soc: silabs: Add RAIL Multiprotocol support #93892

loopj · 2025-07-30T19:41:53Z

This PR adds support for the Silicon Labs RAIL Multiprotocol library, which provides coexistence and arbitration between multiple wireless protocols (for example, Bluetooth LE and a proprietary 2.4 GHz stack) on Gecko SoCs.

Depends on zephyrproject-rtos/hal_silabs#126

github-actions · 2025-07-30T19:43:17Z

The following west manifest projects have changed revision in this Pull Request:

Name	Old Revision	New Revision	Diff
hal_silabs	zephyrproject-rtos/hal_silabs@`95e9574`	zephyrproject-rtos/hal_silabs@`295caf3` (`main`)	zephyrproject-rtos/[email protected]

Additional metadata changed:

Name	URL	Submodules	West cmds	`module.yml`	Blobs
hal_silabs				✏	12x 🆕

⛔ DNM label due to: 1 project with metadata changes and 12 blob changes

Note: This message is automatically posted and updated by the Manifest GitHub Action.

asmellby

Nice, thanks a lot for this!

asmellby · 2025-07-31T06:59:34Z

soc/silabs/Kconfig

@@ -310,4 +310,13 @@ config SOC_GECKO_CUSTOM_RADIO_PHY
 	  management, sending and receiving packets on radio phy. User has
 	  to provide the radio_config.c and radio_config.h files for the phy.

+config SOC_GECKO_RAIL_MULTIPROTOCOL


We would like for new Kconfig options that are used to select HAL content to be in the HAL Kconfig files. We also have a desire to split options targeting Gecko SDK from options targeting Simplicity SDK, as these SDKs will diverge over time.

I propose adding config SILABS_SISDK_RAIL_MULTIPROTOCOL in modules/hal_silabs/simplicity_sdk/Kconfig, and a similar option in gecko.

The existing SOC_GECKO options will need to be disentangled over time and migrated to the HAL Kconfig files, but that's out of scope for this PR IMO.

loopj · 2025-07-31T18:39:02Z

@asmellby made those requested Kconfig option changes, and also fixed a pre-existing bug with blob importing on series 1 / gecko_sdk devices.

Side note: Bluetooth HCI doesn't actually seem to be implemented on any Series 1 boards in Zephyr, I'll consider adding that in a seperate set of PRs.

modules/hal_silabs/gecko/Kconfig

modules/hal_silabs/simplicity_sdk/Kconfig

modules/hal_silabs/simplicity_sdk/config/ll/sl_btctrl_config.h

modules/hal_silabs/gecko/Kconfig

west.yml

jerome-pouiller · 2025-08-01T17:20:46Z

modules/hal_silabs/simplicity_sdk/Kconfig

@@ -34,4 +34,12 @@ config RAIL_PA_ENABLE_CALIBRATION
 	  calibration. This option is enabled by default, and is recommended for all
 	  Series 2 devices.

+config SILABS_SISDK_RAIL_MULTIPROTOCOL


We use SILABS_SISDK_ prefix for the features but other Rail related options are just prefixed by RAIL_. We should keep consistency (I am not opposed to rename RAIL_ options, but it would break compatibility).

modules/hal_silabs/simplicity_sdk/config/ll/sl_btctrl_config.h

jhedberg · 2025-08-05T07:37:52Z

@loopj there's a conflict in west.yml that needs resolving (i.e. you need to rebase against latest main)

Adds Kconfig options to enable RAIL Multiprotocol support Signed-off-by: James Smith <[email protected]>

Enables RAIL Multiprotocol support by linking against the multiprotocol RAIL library blob when `CONFIG_SILABS_GECKO_RAIL_MULTIPROTOCOL` or `CONFIG_SILABS_SISDK_RAIL_MULTIPROTOCOL` are enabled. Signed-off-by: James Smith <[email protected]>

Bugfix to correct broken binary blobs path when using the Gecko SDK. Signed-off-by: James Smith <[email protected]>

Set `SL_RAIL_LIB_MULTIPROTOCOL_SUPPORT` to `1` when Rail Multiprotocol Kconfig is enabled. This is required to run the Bluetooth multiprotocol initialization code during `sl_btctrl_init`. Signed-off-by: James Smith <[email protected]>

loopj · 2025-08-05T15:32:08Z

@asmellby @jerome-pouiller can you please discuss and give me some concrete guidance on the following

If setting the #define SL_RAIL_LIB_MULTIPROTOCOL_SUPPORT explicitly to 0 or 1 (vs implicitly) need to be changed - I set these explicitly to mirror the .slcc behavior in simplicity_sdk
What I should name the Kconfig variable - I've already changed this once, so I guess I'll hold off until I have clarity

In the meantime I've rebased from main to avoid the west.yml conflict so we should be good to go there.

Thanks!

sonarqubecloud · 2025-08-05T15:33:50Z

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

jerome-pouiller · 2025-08-06T06:38:39Z

If setting the #define SL_RAIL_LIB_MULTIPROTOCOL_SUPPORT explicitly to 0 or 1 (vs implicitly) need to be changed.

Let's keep the current code until a real policy emerge.

