boards: arm: add initial support for efr32bg22_brd4184b

This adds basic support for 'B' revision of the Silicon Labs EFR32BG
BRD4184 (Thunderboard BG22) board. Due to missing drivers, some of the
on-board peripherals are currently unsupported:

- Silicon Labs Si7021 relative humidity and temperature sensor
- Vishay VEML6035 ambient light sensor
- Knowles SPK0641HT4H-1 MEMS microphones
- TDK InvenSense ICM-20648 6-axis inertial sensor

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

boards/arm/efr32_thunderboard/Kconfig.board

@@ -8,6 +8,11 @@ config BOARD_EFR32BG22_BRD4184A
 	depends on SOC_SERIES_EFR32BG22
 	select SOC_PART_NUMBER_EFR32BG22C224F512IM40
 
+config BOARD_EFR32BG22_BRD4184B
+	bool "SiLabs EFR32BG22-BRD4184B (Thunderboard EFR32BG22)"
+	depends on SOC_SERIES_EFR32BG22
+	select SOC_PART_NUMBER_EFR32BG22C224F512IM40
+
 config BOARD_EFR32BG27_BRD2602A
 	bool "SiLabs EFR32BG27-BRD2602A (EFR32BG27 +8 dBm Dev Kit Board)"
 	depends on SOC_SERIES_EFR32BG27

boards/arm/efr32_thunderboard/Kconfig.defconfig

@@ -10,6 +10,13 @@ config BOARD
 
 endif # BOARD_EFR32BG22_BRD4184A
 
+if BOARD_EFR32BG22_BRD4184B
+
+config BOARD
+	default "efr32bg22_brd4184b"
+
+endif # BOARD_EFR32BG22_BRD4184B
+
 if BOARD_EFR32BG27_BRD2602A
 
 config BOARD

boards/arm/efr32_thunderboard/board.cmake

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
-if(CONFIG_BOARD_EFR32BG22_BRD4184A)
+if(CONFIG_BOARD_EFR32BG22_BRD4184A OR CONFIG_BOARD_EFR32BG22_BRD4184B)
 board_runner_args(jlink "--device=EFR32BG22C224F512IM40" "--reset-after-load")
 include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
 

boards/arm/efr32_thunderboard/efr32bg22_brd4184.dtsi

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2021 Sateesh Kotapati
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "thunderboard.dtsi"
+
+/ {
+	/* These aliases are provided for compatibility with samples */
+	aliases {
+		led0 = &led0;
+		sw0 = &button0;
+		spi-flash0 = &mx25r80;
+		spi0 = &usart0;
+		watchdog0 = &wdog0;
+		/* If enabled, MCUboot uses this for recovery mode entrance */
+		mcuboot-led0 = &led0;
+		mcuboot-button0 = &button0;
+	};
+
+	chosen {
+		zephyr,code-partition = &slot0_partition;
+	};
+};
+
+&flash0 {
+	partitions {
+		/* Reserve 48 KiB for the bootloader */
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 0x0000c000>;
+			read-only;
+		};
+
+		/* Reserve 224 KiB for the application in slot 0 */
+		slot0_partition: partition@c000 {
+			label = "image-0";
+			reg = <0x0000c000 0x00038000>;
+		};
+
+		/* Reserve 224 KiB for the application in slot 1 */
+		slot1_partition: partition@44000 {
+			label = "image-1";
+			reg = <0x00044000 0x00038000>;
+		};
+
+		/* Set 16 KiB of storage at the end of the 512 KiB of flash */
+		storage_partition: partition@7c000 {
+			label = "storage";
+			reg = <0x0007c000 0x00004000>;
+		};
+	};
+};
+
+&sw_imu_enable {
+	enable-gpios = <&gpiob GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
+};

boards/arm/efr32_thunderboard/efr32bg22_brd4184a.dts

@@ -7,69 +7,18 @@
 /dts-v1/;
 #include <silabs/efr32bg22.dtsi>
 #include <silabs/efr32bg2x-pinctrl.dtsi>
-#include "thunderboard.dtsi"
+#include "efr32bg22_brd4184.dtsi"
 
