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mimxrt10xx: Review what crazy options we can turn on in the beefier chips #2492

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arturo182 opened this issue Jan 9, 2020 · 2 comments
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mimxrt10xx: Review what crazy options we can turn on in the beefier chips #2492

arturo182 opened this issue Jan 9, 2020 · 2 comments
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mimxrt10xx iMX RT based boards such as Teensy 4.x
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Long term

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@arturo182
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We have 1MB of RAM and almost unlimited (well, 8/16/32 MB) code flash, let's do crazy things!

Ideas welcome
@arturo182 arturo182 added the mimxrt10xx iMX RT based boards such as Teensy 4.x label Jan 9, 2020
@arturo182 arturo182 added this to the 6.0.0 milestone Jan 9, 2020
@tannewt
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tannewt commented Jan 10, 2020

I'd like to start marking CircuitPython code and data so we can separate it into specific RAMs. That should speed up all SoCs which have tightly coupled memory (TCM).

@tannewt tannewt mentioned this issue Jan 18, 2020
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@tannewt tannewt modified the milestones: 6.0.0, Long term Jan 21, 2020
tannewt added a commit that referenced this issue Jan 27, 2020
@tannewt
Refine iMX RT memory layout and add three boards
7d8dac9 
Introduces a way to place CircuitPython code and data into
tightly coupled memory (TCM) which is accessible by the CPU in a
single cycle. It also frees up room in the corresponding cache for
intermittent data. Loading from external flash is slow!

The data cache is also now enabled.

Adds support for the iMX RT 1021 chip. Adds three new boards:
* iMX RT 1020 EVK
* iMX RT 1060 EVK
* Teensy 4.0

Related to #2492, #2472 and #2477. Fixes #2475.
@dhalbert
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Closing this because many things have happened since it was opened.

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@tannewt @arturo182 @dhalbert