Duo 256M - TPU Overclocking

Duo
1

Hey everyone!

I was curious whether someone had a successful attempt on overclocking TPU. Recent issues with kernel crashes showed that the switch between 0.5 and 1.0 Tops can be done by changing a single flag in the buildroot (commit: duo256m disable TPU_PERF_MODE · milkv-duo/duo-buildroot-sdk@e49d424 · GitHub). Further investigation led me to a file where the voltage and clock rate can be set up (duo-buildroot-sdk/fsbl/plat/cv181x/platform.c at 77c7d953efe67d9d9742ebda62c629be83d4d991 · milkv-duo/duo-buildroot-sdk · GitHub). I haven’t played with that yet, but I got curious if someone already performed that and managed to achieve a stable version with increased TPU performance. Please share some results!

Best,
Konrad

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2

I heard there’s a slight issue with power supply on board, so that it causes Duo 256M not working properly with camera. I wonder, can this affect overclocking too.

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Definitely, however, a quickfix was also found. Me and my colleagues have successfully applied those changes and our board is running on full performance without any further issues

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I’ve heard of the issue but not the specifics. I’ve been interested in overclocking the duo cores and would love to hear any additional information on the issue or quick fix.

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5

That’s the link to the mentioned fix: Duo 256MB - camera-test.sh kernel panic under low light conditions - #11 by Carbon

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