 / {
 	model = "Silicon Labs EFR32BG BRD4184A (aka Thunderboard BG22)";
-	compatible = "silabs,efr32bg22c224f512im40", "silabs,efr32bg_brd4184",
+	compatible = "silabs,efr32bg22c224f512im40", "silabs,efr32bg_brd4184a",
 		"silabs,efr32bg22";
-
-	/* These aliases are provided for compatibility with samples */
-	aliases {
-		led0 = &led0;
-		sw0 = &button0;
-		spi-flash0 = &mx25r80;
-		spi0 = &usart0;
-		watchdog0 = &wdog0;
-		/* If enabled, MCUboot uses this for recovery mode entrance */
-		mcuboot-led0 = &led0;
-		mcuboot-button0 = &button0;
-	};
-
-	chosen {
-		zephyr,code-partition = &slot0_partition;
-	};
-};
-
-&flash0 {
-	partitions {
-		/* Reserve 48 KiB for the bootloader */
-		boot_partition: partition@0 {
-			label = "mcuboot";
-			reg = <0x00000000 0x0000c000>;
-			read-only;
-		};
-
-		/* Reserve 224 KiB for the application in slot 0 */
-		slot0_partition: partition@c000 {
-			label = "image-0";
-			reg = <0x0000c000 0x00038000>;
-		};
-
-		/* Reserve 224 KiB for the application in slot 1 */
-		slot1_partition: partition@44000 {
-			label = "image-1";
-			reg = <0x00044000 0x00038000>;
-		};
-
-		/* Set 16 KiB of storage at the end of the 512 KiB of flash */
-		storage_partition: partition@7c000 {
-			label = "storage";
-			reg = <0x0007c000 0x00004000>;
-		};
-	};
 };
 
 &sw_sensor_enable {
 	enable-gpios = <&gpioa GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
 };
 
-
 &sw_mic_enable {
 	enable-gpios = <&gpioa GECKO_PIN(0) GPIO_ACTIVE_HIGH>;
 };
-
-
-&sw_imu_enable {
-	enable-gpios = <&gpiob GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
-};

boards/arm/efr32_thunderboard/efr32bg22_brd4184b.dts

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2021 Sateesh Kotapati
+ * Copyright (c) 2023 Piotr Dymacz
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <silabs/efr32bg22.dtsi>
+#include <silabs/efr32bg2x-pinctrl.dtsi>
+#include "efr32bg22_brd4184.dtsi"
+
+/ {
+	model = "Silicon Labs EFR32BG BRD4184B (aka Thunderboard BG22)";
+	compatible = "silabs,efr32bg22c224f512im40", "silabs,efr32bg_brd4184b",
+		"silabs,efr32bg22";
+};
+
+&button0 {
+	gpios = <&gpiob GECKO_PIN(3) GPIO_ACTIVE_LOW>;
+};
+
+&led0 {
+	gpios = <&gpioa GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
+};
+
+&sw_sensor_enable {
+	enable-gpios = <&gpioc GECKO_PIN(6) GPIO_ACTIVE_HIGH>;
+};
+
+&sw_mic_enable {
+	enable-gpios = <&gpioc GECKO_PIN(7) GPIO_ACTIVE_HIGH>;
+};

boards/arm/efr32_thunderboard/efr32bg22_brd4184b.yaml

@@ -0,0 +1,20 @@
+identifier: efr32bg22_brd4184b
+name: EFR32BG22-BRD4184B
+type: mcu
+arch: arm
+ram: 32
+flash: 512
+toolchain:
+  - zephyr
+  - gnuarmemb
+  - xtools
+supported:
+  - counter
+  - gpio
+  - uart
+  - i2c
+  - spi
+testing:
+  ignore_tags:
+    - net
+    - bluetooth

boards/arm/efr32_thunderboard/efr32bg22_brd4184b_defconfig

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_ARM_MPU=y
+CONFIG_SOC_SERIES_EFR32BG22=y
+CONFIG_BOARD_EFR32BG22_BRD4184B=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+CONFIG_SERIAL=y
+CONFIG_GPIO=y
+CONFIG_SOC_GECKO_EMU_DCDC=y
+CONFIG_SOC_GECKO_EMU_DCDC_MODE_ON=y
+CONFIG_HW_STACK_PROTECTION=y
+CONFIG_PINCTRL=y
+
+# Used if SysTick is enabled, ignored for BURTC
+# (BURTC uses TIMER_READS_ITS_FREQUENCY_AT_RUNTIME)
+CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=76800000
+
+# Use BURTC as system clock source
+CONFIG_GECKO_BURTC_TIMER=y
+CONFIG_CMU_BURTCCLK_LFXO=y
+CONFIG_SYS_CLOCK_TICKS_PER_SEC=1024

west.yml

@@ -214,7 +214,7 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: 5fbe78d3676b5500585f8e4534a8e56e7dae74a8
+      revision: fbb47a4067c460a2c26917ff34189fb4f32f654f
       path: modules/hal/silabs
       groups:
         - hal