

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secondary cores

356 Views
hv
Contributor II

For a T1040/T1042, if I plan to run only one core, what's the best way to handle the secondary cores?  Turn them off, put them in idle, sleep, etc...?  uboot puts the secondary cores in spin loop but I don't plan to use uboot.  Thanks!

1 Reply

272 Views
r8070z
NXP TechSupport
NXP TechSupport


Have a great day,

I think the best way is to disable the secondary cores in the DCFG_CCSR_COREDISR register, while the unused cores are in boot-holdoff  mode. The manual says: “After system ready, a DCFG_CCSR_COREDISR register bit can be programmed for the corresponding core by the external debugger or embedded software while the core is in boot-holdoff mode.”

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