From 8adb7c17ca4d6f8f366b681ada75f9fd38e617e8 Mon Sep 17 00:00:00 2001
From: Emilio Benavente <emilio.benavente@nxp.com>
Date: Wed, 3 Apr 2024 22:49:36 -0500
Subject: [PATCH] boards: nxp: frdm_mcxn947: PWM Support

Updated frdm_mcxn947 to add FlexPWM Support,
including updating the docs file.

Signed-off-by: Emilio Benavente <emilio.benavente@nxp.com>
---
 boards/nxp/frdm_mcxn947/doc/index.rst         |  2 ++
 .../frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi    | 28 +++++++++++++++++++
 boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi     |  5 ++++
 .../frdm_mcxn947_mcxn947_cpu0.dts             |  5 ++++
 .../frdm_mcxn947_mcxn947_cpu0.yaml            |  1 +
 5 files changed, 41 insertions(+)

diff --git a/boards/nxp/frdm_mcxn947/doc/index.rst b/boards/nxp/frdm_mcxn947/doc/index.rst
index 79f97f274dc..cdf14c1abbd 100644
--- a/boards/nxp/frdm_mcxn947/doc/index.rst
+++ b/boards/nxp/frdm_mcxn947/doc/index.rst
@@ -78,6 +78,8 @@ The FRDM-MCXN947 board configuration supports the following hardware features:
 +-----------+------------+-------------------------------------+
 | WATCHDOG  | on-chip    | watchdog                            |
 +-----------+------------+-------------------------------------+
+| PWM       | on-chip    | pwm                                 |
++-----------+------------+-------------------------------------+
 
 Targets available
 ==================
diff --git a/boards/nxp/frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi b/boards/nxp/frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi
index 13bd6950920..11bb253d66a 100644
--- a/boards/nxp/frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi
+++ b/boards/nxp/frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi
@@ -101,4 +101,32 @@
 			input-enable;
 		};
 	};
+
+	pinmux_flexpwm1_pwm0: pinmux_flexpwm1_pwm0 {
+		group0 {
+			pinmux = <PWM1_A0_PIO2_6>,
+				<PWM1_B0_PIO2_7>;
+			slew-rate = "fast";
+			drive-strength = "low";
+		};
+	};
+
+	pinmux_flexpwm1_pwm1: pinmux_flexpwm1_pwm1 {
+		group0 {
+			pinmux = <PWM1_A1_PIO2_4>,
+				<PWM1_B1_PIO2_5>;
+			slew-rate = "fast";
+			drive-strength = "low";
+		};
+	};
+
+	pinmux_flexpwm1_pwm2: pinmux_flexpwm1_pwm2 {
+		group0 {
+			pinmux = <PWM1_A2_PIO2_2>,
+				<PWM1_B2_PIO2_3>;
+			slew-rate = "fast";
+			drive-strength = "low";
+		};
+	};
+
 };
diff --git a/boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi b/boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi
index 22323d6422c..9418e4e6a66 100644
--- a/boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi
+++ b/boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi
@@ -168,3 +168,8 @@
 		status = "okay";
 	};
 };
+
+&flexpwm1_pwm0 {
+	pinctrl-0 = <&pinmux_flexpwm1_pwm0>;
+	pinctrl-names = "default";
+};
diff --git a/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.dts b/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.dts
index cbc18e92f0c..8653b410dcc 100644
--- a/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.dts
+++ b/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.dts
@@ -28,6 +28,7 @@
 
 	aliases{
 		watchdog0 = &wwdt0;
+		pwm-0 = &flexpwm1_pwm0;
 	};
 };
 
@@ -132,3 +133,7 @@
 &wwdt0 {
 	status = "okay";
 };
+
+&flexpwm1_pwm0 {
+	status = "okay";
+};
diff --git a/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.yaml b/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.yaml
index 1a4725a33ed..ebcaf6c9039 100644
--- a/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.yaml
+++ b/boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.yaml
@@ -21,4 +21,5 @@ supported:
   - dac
   - i2c
   - watchdog
+  - pwm
 vendor: nxp