[nrf fromtree] tests: pwm: pwm_gpio_loopback: add nrf platforms

tests/boards/espressif/wifi/socs/esp32c3_usb.overlay

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+/*
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&wifi {
+	status = "okay";
+};

tests/drivers/adc/adc_api/socs/esp32c3_usb.conf

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+CONFIG_ADC_ASYNC=n

tests/drivers/adc/adc_api/socs/esp32c3_usb.overlay

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+/*
+ * Copyright (c) 2022 Wolter HV <[email protected]>
+ * Copyright (c) 2023 Benjamin Björnsson <[email protected]>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	zephyr,user {
+		/* adjust channel number according to pinmux in board.dts */
+		io-channels = <&adc0 0>, <&adc0 1>;
+	};
+};
+
+&adc0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+
+	channel@1 {
+		reg = <1>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+};

tests/drivers/counter/counter_basic_api/socs/esp32c3_usb.overlay

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+&timer0 {
+	status = "okay";
+};
+
+&rtc {
+	slow-clk-src = <ESP32_RTC_SLOW_CLK_SRC_RC_FAST_D256>;
+};

tests/drivers/dma/chan_blen_transfer/socs/esp32c3_usb.conf

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+CONFIG_DMA_TRANSFER_CHANNEL_NR_0=5
+CONFIG_DMA_TRANSFER_CHANNEL_NR_1=0
+CONFIG_HEAP_MEM_POOL_SIZE=32768

tests/drivers/dma/chan_blen_transfer/socs/esp32c3_usb.overlay

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+/*
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&dma {
+	status = "okay";
+};
+
+tst_dma0: &dma { };

tests/drivers/dma/loop_transfer/socs/esp32c3_usb.conf

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+CONFIG_DMA_LOOP_TRANSFER_CHANNEL_NR=0
+CONFIG_DMA_LOOP_TRANSFER_SIZE=4094

tests/drivers/dma/loop_transfer/socs/esp32c3_usb.overlay

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+/*
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&dma {
+	status = "okay";
+};
+
+tst_dma0: &dma { };

tests/drivers/flash/common/socs/esp32c3_usb.conf

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+CONFIG_HEAP_MEM_POOL_SIZE=16384

tests/drivers/gpio/gpio_basic_api/socs/esp32c3_usb.overlay

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+/*
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	resources {
+		compatible = "test-gpio-basic-api";
+		out-gpios = <&gpio0 4 0>;
+		in-gpios = <&gpio0 5 0>;
+	};
+};

tests/drivers/pwm/pwm_api/socs/esp32c3_usb.overlay

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+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+ */
+
+#include <zephyr/dt-bindings/pwm/pwm.h>
+
+/ {
+	aliases {
+		pwm-0 = &ledc0;
+	};
+};
+
+&pinctrl {
+	ledc0_default: ledc0_default {
+		group1 {
+			pinmux = <LEDC_CH0_GPIO2>;
+			output-enable;
+		};
+	};
+};
+
+&ledc0 {
+	pinctrl-0 = <&ledc0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	channel0@0 {
+		reg = <0x0>;
+		timer = <0>;
+	};
+};

tests/drivers/pwm/pwm_gpio_loopback/CMakeLists.txt

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+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(pwm_gpio)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/drivers/pwm/pwm_gpio_loopback/Kconfig

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+# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+mainmenu "PWM GPIO loopback test"
+
+source "Kconfig.zephyr"
+
+config SAMPLING_TIME
+	int "Sampling wait time (ms)"
+	default 50
+	help
+	  Time to wait for PWM edge sampling, in milliseconds.
+
+config SKIP_EDGE_NUM
+	int "Number of edges to skip before sampling PWM"
+	default 2
+	help
+	  Number of PWM edges to skip before starting sampling.
+	  This parameter improves measurement precision as there can be significant
+	  latency in the first sampled edge.
+
+config ALLOWED_DEVIATION
+	int "Allowed deviation (%) for PWM timing checks"
+	default 5
+	range 0 100
+	help
+	  Maximum allowed deviation (%) from the programmed values for the test to be
+	  considered a PASS. For example, if set to 5, the measured period or duty cycle
+	  can deviate by up to 5% from the programmed values for the test to pass.

