tests: drivers: pwm: Add nRF7120 to platform allow list

Add nRF7120 to platform allow and integration platforms for
pwm_instance test and pwm_gpio_loopback test

Signed-off-by: Robert Robinson <[email protected]>

Author: rob-robinson-14

tests/drivers/pwm/pwm_instances/testcase.yaml

@@ -13,8 +13,10 @@ tests:
       - nrf54lm20dk/nrf54lm20a/cpuapp
       - [email protected]/nrf54ls05b/cpuapp
       - nrf54ls05dk/nrf54ls05b/cpuapp
+      - nrf7120pdk/nrf7120/cpuapp
     integration_platforms:
       - nrf54h20dk/nrf54h20/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54lm20dk/nrf54lm20a/cpuapp
       - nrf54ls05dk/nrf54ls05b/cpuapp
+      - nrf7120pdk/nrf7120/cpuapp

tests/zephyr/drivers/pwm/pwm_gpio_loopback/boards/nrf7120pdk_nrf7120_cpuapp.conf

@@ -0,0 +1 @@
+CONFIG_SKIP_EDGE_NUM=4

tests/zephyr/drivers/pwm/pwm_gpio_loopback/boards/nrf7120pdk_nrf7120_cpuapp.overlay

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ * Test requires wire connection between:
+ *  - PWM22 OUT[0] at P1.14 <-> GPIO input at P1.00
+ *  - PWM22 OUT[1] at P1.02 <-> GPIO input at P1.03
+ */
+
+/ {
+	zephyr,user {
+		pwms = <&pwm22 0 160000 PWM_POLARITY_NORMAL>,
+			<&pwm22 1 160000 PWM_POLARITY_NORMAL>;
+		gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>,
+			<&gpio1 3 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&pinctrl {
+	pwm22_alt: pwm22_alt {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 1, 14)>,
+				<NRF_PSEL(PWM_OUT1, 1, 2)>;
+		};
+	};
+
+	pwm22_alt_sleep: pwm22_alt_sleep {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 1, 14)>,
+				<NRF_PSEL(PWM_OUT1, 1, 2)>;
+			low-power-enable;
+		};
+	};
+};
+
+&pwm22 {
+	pinctrl-0 = <&pwm22_alt>;
+	pinctrl-1 = <&pwm22_alt_sleep>;
+	pinctrl-names = "default", "sleep";
+	status = "okay";
+};

tests/zephyr/drivers/pwm/pwm_gpio_loopback/testcase.yaml

@@ -12,5 +12,7 @@ tests:
     platform_allow:
       - [email protected]/nrf54ls05b/cpuapp
       - nrf54ls05dk/nrf54ls05b/cpuapp
+      - nrf7120pdk/nrf7120/cpuapp
     integration_platforms:
       - nrf54ls05dk/nrf54ls05b/cpuapp
+      - nrf7120pdk/nrf7120/cpuapp