tests: drivers: pwm: Add MCXWX flexio-pwm testing

Enabled testing for the flexio pwm on MCXW7X Platforms.

Signed-off-by: Emilio Benavente <emilio.benavente@nxp.com>

Author: EmilioCBen

boards/nxp/frdm_mcxw71/frdm_mcxw71-pinctrl.dtsi

@@ -80,4 +80,13 @@
 			slew-rate = "fast";
 		};
 	};
+
+	pinmux_flexio_pwm: pinmux_flexio_pwm {
+		group0 {
+			pinmux = <FLEXIO0_D20_PTC4>;
+			drive-strength = "low";
+			slew-rate = "fast";
+		};
+	};
+
 };

boards/nxp/frdm_mcxw71/frdm_mcxw71.yaml

@@ -12,6 +12,7 @@ supported:
   - can
   - counter
   - flash
+  - flexio
   - gpio
   - i2c
   - pinctrl

boards/nxp/frdm_mcxw72/frdm_mcxw72-pinctrl.dtsi

@@ -77,4 +77,12 @@
 			drive-open-drain;
 		};
 	};
+
+	pinmux_flexio_pwm: pinmux_flexio_pwm {
+		group0 {
+			pinmux = <FLEXIO0_D20_PTC4>;
+			drive-strength = "low";
+			slew-rate = "fast";
+		};
+	};
 };

boards/nxp/frdm_mcxw72/frdm_mcxw72_mcxw727c_cpu0.yaml

@@ -12,6 +12,7 @@ supported:
   - can
   - counter
   - gpio
+  - flexio
   - i2c
   - pinctrl
   - pwm

tests/drivers/pwm/pwm_api/boards/frdm_mcxw7x_flexio_pwm.overlay

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2025 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		pwm-0 = &flexio_pwm;
+	};
+};
+
+/* Conflicting gpio pins */
+&flexcan0 {
+	status = "disabled";
+};
+
+&flexio {
+	status = "okay";
+	flexio_pwm: flexio_pwm {
+		status = "okay";
+		pinctrl-0 = <&pinmux_flexio_pwm>;
+		pinctrl-names = "default";
+
+		pwm_0 {
+			pin-id = <20>;
+			prescaler = <1>;
+		};
+	};
+};

tests/drivers/pwm/pwm_api/src/test_pwm.c

@@ -75,6 +75,11 @@
 #define DEFAULT_PULSE_CYCLE 16384
 #define DEFAULT_PERIOD_NSEC 2000000
 #define DEFAULT_PULSE_NSEC 500000
+#elif defined(CONFIG_SOC_SERIES_MCXW)
+#define DEFAULT_PERIOD_CYCLE 64000
+#define DEFAULT_PULSE_CYCLE 32000
+#define DEFAULT_PERIOD_NSEC 4000000
+#define DEFAULT_PULSE_NSEC 2000000
 #else
 #define DEFAULT_PERIOD_CYCLE 64000
 #define DEFAULT_PULSE_CYCLE 32000

tests/drivers/pwm/pwm_api/testcase.yaml

@@ -53,3 +53,16 @@ tests:
       - native_sim
     integration_platforms:
       - native_sim
+  drivers.pwm.mcxw7x_flexio_pwm:
+    tags:
+      - drivers
+      - pwm
+      - userspace
+    extra_args: DTC_OVERLAY_FILE="boards/frdm_mcxw7x_flexio_pwm.overlay"
+    platform_allow:
+      - frdm_mcxw71
+      - frdm_mcxw72/mcxw727c/cpu0
+    filter: (dt_alias_exists("pwm-0") or dt_alias_exists("pwm-1") or dt_alias_exists("pwm-2")
+      or dt_alias_exists("pwm-3")) and CONFIG_DT_HAS_NXP_FLEXIO_ENABLED and
+      CONFIG_DT_HAS_NXP_FLEXIO_PWM_ENABLED
+    depends_on: pwm