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tests: zephyr: drivers: pwm: Enable loopback test on nRF54LM20A
Add overlay required to run pwm_gpio_loopback test on nrf54lm20apdk/nrf54lm20a/cpuapp. Signed-off-by: Sebastian Głąb <[email protected]>
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‎CODEOWNERS‎

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/tests/zephyr/drivers/i2c/i2c_target_api/ @nrfconnect/ncs-low-level-test
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/tests/zephyr/drivers/i2s/ @nrfconnect/ncs-low-level-test
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/tests/zephyr/drivers/mspi/api/ @nrfconnect/ncs-low-level-test @nrfconnect/ncs-ll-ursus
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/tests/zephyr/drivers/pwm/ @nrfconnect/ncs-low-level-test
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/tests/zephyr/drivers/retained_mem/ @nrfconnect/ncs-low-level-test
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/tests/zephyr/drivers/sensor/ @nrfconnect/ncs-low-level-test
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/tests/zephyr/drivers/spi/ @nrfconnect/ncs-low-level-test

‎scripts/ci/tags.yaml‎

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files:
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- nrf/tests/zephyr/subsys/settings/performance/
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- zephyr/tests/subsys/settings/performance/
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ci_tests_zephyr_drivers_pwm:
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files:
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- nrf/tests/zephyr/drivers/pwm/
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- zephyr/tests/drivers/pwm/

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/CMakeLists.txt‎

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#
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# Copyright (c) 2025 Nordic Semiconductor ASA
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#
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# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
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#
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(pwm_gpio)
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FILE(GLOB app_sources ${ZEPHYR_BASE}/tests/drivers/pwm/pwm_gpio_loopback/src/*.c)
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target_sources(app PRIVATE ${app_sources})

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/Kconfig‎

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source "tests/drivers/pwm/pwm_gpio_loopback/Kconfig"

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/README.txt‎

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This sample extends the same-named Zephyr sample to verify it with Nordic development kits.
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Source code and basic configuration files can be found in the corresponding folder structure in zephyr/tests/drivers/pwm/pwm_gpio_loopback

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/boards/nrf54lm20apdk_nrf54lm20a_cpuapp.conf‎

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CONFIG_SKIP_EDGE_NUM=4

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/boards/nrf54lm20apdk_nrf54lm20a_cpuapp.overlay‎

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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* SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
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*
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* Test requires jumper between:
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* - PWM20 OUT[0] at P1.29 <-> GPIO input at P1.19
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*/
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/ {
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zephyr,user {
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pwms = <&pwm20 0 160000 PWM_POLARITY_NORMAL>;
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gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
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};
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};

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/boards/nrf54lm20apdk_nrf54lm20a_cpuapp_0_0_0.conf‎

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CONFIG_SKIP_EDGE_NUM=4

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/boards/nrf54lm20apdk_nrf54lm20a_cpuapp_0_0_0.overlay‎

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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* SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
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*
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* Test requires jumper between:
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* - PWM20 OUT[0] at P1.10 <-> GPIO input at P1.11
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*/
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&pinctrl {
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pwm20_alt: pwm20_alt {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 1, 10)>;
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};
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};
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pwm20_alt_sleep: pwm20_alt_sleep {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 1, 10)>;
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low-power-enable;
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};
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};
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};
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&pwm20 {
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pinctrl-0 = <&pwm20_alt>;
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pinctrl-1 = <&pwm20_alt_sleep>;
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pinctrl-names = "default", "sleep";
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};
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/ {
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zephyr,user {
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pwms = <&pwm20 0 160000 PWM_POLARITY_NORMAL>;
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gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
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};
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};

‎tests/zephyr/drivers/pwm/pwm_gpio_loopback/prj.conf‎

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CONFIG_PWM=y
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CONFIG_ZTEST=y

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