[nrf fromtree] dts: nrf54h20: Add zephyr,pm-device-runtime-auto; to uart instances #3269
Conversation
This file contains hidden or 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
ppryga-nordic
force-pushed
the
enable-pm-device-runtime-auto-to-54h20-uart-dts
branch
from
53e40e3 to
92c32d9
Compare
ppryga-nordic
force-pushed
the
enable-pm-device-runtime-auto-to-54h20-uart-dts
branch
from
92c32d9 to
80525c4
Compare
nordic-piks
approved these changes
Sep 12, 2025
ppryga-nordic
force-pushed
the
enable-pm-device-runtime-auto-to-54h20-uart-dts
branch
from
80525c4 to
85a85d0
Compare
ppryga-nordic
changed the title
ppryga-nordic
force-pushed
the
enable-pm-device-runtime-auto-to-54h20-uart-dts
branch
from
85a85d0 to
9a00d5c
Compare
bjarki-andreasen
approved these changes
Sep 12, 2025
ppryga-nordic
force-pushed
the
enable-pm-device-runtime-auto-to-54h20-uart-dts
branch
2 times, most recently
from
7ace648 to
6855f0d
Compare
|
Waiting for upstream PR to be merged zephyrproject-rtos/zephyr#95894. Then I'll change this one to |
ppryga-nordic
force-pushed
the
enable-pm-device-runtime-auto-to-54h20-uart-dts
branch
from
6855f0d to
9a19b84
Compare
…art instances The uart driver for nRF54h20 doesn't call pm_device_runtime_enable(). During an uart driver init `pm_device_driver_init()` return early, because the `pm_device_is_powered()` returns `false`. Power domains, where uarts are instantiated, are disabled: `pm->domain->pm_base->state` is not equal to `PM_DEVICE_STATE_ACTIVE`. At the end of the day, an uart instance is left disabled. This is a workaround to make the uart usable when CONFIG_PM, CONFIG_PM_DEVICE and CONFIG_PM_DEVICE_RUNTIME are enabled. Signed-off-by: Piotr Pryga <[email protected]> (cherry picked from commit eaede77)
ppryga-nordic
force-pushed
the
enable-pm-device-runtime-auto-to-54h20-uart-dts
branch
from
9a19b84 to
dc7391b
Compare
ppryga-nordic
changed the title
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
4 participants
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.
The uart driver for nRF54h20 doesn't call pm_device_runtime_enable().
During an uart driver init
pm_device_driver_init()return early,because the
pm_device_is_powered()returnsfalse. Power domains,where uarts are instantiated, are disabled:
pm->domain->pm_base->stateis not equal to
PM_DEVICE_STATE_ACTIVE.At the end of the day, an uart instance is left disabled.
This is a workaround to make the uart usable when CONFIG_PM,
CONFIG_PM_DEVICE and CONFIG_PM_DEVICE_RUNTIME are enabled.
(cherry picked from commit eaede77)
Signed-off-by: Piotr Pryga [email protected]