boards/olimex-msp430-h2618: fix ztimer config [backport 2024.04] #20583
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
maribu
added
Area: boards
The MSP430 timer prescaler can device the 16 MHz clock down to (16 / 2^x) MHz, with 0 <= x < 4. So no slower than 2 MHz. With the current ztimer config the clock would run at twice the speed. (cherry picked from commit 43fa3bc)
maribu
force-pushed
the
backport/2024.04/boards/olimex-msp430-h2618/ztimer
branch
from
20f6fb4 to
5f4f149
Compare
Teufelchen1
approved these changes
Apr 23, 2024
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Backport of #20575
Contribution description
The MSP430 timer prescaler can device the 16 MHz clock down to (16 / 2^x) MHz, with 0 <= x < 4. So no slower than 2 MHz.
With the current ztimer config the clock would run at twice the speed.
Testing procedure
The tests wouldn't really catch this, but the datasheet and the test in
tests/periph/timercan confirm that it gets no slower than 2 MHz with a 16 MHz subsystem main clock.Issues/PRs references
None