diff --git a/boards/arm/efm32pg_stk3402a/efm32pg_stk3402a.dts b/boards/arm/efm32pg_stk3402a/efm32pg_stk3402a.dts
index b49ea348e8b..f89f1c09170 100644
--- a/boards/arm/efm32pg_stk3402a/efm32pg_stk3402a.dts
+++ b/boards/arm/efm32pg_stk3402a/efm32pg_stk3402a.dts
@@ -69,3 +69,8 @@
 	location = <15>;
 	status = "ok";
 };
+
+&gpio {
+	location-swo = <0>;
+	status = "ok";
+};
diff --git a/dts/arm/silabs/efm32pg12b.dtsi b/dts/arm/silabs/efm32pg12b.dtsi
index 69b4b857540..688dd45cf97 100644
--- a/dts/arm/silabs/efm32pg12b.dtsi
+++ b/dts/arm/silabs/efm32pg12b.dtsi
@@ -117,7 +117,7 @@
 			status = "disabled";
 		};
 
-		gpio@4000a400 {
+		gpio: gpio@4000a400 {
 			compatible = "silabs,efm32-gpio";
 			reg = <0x4000a400 0xf00>;
 			interrupts = <1 2 11 2>;
diff --git a/dts/bindings/gpio/silabs,efm32-gpio.yaml b/dts/bindings/gpio/silabs,efm32-gpio.yaml
index 437ea5e80f9..2ec35e9308d 100644
--- a/dts/bindings/gpio/silabs,efm32-gpio.yaml
+++ b/dts/bindings/gpio/silabs,efm32-gpio.yaml
@@ -31,4 +31,9 @@ properties:
       description: Human readable string describing the device (used by Zephyr for API name)
       generation: define
 
+    location-swo:
+      type: int
+      category: optional
+      description: Serial Wire Output (SWO) PIN location
+      generation: define
 ...
diff --git a/soc/arm/silabs_exx32/efm32pg12b/Kconfig.defconfig.efm32pg12b b/soc/arm/silabs_exx32/efm32pg12b/Kconfig.defconfig.efm32pg12b
index 4fa8b4c9e39..4304a9b2e14 100644
--- a/soc/arm/silabs_exx32/efm32pg12b/Kconfig.defconfig.efm32pg12b
+++ b/soc/arm/silabs_exx32/efm32pg12b/Kconfig.defconfig.efm32pg12b
@@ -8,12 +8,12 @@
 
 if SOC_SERIES_EFM32PG12B
 
-if GPIO
+if GPIO || LOG_BACKEND_SWO
 
 config GPIO_GECKO
 	default y
 
-endif # GPIO
+endif # GPIO || LOG_BACKEND_SWO
 
 if SERIAL
 
diff --git a/soc/arm/silabs_exx32/efm32pg12b/Kconfig.series b/soc/arm/silabs_exx32/efm32pg12b/Kconfig.series
index 036682a6498..c34b2ace4d5 100644
--- a/soc/arm/silabs_exx32/efm32pg12b/Kconfig.series
+++ b/soc/arm/silabs_exx32/efm32pg12b/Kconfig.series
@@ -8,6 +8,7 @@
 config SOC_SERIES_EFM32PG12B
 	bool "EFM32PG12B Series MCU"
 	select HAS_SILABS_GECKO
+	select HAS_SWO
 	select CPU_CORTEX_M4
 	select CPU_HAS_FPU
 	select SOC_FAMILY_EXX32
diff --git a/soc/arm/silabs_exx32/efm32pg12b/dts_fixup.h b/soc/arm/silabs_exx32/efm32pg12b/dts_fixup.h
index ef6ec11355a..7e54a999752 100644
--- a/soc/arm/silabs_exx32/efm32pg12b/dts_fixup.h
+++ b/soc/arm/silabs_exx32/efm32pg12b/dts_fixup.h
@@ -16,6 +16,7 @@
 #define DT_GPIO_GECKO_COMMON_EVEN_PRI	DT_SILABS_EFM32_GPIO_4000A400_IRQ_GPIO_EVEN_PRIORITY
 #define DT_GPIO_GECKO_COMMON_ODD_IRQ	DT_SILABS_EFM32_GPIO_4000A400_IRQ_GPIO_ODD
 #define DT_GPIO_GECKO_COMMON_ODD_PRI	DT_SILABS_EFM32_GPIO_4000A400_IRQ_GPIO_ODD_PRIORITY
+#define DT_GPIO_GECKO_SWO_LOCATION	DT_SILABS_EFM32_GPIO_4000A400_LOCATION_SWO
 
 #define DT_GPIO_GECKO_PORTA_NAME	DT_SILABS_EFM32_GPIO_PORT_4000A000_LABEL
 #define DT_GPIO_GECKO_PORTB_NAME	DT_SILABS_EFM32_GPIO_PORT_4000A030_LABEL
diff --git a/soc/arm/silabs_exx32/efm32pg12b/soc_pinmap.h b/soc/arm/silabs_exx32/efm32pg12b/soc_pinmap.h
index 43e3d87cca4..0bb76d18fff 100644
--- a/soc/arm/silabs_exx32/efm32pg12b/soc_pinmap.h
+++ b/soc/arm/silabs_exx32/efm32pg12b/soc_pinmap.h
@@ -16,6 +16,21 @@
 #include <soc.h>
 #include <em_gpio.h>
 
+#ifdef CONFIG_GPIO_GECKO
+/* Serial Wire Output (SWO) */
+#if (DT_GPIO_GECKO_SWO_LOCATION == 0)
+#define PIN_SWO {gpioPortF, 2, gpioModePushPull, 1}
+#elif (DT_GPIO_GECKO_SWO_LOCATION == 1)
+#define PIN_SWO {gpioPortB, 13, gpioModePushPull, 1}
+#elif (DT_GPIO_GECKO_SWO_LOCATION == 2)
+#define PIN_SWO {gpioPortD, 15, gpioModePushPull, 1}
+#elif (DT_GPIO_GECKO_SWO_LOCATION == 3)
+#define PIN_SWO {gpioPortC, 11, gpioModePushPull, 1}
+#elif (DT_GPIO_GECKO_SWO_LOCATION >= 4)
+#error ("Invalid SWO pin location")
+#endif
+#endif /* CONFIG_GPIO_GECKO */
+
 #ifdef CONFIG_USART_GECKO_0
 #if (DT_SILABS_GECKO_USART_USART_0_GPIO_LOC == 0)
 #define PIN_USART0_TXD {gpioPortA, 0, gpioModePushPull, 1}