drivers: clock_control: silabs: Add clock control driver

Add clock control driver for Silicon Labs Series 2 and newer.

Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

tests/drivers/clock_control/clock_control_api/src/silabs_device_subsys.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2024 Silicon Laboratories Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "device_subsys.h"
+#include <zephyr/drivers/clock_control/clock_control_silabs.h>
+
+struct silabs_clock_control_cmu_config i2c0_clock = {
+	.bus_clock = CLOCK_I2C0,
+	.branch = CLOCK_BRANCH_LSPCLK,
+};
+
+struct silabs_clock_control_cmu_config wdog0_clock = {
+	.bus_clock = CLOCK_WDOG0,
+	.branch = CLOCK_BRANCH_WDOG0CLK,
+};
+
+static const struct device_subsys_data subsys_data[] = {
+	{.subsys = (void *)&i2c0_clock},
+	{.subsys = (void *)&wdog0_clock},
+};
+
+static const struct device_data devices[] = {
+	{
+		.dev = DEVICE_DT_GET_ONE(silabs_series_clock),
+		.subsys_data =  subsys_data,
+		.subsys_cnt = ARRAY_SIZE(subsys_data)
+	}
+};

tests/drivers/clock_control/clock_control_api/src/test_clock_control.c

@@ -12,6 +12,8 @@ LOG_MODULE_REGISTER(test);
 #include "nrf_device_subsys.h"
 #elif DT_HAS_COMPAT_STATUS_OKAY(espressif_esp32_rtc)
 #include "esp32_device_subsys.h"
+#elif DT_HAS_COMPAT_STATUS_OKAY(silabs_series_clock)
+#include "silabs_device_subsys.h"
 #else
 #error "Unsupported board"
 #endif

tests/drivers/clock_control/clock_control_api/testcase.yaml

@@ -10,6 +10,9 @@ tests:
       - esp32c3_devkitm
       - esp32s2_saola
       - esp32s3_devkitm/esp32s3/procpu
+      - sltb010a@0
+      - xg24_dk2601b
+      - xg27_dk2602a
   drivers.clock.clock_control_nrf5:
     platform_allow:
       - nrf51dk/nrf51822