From bc0e4b6f4acf7f3bf841283847f2a3747fa1e0a7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20G=C5=82=C4=85b?= <sebastian.glab@nordicsemi.no>
Date: Fri, 13 Dec 2024 13:22:55 +0100
Subject: [PATCH] samples: peripheral: lpuart: Enable test execution on
 nrf54l20pdk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add overlays needed to execute lpuart tests on nrf54l20pdk.

Signed-off-by: Sebastian Głąb <sebastian.glab@nordicsemi.no>
---
 .../boards/nrf54l20pdk_nrf54l20_cpuapp.conf   |  9 ++++
 .../nrf54l20pdk_nrf54l20_cpuapp.overlay       | 52 +++++++++++++++++++
 samples/peripheral/lpuart/sample.yaml         |  6 ++-
 3 files changed, 65 insertions(+), 2 deletions(-)
 create mode 100644 samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.conf
 create mode 100644 samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay

diff --git a/samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.conf b/samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.conf
new file mode 100644
index 000000000000..0c494e5bcffb
--- /dev/null
+++ b/samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.conf
@@ -0,0 +1,9 @@
+#
+# Copyright (c) 2024 Nordic Semiconductor
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+CONFIG_UART_21_ASYNC=y
+CONFIG_UART_21_INTERRUPT_DRIVEN=n
+# Do not use interrupt driven API for console UART to not enable RX.
+CONFIG_UART_20_INTERRUPT_DRIVEN=n
diff --git a/samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay b/samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay
new file mode 100644
index 000000000000..6b6d835c13a3
--- /dev/null
+++ b/samples/peripheral/lpuart/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: LicenseRef-Nordic-5-Clause */
+
+&pinctrl {
+	uart21_default_alt: uart21_default_alt {
+		group1 {
+			psels = <NRF_PSEL(UART_RX, 1, 10)>,
+				<NRF_PSEL(UART_TX, 1, 11)>;
+		};
+	};
+
+	uart21_sleep_alt: uart21_sleep_alt {
+		group1 {
+			psels = <NRF_PSEL(UART_RX, 1, 10)>,
+				<NRF_PSEL(UART_TX, 1, 11)>;
+			low-power-enable;
+		};
+	};
+};
+
+&uart21 {
+	status = "okay";
+	pinctrl-0 = <&uart21_default_alt>;
+	pinctrl-1 = <&uart21_sleep_alt>;
+	pinctrl-names = "default", "sleep";
+	current-speed = <115200>;
+	lpuart: nrf-sw-lpuart {
+		compatible = "nordic,nrf-sw-lpuart";
+		status = "okay";
+		req-pin = <40>;
+		rdy-pin = <41>;
+	};
+};
+
+&gpiote20 {
+	status = "okay";
+};
+
+&uart20_default {
+	/* Disconnect CTS and RTS lines from pins.
+	 * This is a workaround for increased current consumption
+	 * (~250 uA more).
+	 */
+	group1 {
+		psels = <NRF_PSEL(UART_TX, 1, 4)>,
+			<NRF_PSEL_DISCONNECTED(UART_RTS)>;
+	};
+	group2 {
+		psels = <NRF_PSEL(UART_RX, 1, 5)>,
+			<NRF_PSEL_DISCONNECTED(UART_CTS)>;
+		bias-pull-up;
+	};
+};
diff --git a/samples/peripheral/lpuart/sample.yaml b/samples/peripheral/lpuart/sample.yaml
index 641f90bb3f74..9006dcfb9d4e 100644
--- a/samples/peripheral/lpuart/sample.yaml
+++ b/samples/peripheral/lpuart/sample.yaml
@@ -18,6 +18,7 @@ tests:
       - nrf54l15dk/nrf54l05/cpuapp
       - nrf54l15dk/nrf54l10/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54l20pdk/nrf54l20/cpuapp
     integration_platforms:
       - nrf52dk/nrf52832
       - nrf52833dk/nrf52833
@@ -47,6 +48,7 @@ tests:
       - nrf54l15dk/nrf54l05/cpuapp
       - nrf54l15dk/nrf54l10/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54l20pdk/nrf54l20/cpuapp
     integration_platforms:
       - nrf52840dk/nrf52840
     extra_configs:
@@ -85,7 +87,7 @@ tests:
       - nrf54l15dk/nrf54l15/cpuapp
     platform_allow: nrf52dk/nrf52832 nrf52833dk/nrf52833 nrf52840dk/nrf52840 nrf9160dk/nrf9160/ns
       nrf5340dk/nrf5340/cpuapp nrf21540dk/nrf52840 nrf54l15dk/nrf54l05/cpuapp
-      nrf54l15dk/nrf54l10/cpuapp nrf54l15dk/nrf54l15/cpuapp
+      nrf54l15dk/nrf54l10/cpuapp nrf54l15dk/nrf54l15/cpuapp nrf54l20pdk/nrf54l20/cpuapp
     tags: ppk_power_measure
     harness: pytest
     harness_config:
@@ -114,7 +116,7 @@ tests:
       - nrf54l15dk/nrf54l15/cpuapp
     platform_allow: nrf52dk/nrf52832 nrf52833dk/nrf52833 nrf52840dk/nrf52840 nrf9160dk/nrf9160/ns
       nrf5340dk/nrf5340/cpuapp nrf21540dk/nrf52840 nrf54l15dk/nrf54l05/cpuapp
-      nrf54l15dk/nrf54l10/cpuapp nrf54l15dk/nrf54l15/cpuapp
+      nrf54l15dk/nrf54l10/cpuapp nrf54l15dk/nrf54l15/cpuapp nrf54l20pdk/nrf54l20/cpuapp
     harness: console
     harness_config:
       fixture: gpio_loopback