[Version 3] Raspberry CPU support

[benoit-cty]

Following #790 I've added the support for Rpi 4 and 5 CPU.

Source : https://gadgetversus.com/processor/broadcom-bcm2712-vs-broadcom-bcm2711/

[inimaz]

I see in the reference that this one is 8W

[benoit-cty]

That's because the Cortex-A72 is integrated into the Broadcom BCM2711 System on a Chip (SoC) for the Raspberry Pi 4. The entire BCM2711 chip (which packages the quad-core Cortex-A72 CPU alongside the VideoCore VI GPU and I/O controllers) is broadly rated with a TDP of around 7.5 Watts.

[inimaz]

@benoit-cty you have some conflicts there, can you check? It would be interesting to merge this thanks!

[davidberenstein1957]

@benoit-cty heads-up: #797 covers the Raspberry Pi power reading through vcgencmd pmic_read_adc in 8 files with a test, and is mergeable. Worth checking whether the Pi part of this PR is still needed next to it, or whether this one can shrink to the datasets and notebooks.

[benoit-cty]

Hi David,
It's complementary : cpu database is for fallback.
I will look to merge these 2 PR.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.07%. Comparing base (8a8776a) to head (0941389).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #791   +/-   ##
=======================================
  Coverage   92.07%   92.07%           
=======================================
  Files          49       49           
  Lines        5202     5202           
=======================================
  Hits         4790     4790           
  Misses        412      412           

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[benoit-cty]

Ready to merge. Can someone review this 2 lines PR ?

[davidberenstein1957]

Two rows in cpu_power.csv, placed in order, and the values are in line with the Pi 4 (BCM2711, about 6.5 to 7.5 W under load) and Pi 5 (BCM2712, about 12 W) board figures, so constant mode gets a sane number instead of the default. One thing I could not check from here: that cpuinfo on a Pi reports the model as Cortex-A72 / Cortex-A76 so the lookup actually hits. If you have seen that match on your Pi, good to merge.