Port/Broadcom Switch to "unmeasured" core clock speed check

[RetiredWizard]

When sending requests to the video core to return the "measured" CORE clock rate the mailbox registers frequently hang preventing any further access to the video core. This PR replaces the "measured" CORE clock rate checks with an unmeasured request. Fixes #5887 & fixes #5913.

A separate pull request to adafruit/broadcom-peripherals (adafruit/broadcom-peripherals#1) is being submitted to add the additional mailbox call routine.

This will also resolve the deinit issue noted in #5887

Tested on zero2w, zero_w and pi4b.

[RetiredWizard]

So the updated broadcom-peripherals changed a lot of the parameter names. I'm working my way through the modules swapping in the new names but it's going to take a while.

[RetiredWizard]

There was one file in the broadcom-peripherals repository that needed to be updated with the new parameter names. I'll wait for that to be merged (adafruit/broadcom-peripherals#2) before pushing the hopefully final updates for this PR

As an aside, during my testing it seemed like some of the 4b SD card issues with the 4b were improved after using the new peripherals folder, although I've been fooled before when things seem to get better for awhile :/. The zerow and zero2w I tested with, both seem pretty solid once this PR is applied. I 've only been testing a couple hours now but haven't seen #5628 with this PR yet either NVM just occurred.

[tannewt]

Thank you for the updates!

[criptych]

Is it safe to assume that this didn't yet make it into 8.0.3? I'm experiencing similar issues trying to control a Crickit HAT (which communicates via I2C): motors are moving out of sync, updating the onboard NeoPixel has an obvious delay; but I only noticed now that this wasn't merged until yesterday.

[RetiredWizard]

Looking at the github 8.0.3 tag this update isn't included so I'm guessing it hasn't been merged into the released builds yet. If you used the "absolute newest" link from the circuitpython.org downloads page you should get a firmware file with this update merged in.

I would love to hear if this resolves the timing issues :)

[dhalbert]

This was merged into main, which is on the 8.1.0-beta track, and will probably not be backported to the 8.0.x branch. We'll be making 8.1.0-beta.0 soon.

[criptych]

Good to know, thank you both. I should have some time this evening to check out the beta.