From 0f5731e559ce95a84614cbcbfad6f88b14d6224e Mon Sep 17 00:00:00 2001
From: Francois Ramu <francois.ramu@st.com>
Date: Tue, 22 Mar 2022 11:06:52 +0100
Subject: [PATCH] samples: blinky pwm running on the nucleo_l4r5zi

Adding an overlay to configure the nucleo_l4r5zi for testing the pwm
blinky application on red led (PB14 on nucleo board)
Each has a specific pwm output from different timers/channels

Signed-off-by: Francois Ramu <francois.ramu@st.com>
GitOrigin-RevId: 8043fb922a4e682cf38dda4476f7a1f3357eb981
Change-Id: If69f9d5d32ac716e1ba9daf3ce36a868a59051d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/3562859
Tested-by: CopyBot Service Account <copybot.service@gmail.com>
Reviewed-by: Keith Short <keithshort@chromium.org>
Commit-Queue: Keith Short <keithshort@chromium.org>
Tested-by: Keith Short <keithshort@chromium.org>
---
 .../blinky_pwm/boards/nucleo_l4r5zi.overlay   | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 samples/basic/blinky_pwm/boards/nucleo_l4r5zi.overlay

diff --git a/samples/basic/blinky_pwm/boards/nucleo_l4r5zi.overlay b/samples/basic/blinky_pwm/boards/nucleo_l4r5zi.overlay
new file mode 100644
index 00000000000..7e40a648008
--- /dev/null
+++ b/samples/basic/blinky_pwm/boards/nucleo_l4r5zi.overlay
@@ -0,0 +1,32 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2022 STMicroelectronics
+ */
+
+#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/pwm/stm32_pwm.h>
+
+/ {
+	pwmleds {
+		compatible = "pwm-leds";
+
+		red_pwm_led: red_pwm_led {
+			pwms = <&pwm1 2 4 (PWM_POLARITY_NORMAL | PWM_STM32_COMPLEMENTARY)>;
+		};
+	};
+
+	aliases {
+		pwm-led0 = &red_pwm_led;
+	};
+};
+
+&timers1 {
+	status = "okay";
+
+	pwm1: pwm {
+		status = "okay";
+		pinctrl-0 = <&tim1_ch2n_pb14>;
+		pinctrl-names = "default";
+	};
+};