tests/drivers/pwm/pwm_gpio_loopback/boards/nrf54h20dk_nrf54h20_cpuapp.overlay

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+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Test requires wire connection between:
+ *  - PWM130 OUT[0] at P0.00 <-> GPIO input at P0.01
+ *  - PWM120 OUT[0] at P7.00 <-> GPIO input at P1.09
+ *  - PWM120 OUT[1] at P7.01 <-> GPIO input at P1.05
+ */
+
+/ {
+	zephyr,user {
+		pwms = <&pwm130 0 160000 PWM_POLARITY_NORMAL>,
+			<&pwm120 0 80000 PWM_POLARITY_NORMAL>,
+			<&pwm120 1 80000 PWM_POLARITY_NORMAL>;
+		gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>,
+			<&gpio1 9 GPIO_ACTIVE_HIGH>,
+			<&gpio1 5 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&pinctrl {
+	pwm130_default: pwm130_default {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 0, 0)>;
+		};
+	};
+
+	pwm130_sleep: pwm130_sleep {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 0, 0)>;
+			low-power-enable;
+		};
+	};
+
+	pwm120_default: pwm120_default {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 7, 0)>,
+				<NRF_PSEL(PWM_OUT1, 7, 1)>;
+		};
+	};
+	pwm120_sleep: pwm120_sleep {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 7, 0)>,
+				<NRF_PSEL(PWM_OUT1, 7, 1)>;
+			low-power-enable;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&pwm120 {
+	status = "okay";
+	pinctrl-0 = <&pwm120_default>;
+	pinctrl-1 = <&pwm120_sleep>;
+	pinctrl-names = "default", "sleep";
+	memory-regions = <&dma_fast_region>;
+};
+
+&dma_fast_region {
+	status = "okay";
+};

tests/drivers/pwm/pwm_gpio_loopback/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

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+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Test requires jumper between:
+ *  - PWM20 OUT[0] at P1.10 <-> GPIO input at P1.11
+ */
+
+/ {
+	zephyr,user {
+		pwms = <&pwm20 0 160000 PWM_POLARITY_NORMAL>;
+		gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+	};
+};

tests/drivers/pwm/pwm_gpio_loopback/prj.conf

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+CONFIG_PWM=y
+CONFIG_ZTEST=y

tests/drivers/pwm/pwm_gpio_loopback/socs/esp32_procpu.overlay

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+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
+ */
+
+#include <zephyr/dt-bindings/pwm/pwm.h>
+#include <zephyr/dt-bindings/gpio/gpio.h>
+#include <zephyr/dt-bindings/gpio/espressif-esp32-gpio.h>
+
+/ {
+	zephyr,user {
+		/* GPIO input pins order must match PWM pinctrl config */
+		gpios = <&gpio0 2 ESP32_GPIO_PIN_OUT_EN>,
+			<&gpio0 3 ESP32_GPIO_PIN_OUT_EN>,
+			<&gpio0 4 ESP32_GPIO_PIN_OUT_EN>,
+			<&gpio0 5 ESP32_GPIO_PIN_OUT_EN>;
+
+		pwms = <&ledc0 0 160000 PWM_POLARITY_NORMAL>,
+			<&ledc0 5 80000 PWM_POLARITY_INVERTED>,
+			<&ledc0 9 1000000 PWM_POLARITY_NORMAL>,
+			<&ledc0 10 1000000 PWM_POLARITY_INVERTED>;
+	};
+};
+
+&pinctrl {
+	ledc0_default: ledc0_default {
+		group1 {
+			pinmux = <LEDC_CH0_GPIO2>,
+				<LEDC_CH5_GPIO3>,
+				<LEDC_CH9_GPIO4>,
+				<LEDC_CH10_GPIO5>;
+			input-enable;
+		};
+	};
+};
+
+&ledc0 {
+	pinctrl-0 = <&ledc0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel0@0 {
+		reg = <0x0>;
+		timer = <0>;
+	};
+
+	channel5@5 {
+		reg = <0x5>;
+		timer = <1>;
+	};
+
+	/* HS channel */
+	channel9@9 {
+		reg = <0x9>;
+		timer = <0>;
+	};
+
+	/* share same timer with ch9 */
+	channel10@a {
+		reg = <0xa>;
+		timer = <0>;
+	};
+};

tests/drivers/pwm/pwm_gpio_loopback/socs/esp32c2.overlay

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+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+ */
+
+#include <zephyr/dt-bindings/pwm/pwm.h>
+#include <zephyr/dt-bindings/gpio/gpio.h>
+#include <zephyr/dt-bindings/gpio/espressif-esp32-gpio.h>
+
+/ {
+	zephyr,user {
+		/* GPIO input pins order must match PWM pinctrl config */
+		gpios = <&gpio0 2 ESP32_GPIO_PIN_OUT_EN>,
+			<&gpio0 3 ESP32_GPIO_PIN_OUT_EN>;
+
+		pwms = <&ledc0 0 160000 PWM_POLARITY_NORMAL>,
+			<&ledc0 5 80000 PWM_POLARITY_INVERTED>;
+	};
+};
+
+&pinctrl {
+	ledc0_default: ledc0_default {
+		group1 {
+			pinmux = <LEDC_CH0_GPIO2>,
+				<LEDC_CH5_GPIO3>;
+			input-enable;
+		};
+	};
+};
+
+&ledc0 {
+	pinctrl-0 = <&ledc0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel0@0 {
+		reg = <0x0>;
+		timer = <0>;
+	};
+
+	channel5@5 {
+		reg = <0x5>;
+		timer = <1>;
+	};
+};