From 4793e00ae803ae6b7948e4c110f7ceef11821ef5 Mon Sep 17 00:00:00 2001
From: Quy Tran <quy.tran.pz@renesas.com>
Date: Fri, 6 Sep 2024 04:47:16 +0000
Subject: [PATCH] boards: renesas: Add configurations to support pwm on
 EK-RA8D1

Add support for PWM driver on EK-RA8D1

Signed-off-by: Quy Tran <quy.tran.pz@renesas.com>
---
 boards/renesas/ek_ra8d1/doc/index.rst         |  2 +
 boards/renesas/ek_ra8d1/ek_ra8d1-pinctrl.dtsi | 11 ++++++
 boards/renesas/ek_ra8d1/ek_ra8d1.dts          |  8 ++++
 .../pwm/pwm_loopback/boards/ek_ra8d1.overlay  | 37 +++++++++++++++++++
 4 files changed, 58 insertions(+)
 create mode 100644 tests/drivers/pwm/pwm_loopback/boards/ek_ra8d1.overlay

diff --git a/boards/renesas/ek_ra8d1/doc/index.rst b/boards/renesas/ek_ra8d1/doc/index.rst
index 79a5dde2d90587..6b8f83272349f8 100644
--- a/boards/renesas/ek_ra8d1/doc/index.rst
+++ b/boards/renesas/ek_ra8d1/doc/index.rst
@@ -104,6 +104,8 @@ The below features are currently supported on Zephyr OS for EK-RA8D1 board:
 +--------------+------------+------------------+
 | FLASH        | on-chip    | flash            |
 +--------------+------------+------------------+
+| PWM          | on-chip    | pwm              |
++--------------+------------+------------------+
 
 Other hardware features are currently not supported by the port.
 
diff --git a/boards/renesas/ek_ra8d1/ek_ra8d1-pinctrl.dtsi b/boards/renesas/ek_ra8d1/ek_ra8d1-pinctrl.dtsi
index 57a0e064fbadb2..7dd8b9676f9a24 100644
--- a/boards/renesas/ek_ra8d1/ek_ra8d1-pinctrl.dtsi
+++ b/boards/renesas/ek_ra8d1/ek_ra8d1-pinctrl.dtsi
@@ -25,4 +25,15 @@
 			<RA_PSEL(RA_PSEL_SPI, 7, 3)>;
 		};
 	};
+
+	pwm7_default: pwm7_default {
+		group1 {
+			/* GTIOC7A */
+			psels = <RA_PSEL(RA_PSEL_GPT1, 10, 7)>;
+		};
+		group2 {
+			/* GTIOC7B */
+			psels = <RA_PSEL(RA_PSEL_GPT1, 10, 6)>;
+		};
+	};
 };
diff --git a/boards/renesas/ek_ra8d1/ek_ra8d1.dts b/boards/renesas/ek_ra8d1/ek_ra8d1.dts
index 4449e566c2dc28..1acd074322090c 100644
--- a/boards/renesas/ek_ra8d1/ek_ra8d1.dts
+++ b/boards/renesas/ek_ra8d1/ek_ra8d1.dts
@@ -124,3 +124,11 @@
 		};
 	};
 };
+
+&pwm7 {
+	pinctrl-0 = <&pwm7_default>;
+	interrupts = <40 1>, <41 1>;
+	interrupt-names = "gtioca", "overflow";
+	pinctrl-names = "default";
+	status = "okay";
+};
diff --git a/tests/drivers/pwm/pwm_loopback/boards/ek_ra8d1.overlay b/tests/drivers/pwm/pwm_loopback/boards/ek_ra8d1.overlay
new file mode 100644
index 00000000000000..6f4d6ea9660b35
--- /dev/null
+++ b/tests/drivers/pwm/pwm_loopback/boards/ek_ra8d1.overlay
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2024 Renesas Electronics Corporation
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/pwm/pwm.h>
+#include <zephyr/dt-bindings/pwm/ra_pwm.h>
+
+/ {
+	pwm_loopback_0 {
+		compatible = "test-pwm-loopback";
+		/* first index must be a 32-Bit timer */
+		pwms = <&pwm7 0 0 PWM_POLARITY_NORMAL>,
+			<&pwm9 0 0 PWM_POLARITY_NORMAL>;
+	};
+};
+
+&pinctrl {
+	pwm9_default: pwm9_default {
+		group1 {
+			/* GTIOC9A */
+			psels = <RA_PSEL(RA_PSEL_GPT1, 4, 11)>;
+		};
+		group2 {
+			/* GTIOC9B */
+			psels = <RA_PSEL(RA_PSEL_GPT1, 4, 10)>;
+		};
+	};
+};
+
+&pwm9 {
+	pinctrl-0 = <&pwm9_default>;
+	pinctrl-names = "default";
+	interrupts = <50 1>, <51 1>;
+	interrupt-names = "gtioca", "overflow";
+	status = "okay";
+};