What I should name the Kconfig variable - I've already changed this once, so I guess I'll hold off until I have clarity

The right thing to do is to rename the RAIL_PA_ options. I will take care of this change today (I want to avoid half done clean-up).

jerome-pouiller · 2025-08-06T07:28:31Z

I will take care of this change today

In progress: #94151

jhedberg · 2025-08-06T08:48:16Z

Removed the "DNM (manifest)" label after verifying that the added blobs are compliant with Zephyr policy.

zephyrbot added the platform: Silabs Silicon Labs label Jul 30, 2025

zephyrbot requested review from asmellby, jerome-pouiller, jhedberg, Martinhoff-maker, mnkp, rettichschnidi and yonsch July 30, 2025 19:42

zephyrbot assigned jhedberg and asmellby Jul 30, 2025

github-actions bot added manifest manifest-hal_silabs DNM (manifest) This PR should not be merged (controlled by action-manifest) Binary Blobs Added labels Jul 30, 2025

asmellby reviewed Jul 31, 2025

View reviewed changes

loopj force-pushed the silabs-rail-multiprotocol-support branch from 561392d to 1b318b8 Compare July 31, 2025 17:07

loopj force-pushed the silabs-rail-multiprotocol-support branch from 1b318b8 to 26ed65f Compare July 31, 2025 18:51

asmellby reviewed Aug 1, 2025

View reviewed changes

modules/hal_silabs/gecko/Kconfig Outdated Show resolved Hide resolved

modules/hal_silabs/simplicity_sdk/Kconfig Outdated Show resolved Hide resolved

modules/hal_silabs/simplicity_sdk/config/ll/sl_btctrl_config.h Outdated Show resolved Hide resolved

loopj force-pushed the silabs-rail-multiprotocol-support branch from fbb6b20 to c250f4c Compare August 1, 2025 17:03

asmellby reviewed Aug 4, 2025

View reviewed changes

modules/hal_silabs/gecko/Kconfig Outdated Show resolved Hide resolved

modules/hal_silabs/gecko/Kconfig Outdated Show resolved Hide resolved

west.yml Outdated Show resolved Hide resolved

loopj force-pushed the silabs-rail-multiprotocol-support branch from c250f4c to 4662908 Compare August 4, 2025 17:53

asmellby previously approved these changes Aug 5, 2025

View reviewed changes

jerome-pouiller reviewed Aug 5, 2025

View reviewed changes

loopj added 4 commits August 5, 2025 08:29

soc: silabs: Add Kconfig options to enable RAIL Multiprotocol support

b82b080

Adds Kconfig options to enable RAIL Multiprotocol support Signed-off-by: James Smith <[email protected]>

modules: silabs: Fix broken binary blobs path with Gecko SDK

c58f8fb

Bugfix to correct broken binary blobs path when using the Gecko SDK. Signed-off-by: James Smith <[email protected]>

loopj dismissed asmellby’s stale review via cc130b3 August 5, 2025 15:30

loopj force-pushed the silabs-rail-multiprotocol-support branch from 4662908 to cc130b3 Compare August 5, 2025 15:30

jerome-pouiller approved these changes Aug 6, 2025

View reviewed changes

asmellby approved these changes Aug 6, 2025

View reviewed changes

jhedberg removed the DNM (manifest) This PR should not be merged (controlled by action-manifest) label Aug 6, 2025

jhedberg approved these changes Aug 6, 2025

View reviewed changes

jhedberg merged commit ba86c10 into zephyrproject-rtos:main Aug 6, 2025
27 of 29 checks passed

loopj deleted the silabs-rail-multiprotocol-support branch August 6, 2025 15:13

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

soc: silabs: Add RAIL Multiprotocol support #93892

soc: silabs: Add RAIL Multiprotocol support #93892

Uh oh!

loopj commented Jul 30, 2025

Uh oh!

github-actions bot commented Jul 30, 2025 •

edited

Loading

Uh oh!

asmellby left a comment

Uh oh!

asmellby Jul 31, 2025

Uh oh!

loopj commented Jul 31, 2025

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

jerome-pouiller Aug 1, 2025 •

edited

Loading

Uh oh!

Uh oh!

jhedberg commented Aug 5, 2025

Uh oh!

loopj commented Aug 5, 2025

Uh oh!

sonarqubecloud bot commented Aug 5, 2025

Uh oh!

jerome-pouiller commented Aug 6, 2025

Uh oh!

jerome-pouiller commented Aug 6, 2025 •

edited

Loading

Uh oh!

jhedberg commented Aug 6, 2025

Uh oh!

Uh oh!

Uh oh!

soc: silabs: Add RAIL Multiprotocol support #93892

soc: silabs: Add RAIL Multiprotocol support #93892

Uh oh!

Conversation

loopj commented Jul 30, 2025

Uh oh!

github-actions bot commented Jul 30, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

asmellby left a comment

Choose a reason for hiding this comment

Uh oh!

asmellby Jul 31, 2025

Choose a reason for hiding this comment

Uh oh!

loopj commented Jul 31, 2025

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

jerome-pouiller Aug 1, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Uh oh!

jhedberg commented Aug 5, 2025

Uh oh!

loopj commented Aug 5, 2025

Uh oh!

sonarqubecloud bot commented Aug 5, 2025

Quality Gate passed

Uh oh!

jerome-pouiller commented Aug 6, 2025

Uh oh!

jerome-pouiller commented Aug 6, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

jhedberg commented Aug 6, 2025

Uh oh!

Uh oh!

Uh oh!

github-actions bot commented Jul 30, 2025 •

edited

Loading

jerome-pouiller Aug 1, 2025 •

edited

Loading

jerome-pouiller commented Aug 6, 2025 •

edited

Loading