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RK3588: rktop only shows 2 NPU cores but the chip and driver provide 3 #5

@fjwdennis

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@fjwdennis

I'm running rktop on an Orange Pi 5 (RK3588, 3-core NPU) and noticed that rktop only displays 2 NPU cores in the UI, but the hardware and driver expose all 3 cores.

When I check /sys/kernel/debug/rknpu/load, I get:
NPU load: Core0: 63%, Core1: 65%, Core2: 64%,

Like this:
:~$ sudo cat /sys/kernel/debug/rknpu/load
NPU load: Core0: 63%, Core1: 65%, Core2: 64%,

Could you add proper support for all 3 NPU cores? Thanks!

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