Commit Graph

3 Commits

Author SHA1 Message Date
Lucian Copeland 2f764ded63 merge and docs 2020-04-01 13:52:53 -04:00
Lucian Copeland a89928c13c Implement requested changes 2020-04-01 13:02:05 -04:00
Scott Shawcroft 7d8dac9211
Refine iMX RT memory layout and add three boards
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.
2020-01-17 17:36:08 -08:00