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zephyr: update to zephyr 4.4.0#19157

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dpgeorge:zephyr-update-4-4-0
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zephyr: update to zephyr 4.4.0#19157
dpgeorge wants to merge 5 commits into
micropython:masterfrom
dpgeorge:zephyr-update-4-4-0

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@dpgeorge dpgeorge commented Apr 27, 2026

Summary

This PR updates the zephyr port to work with zephyr 4.4.0, which was released two weeks ago.

Testing

Tested on frdm_k64f and nucleo_wb55rg using all possible tests in the test suite, include BLE tests on the WB55. There are no regressions.

(Note that the WB55 needs the latest HCI WS firmware to work correctly.)

Will also be tested under CI.

Generative AI

I did not use generative AI tools when creating this PR.

dpgeorge added 2 commits April 27, 2026 12:20
@dpgeorge
zephyr/modbluetooth_zephyr: Use BT_LE_ADV_OPT_CONN for connection flag.
0e1580f 
Changed in zephyr commit e24d3b92a3a2b016d932d075fad0b2d9e1922f22, the only
option for connectable advertising is now BT_LE_ADV_OPT_CONN, whose value
is _BT_LE_ADV_OPT_CONNECTABLE|_BT_LE_ADV_OPT_ONE_TIME.

Signed-off-by: Damien George <damien@micropython.org>
@dpgeorge
zephyr/boards/nucleo_wb55rg: Remove scratch_partition deletion.
5768106 
It was removed in zephyr commit b348fd4d7a6ba92aa45ae8d96ad018c0e0cf11db.

Signed-off-by: Damien George <damien@micropython.org>
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codecov Bot commented Apr 27, 2026 •
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.46%. Comparing base (8a56be6) to head (6fee5cf).

Additional details and impacted files 
@@           Coverage Diff           @@
##           master   #19157   +/-   ##
=======================================
  Coverage   98.46%   98.46%           
=======================================
  Files         176      176           
  Lines       22811    22811           
=======================================
  Hits        22460    22460           
  Misses        351      351

☔ View full report in Codecov by Sentry.
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dpgeorge added 2 commits April 27, 2026 12:46
@dpgeorge
zephyr/boards/qemu_x86: Enable CONFIG_X86_SSE2 for _Float16 use.
29aa9f1 
Otherwise there is a compiler error.  Likely due to the update to use
zephyr SDK 1.0.1.

Signed-off-by: Damien George <damien@micropython.org>
@dpgeorge
zephyr/prj_minimal.conf: Enable CONFIG_UART_CONSOLE_DEBUG_SERVER_HOOKS.
ea7fd7a 
To be consistent with the setting in `prj.conf`, so that the function
`uart_console_in_debug_hook_install()` is enabled.

Signed-off-by: Damien George <damien@micropython.org>
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github-actions Bot commented Apr 27, 2026 •
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Code size report:

Reference:  extmod/moductypes: Be more defensive with uctypes_struct_agg_size args. [8a56be6]
Comparison: zephyr: Upgrade to Zephyr v4.4.0. [merge of 6fee5cf]
  mpy-cross:    +0 +0.000% 
   bare-arm:    +0 +0.000% 
minimal x86:    +0 +0.000% 
   unix x64:    +0 +0.000% standard
      stm32:    +0 +0.000% PYBV10
      esp32:    +0 +0.000% ESP32_GENERIC
     mimxrt:    +0 +0.000% TEENSY40
        rp2:    +0 +0.000% RPI_PICO_W
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS
  qemu rv32:    +0 +0.000% VIRT_RV32

@dpgeorge dpgeorge force-pushed the zephyr-update-4-4-0 branch from 0c4b872 to 74f21df Compare April 27, 2026 02:46
@dpgeorge
zephyr: Upgrade to Zephyr v4.4.0.
6fee5cf 
Updates the Zephyr port build instructions and CI to use the latest Zephyr
release tag.

Tested on frdm_k64f and nucleo_wb55rg.

Signed-off-by: Damien George <damien@micropython.org>
@dpgeorge dpgeorge force-pushed the zephyr-update-4-4-0 branch from 74f21df to 6fee5cf Compare April 27, 2026 03:11
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dpgeorge commented May 1, 2026

@VynDragon maybe you would like to review this PR? Are you using zephyr 4.4.0?

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VynDragon commented May 1, 2026

More of a mainline/ bleeding edge user. What do you need validated? Just see if it builds and runs with some random mcus? I do not use QEMU otherwise.

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dpgeorge commented May 1, 2026

What do you need validated

I tested on hardware mentioned above. Also CI runs the qemu build over the test suite. So there's nothing much extra to do in that regard.

Just if you could take a look at the changes and see if anything jumps out at you as being wrong or could be improved.

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VynDragon commented May 1, 2026

I don't see anything wrong, but I am not qualified on the changes pertaining to QEMU, STM, and BLE (but switching to BT_LE_ADV_OPT_CONN looks correct).

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dpgeorge commented May 1, 2026

OK, thanks for looking!

@VynDragon VynDragon mentioned this pull request May 8, 2026
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