boards: silabs: Add xg27 radio boards #96296

asmellby · 2025-09-19T15:32:40Z

Reformat xg27 soc devicetree files according to https://docs.zephyrproject.org/latest/contribute/style/devicetree.html and https://docs.kernel.org/devicetree/bindings/dts-coding-style.html:

Sort nodes by unit address or name
Sort properties by category and name

Add support for all socs in the xg27 family.

Add three xg27 radio boards: bg27_rb4110b, bg27_rb4111b and xg27_rb4194a.

github-actions · 2025-09-19T15:33:48Z

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

Name	Old Revision	New Revision	Diff
hal_silabs	zephyrproject-rtos/hal_silabs@`edbd418`	zephyrproject-rtos/hal_silabs@`b71ca6e` (`main`)	zephyrproject-rtos/hal_silabs@edbd4186..b71ca6e4

✅ All manifest checks OK

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

jerome-pouiller · 2025-09-19T15:51:12Z

boards/silabs/radio_boards/xg27/board.cmake

+board_runner_args(jlink "--device=EFR32MG27CxxxF768")
+else()
+board_runner_args(jlink "--device=EFR32BG27CxxxF768")
+endif()


Maybe:

string(TOUPPER ${CONFIG_SOC} JLINK_DEVICE) string(SUBSTRING 0 17 ${JLINK_DEVICE} JLINK_DEVICE) board_runner_args(jlink "--device=${JLINK_DEVICE}")

... can be done in another PR.

Won't have xxx in the middle...

Indeed (it seems the full chip name is sometime accepted by JLink, but not always). We probably need some more robust:

string(REGEX REPLACE "^(EF[RM]32[PFBM]G2[1-9][ABC])[0-9]*(F[0-9]*).*" "\\1xxx\\2" JLINK_DEVICE "${JLINK_DEVICE}")

jerome-pouiller · 2025-09-19T15:55:36Z

boards/silabs/radio_boards/xg27/bg27_rb411xb.dtsi

What is the risk to have a future rb4119b that does not match with this definition? That's said, I have not better proposal.

Very low. But if it happens, it doesn't need to include the generic .dtsi file.

Martinhoff-maker · 2025-09-22T07:47:59Z

soc/silabs/silabs_s2/xg27/Kconfig.soc

+	default "efr32bg27c230f768im32" if SOC_EFR32BG27C230F768IM32
+	default "efr32bg27c230f768im40" if SOC_EFR32BG27C230F768IM40
+	default "efr32bg27c320f768gj39" if SOC_EFR32BG27C320F768GJ39
+	default "efr32bg27c320f768ij39" if SOC_EFR32BG27C320F768IJ39


I think you miss the dtsi for this one ?

Good catch.

jhedberg

Looks good. Please update west.yml now that the corresponding module PR was merged.

nordicjm · 2025-09-22T09:49:01Z

boards/silabs/radio_boards/xg27/board.cmake

+# SPDX-License-Identifier: Apache-2.0
+
+if(CONFIG_BOARD_XG27_RB4194A)
+board_runner_args(jlink "--device=EFR32MG27CxxxF768")


2 space indent for cmake

Fixed, thanks!

kartben · 2025-09-22T10:06:21Z

boards/silabs/radio_boards/xg27/bg27_rb4111b.dts

+	model = "Silicon Labs BG27-RB4110B";
+	compatible = "silabs,bg27_rb4110b", "silabs,efr32bg27";


should be referring to bg27_rb4111b

Fixed, thanks!

kartben · 2025-09-22T10:07:14Z

boards/silabs/radio_boards/xg27/bg27_rb411xb.dtsi

+		compatible = "gpio-keys";
+
+		button0: button_0 {
+			gpios = <&gpiob 2 GPIO_ACTIVE_LOW>;


led0 and button0 on the same pin? probably a typo somewhere :)

They are on the same pin:

Oh I see. Then you'll want to disable either buttons or led node initially, or people trying to run the button sample are probably in for a surprise?

Hm. Disabling the LED node in board dts will prevent the blinky sample from working, so that's not a great solution. Maybe just removing the led0 alias in a board overlay for the button sample is the most sensible approach? Could also swap 0 and 1 around, but then the dts nodes don't match the silkscreen on the board...

boards/silabs/radio_boards/xg27/xg27_rb4194a.dts

nordicjm

rebase is needed

Set #address-cells and #size-cells on usart0. Since usarts can be used for both UART and SPI, this property shouldn't be set in SoC-level DTS, since it makes it harder to switch compatible. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Reformat devicetree files: * Sort nodes by unit address or name * Sort properties by category and name Add missing properties to existing nodes. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Add missing peripheral and clock nodes for xg27. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Add efr32bg27 and efr32mg27 socs. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Use cryptoacc variant on all xg27 socs. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Add 3 xg27 radio boards: * bg27_rb4110b * bg27_rb4111b * xg27_rb4194a Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Button 0 and LED 0 share a GPIO pin on bg27 boards. Remove the `led0` alias in a board overlay to make the button sample work out of the box. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

sonarqubecloud · 2025-09-23T16:31:43Z

Please retry analysis of this Pull-Request directly on SonarQube Cloud

kartben

there are probably a few other samples that might have incorrect out-of-the-box experience due to button/led overlap but this is probably fine given that the caveat is called out in the board's documentation

github-actions bot added manifest manifest-hal_silabs DNM (manifest) This PR should not be merged (controlled by action-manifest) labels Sep 19, 2025

zephyrbot added area: Crypto / RNG platform: Silabs Silicon Labs labels Sep 19, 2025

zephyrbot requested review from ceolin, jerome-pouiller, jhedberg, Martinhoff-maker, mnkp, rettichschnidi, tomi-font and yonsch September 19, 2025 15:34

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asmellby dismissed jerome-pouiller’s stale review via c085794 September 20, 2025 11:21

asmellby force-pushed the feature/xg27-board-support branch from 949a94a to c085794 Compare September 20, 2025 11:21

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boards/silabs/radio_boards/xg27/xg27_rb4194a.dts Show resolved Hide resolved

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asmellby force-pushed the feature/xg27-board-support branch from a7b54e5 to 8507332 Compare September 23, 2025 15:58

asmellby added 7 commits September 23, 2025 17:58

dts: arm: silabs: xg27: Reformat dtsi files

2f90d7b

Reformat devicetree files: * Sort nodes by unit address or name * Sort properties by category and name Add missing properties to existing nodes. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

dts: arm: silabs: xg27: Add missing nodes

bf8bfa9

Add missing peripheral and clock nodes for xg27. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

soc: silabs: Add complete xg27 soc family

9727156

Add efr32bg27 and efr32mg27 socs. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

drivers: entropy: gecko: Configure for all xg27 socs

9371b47

Use cryptoacc variant on all xg27 socs. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

boards: silabs: Add xg27 radio boards

b45a5ef

Add 3 xg27 radio boards: * bg27_rb4110b * bg27_rb4111b * xg27_rb4194a Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

samples: basic: button: Disable led on bg27 boards

81f94f1

Button 0 and LED 0 share a GPIO pin on bg27 boards. Remove the `led0` alias in a board overlay to make the button sample work out of the box. Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

asmellby force-pushed the feature/xg27-board-support branch from 8507332 to 81f94f1 Compare September 23, 2025 15:59

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cfriedt merged commit d3f531c into zephyrproject-rtos:main Sep 24, 2025
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		model = "Silicon Labs BG27-RB4110B";
		compatible = "silabs,bg27_rb4110b", "silabs,efr32bg27";

boards: silabs: Add xg27 radio boards #96296

boards: silabs: Add xg27 radio boards #96296

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