tests: drivers: pwm: pwm_loopback: add support for nucleo_h753zi

add overlay with appropriate configuration for nucleo_h753zi

Signed-off-by: Fabrice DJIATSA <[email protected]>

Author: djiatsaf-st

tests/drivers/pwm/pwm_loopback/boards/nucleo_h753zi.overlay

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2025 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+/* PWM pins connection :
+ *
+ *  Perih   Pin   Hdr
+ *  pwm2    PA3  CN9:1
+ *  pwm5    PA0  CN10:29
+ *
+ * Short Pin PA3 to PA0, for the test to pass.
+ */
+
+#include <zephyr/dt-bindings/pwm/pwm.h>
+
+/ {
+	pwm_loopback_0 {
+		compatible = "test-pwm-loopback";
+		/* first index must be a 32-Bit timer */
+		pwms = <&pwm2 4 0 PWM_POLARITY_NORMAL>,
+		       <&pwm5 1 0 PWM_POLARITY_NORMAL>;
+	};
+};
+
+/* 32-Bit timers */
+&timers2 {
+	status = "okay";
+
+	pwm2: pwm {
+		status = "okay";
+		pinctrl-0 = <&tim2_ch4_pa3>; /* CN9 PIN1 A0 */
+		pinctrl-names = "default";
+	};
+};
+
+&timers5 {
+	status = "okay";
+
+	pwm5: pwm {
+		status = "okay";
+		pinctrl-0 = <&tim5_ch1_pa0>; /* CN10 PIN29 */
+		pinctrl-names = "default";
+
+		/* At least one of the test devices need to verify
+		 * the four-channel-capture-support in this test.
+		 */
+		four-channel-capture-support;
+	};
+};