drivers: gpio: silabs: gpio driver for EFR series 2 devices

Added the gpio driver for EFR series 2 devices.

The SILABS_SISDK_GPIO symbol is added to enable
support for the new GPIO driver.
The SOC_GECKO_GPIO symbol is retained for now to
maintain compatibility with existing drivers and
will be removed in a subsequent commit.

Signed-off-by: S Mohamed Fiaz <[email protected]>

Author: fimohame

boards/arduino/nano_matter/arduino_nano_matter.dts

@@ -176,7 +176,6 @@
 };
 
 &gpio {
-	location-swo = <0>;
 	status = "okay";
 };
 

boards/seeed/xiao_mg24/xiao_mg24.dts

@@ -141,7 +141,6 @@
 };
 
 &gpio {
-	location-swo = <0>;
 	status = "okay";
 };
 

boards/silabs/dev_kits/sltb010a/thunderboard.dtsi

@@ -119,7 +119,6 @@
 };
 
 &gpio {
-	location-swo = <0>;
 	status = "okay";
 };
 

boards/silabs/dev_kits/xg27_dk2602a/thunderboard.dtsi

@@ -119,7 +119,6 @@
 };
 
 &gpio {
-	location-swo = <0>;
 	status = "okay";
 };
 

boards/silabs/radio_boards/xg24_rb4187c/xg24_rb4187c.dts

@@ -183,7 +183,6 @@
 };
 
 &gpio {
-	location-swo = <0>;
 	status = "okay";
 };
 

drivers/gpio/CMakeLists.txt

@@ -100,6 +100,7 @@ zephyr_library_sources_ifdef(CONFIG_GPIO_SAM4L      gpio_sam4l.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_SEDI    gpio_sedi.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_SI32       gpio_si32.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_SIFIVE     gpio_sifive.c)
+zephyr_library_sources_ifdef(CONFIG_GPIO_SILABS     gpio_silabs.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_SILABS_SIWX91X gpio_silabs_siwx91x.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_SILABS_SIWX91X_UULP gpio_silabs_siwx91x_uulp.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_SMARTBOND  gpio_smartbond.c)

drivers/gpio/Kconfig

@@ -184,6 +184,7 @@ source "drivers/gpio/Kconfig.sc18im704"
 source "drivers/gpio/Kconfig.sedi"
 source "drivers/gpio/Kconfig.si32"
 source "drivers/gpio/Kconfig.sifive"
+source "drivers/gpio/Kconfig.silabs"
 source "drivers/gpio/Kconfig.siwx91x"
 source "drivers/gpio/Kconfig.smartbond"
 source "drivers/gpio/Kconfig.sn74hc595"

drivers/gpio/Kconfig.silabs

@@ -0,0 +1,19 @@
+# Copyright (c) 2025 Silicon Laboratories Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+menuconfig GPIO_SILABS
+	bool "Silabs GPIO driver"
+	default y
+	depends on DT_HAS_SILABS_GPIO_ENABLED
+	select SILABS_SISDK_GPIO
+	help
+	  Enable the Silabs gpio driver.
+
+if GPIO_SILABS
+
+config GPIO_SILABS_COMMON_INIT_PRIORITY
+	int "Common initialization priority"
+	depends on GPIO_SILABS
+	default 39
+
+endif # GPIO_SILABS