boards: nxp: frdm_ke17z and frdm_ke17z512: add ftm and pwt pwm support

Add ftm pinctrl configuration, and enable ftm2 to support pwm-led.

Signed-off-by: Anke Xiao <anke.xiao@nxp.com>

boards/nxp/frdm_ke17z/doc/index.rst

@@ -65,6 +65,8 @@ features:
 +-----------+------------+-------------------------------------+
 | DMA       | on-chip    | dma                                 |
 +-----------+------------+-------------------------------------+
+| FTM       | on-chip    | pwm                                 |
++-----------+------------+-------------------------------------+
 | I2C       | on-chip    | i2c                                 |
 +-----------+------------+-------------------------------------+
 | ACMP      | on-chip    | sensor                              |

boards/nxp/frdm_ke17z/frdm_ke17z-pinctrl.dtsi

@@ -25,6 +25,16 @@
 		};
 	};
 
+	ftm2_default: ftm2_default {
+		group0 {
+			pinmux = <FTM2_CH0_PTD10>,
+				<FTM2_CH1_PTD11>,
+				<FTM2_CH2_PTD12>;
+			drive-strength = "low";
+			slew-rate = "slow";
+		};
+	};
+
 	lpi2c0_default: lpi2c0_default {
 		group0 {
 			pinmux = <LPI2C0_SDA_PTA16>,

boards/nxp/frdm_ke17z/frdm_ke17z.dts

@@ -9,6 +9,7 @@
 #include <nxp/nxp_ke17z.dtsi>
 #include "frdm_ke17z-pinctrl.dtsi"
 #include <zephyr/dt-bindings/input/input-event-codes.h>
+#include <zephyr/dt-bindings/pwm/pwm.h>
 
 / {
 	model = "NXP Freedom KE17Z board";
@@ -20,6 +21,9 @@
 		led2 = &blue_led;
 		sw0 = &user_button_0;
 		sw1 = &user_button_1;
+		pwm-led0 = &red_pwm_led;
+		pwm-led1 = &green_pwm_led;
+		pwm-led2 = &blue_pwm_led;
 	};
 
 	chosen {
@@ -45,6 +49,22 @@
 		};
 	};
 
+	pwmleds {
+		compatible = "pwm-leds";
+		red_pwm_led: led_pwm_0 {
+			pwms = <&ftm2 0 PWM_HZ(20) PWM_POLARITY_INVERTED>;
+			label = "RED RGB PWM LED";
+		};
+		green_pwm_led: led_pwm_1 {
+			pwms = <&ftm2 1 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
+			label = "GREEN RGB PWM LED";
+		};
+		blue_pwm_led: led_pwm_2 {
+			pwms = <&ftm2 2 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
+			label = "BLUE RGB PWM LED";
+		};
+	};
+
 	gpio_keys {
 		compatible = "gpio-keys";
 		user_button_0: button_0 {
@@ -90,6 +110,17 @@
 	status = "okay";
 };
 
+&ftm2 {
+	status = "okay";
+	compatible = "nxp,kinetis-ftm-pwm";
+	#pwm-cells = <3>;
+	clocks = <&scg KINETIS_SCG_SIRC_CLK>;
+	prescaler = <128>;
+	pinctrl-0 = <&ftm2_default>;
+	pinctrl-names = "default";
+	clock-source = "system";
+};
+
 &flash0 {
 	partitions {
 		compatible = "fixed-partitions";

boards/nxp/frdm_ke17z/frdm_ke17z.yaml

@@ -12,6 +12,7 @@ supported:
   - gpio
   - adc
   - uart
+  - pwm
   - i2c
   - spi
   - dma

boards/nxp/frdm_ke17z512/doc/index.rst

@@ -61,6 +61,8 @@ features:
 | UART      | on-chip    | uart polling;                       |
 |           |            | uart interrupt                      |
 +-----------+------------+-------------------------------------+
+| FTM       | on-chip    | pwm                                 |
++-----------+------------+-------------------------------------+
 | I2C       | on-chip    | I2C                                 |
 +-----------+------------+-------------------------------------+
 | ACMP      | on-chip    | sensor                              |

boards/nxp/frdm_ke17z512/frdm_ke17z512-pinctrl.dtsi

@@ -26,6 +26,16 @@
 		};
 	};
 
+	ftm2_default: ftm2_default {
+		group0 {
+			pinmux = <FTM2_CH0_PTD10>,
+				<FTM2_CH2_PTD12>,
+				<FTM2_CH3_PTD5>;
+			drive-strength = "low";
+			slew-rate = "slow";
+		};
+	};
+
 	lpi2c0_default: lpi2c0_default {
 		group0 {
 			pinmux = <LPI2C0_SDA_PTA2>,

boards/nxp/frdm_ke17z512/frdm_ke17z512.dts

@@ -9,6 +9,7 @@
 #include <nxp/nxp_ke17z512.dtsi>
 #include "frdm_ke17z512-pinctrl.dtsi"
 #include <zephyr/dt-bindings/input/input-event-codes.h>
+#include <zephyr/dt-bindings/pwm/pwm.h>
 
 / {
 	model = "NXP Freedom KE17Z512 board";
@@ -27,6 +28,9 @@
 		led2 = &blue_led;
 		sw0 = &user_button_2;
 		sw1 = &user_button_3;
+		pwm-led0 = &red_pwm_led;
+		pwm-led1 = &green_pwm_led;
+		pwm-led2 = &blue_pwm_led;
 	};
 
 	leds {
@@ -45,6 +49,22 @@
 		};
 	};
 
+	pwmleds {
+		compatible = "pwm-leds";
+		red_pwm_led: led_pwm_0 {
+			pwms = <&ftm2 0 PWM_HZ(20) PWM_POLARITY_INVERTED>;
+			label = "RED RGB PWM LED";
+		};
+		green_pwm_led: led_pwm_1 {
+			pwms = <&ftm2 3 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
+			label = "GREEN RGB PWM LED";
+		};
+		blue_pwm_led: led_pwm_2 {
+			pwms = <&ftm2 2 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
+			label = "BLUE RGB PWM LED";
+		};
+	};
+
 	gpio_keys {
 		compatible = "gpio-keys";
 		user_button_2: button_0 {
@@ -96,6 +116,17 @@
 	pinctrl-names = "default";
 };
 
+&ftm2 {
+	status = "okay";
+	compatible = "nxp,kinetis-ftm-pwm";
+	#pwm-cells = <3>;
+	clocks = <&scg KINETIS_SCG_SIRC_CLK>;
+	prescaler = <128>;
+	pinctrl-0 = <&ftm2_default>;
+	pinctrl-names = "default";
+	clock-source = "system";
+};
+
 &flash0 {
 
 	partitions {

boards/nxp/frdm_ke17z512/frdm_ke17z512.yaml

@@ -18,6 +18,7 @@ supported:
   - gpio
   - adc
   - uart
+  - pwm
   - i2c
   - spi
   - dma