boards: others: neorv32: enable PWM controller

Enable the NEORV32 PWM controller in both the MinimalBoot and UP5Kdemo
board variants.

Signed-off-by: Henrik Brix Andersen <[email protected]>

Author: henrikbrixandersen

boards/others/neorv32/doc/index.rst

@@ -97,6 +97,13 @@ supporting the GPIOs, support can be enabled by setting the ``status`` property
 devicetree node to ``okay``. The number of supported GPIOs can be set via the ``ngpios`` devicetree
 property.
 
+Pulse-Width Modulation
+======================
+
+The NEORV32 PWM controller is supported but disabled by default. For NEORV32 SoC implementations
+supporting PWM, support can be enabled by setting the ``status`` property of the ``pwm`` devicetree
+node to ``okay``.
+
 True Random-Number Generator
 ============================
 

boards/others/neorv32/neorv32_neorv32_minimalboot.dts

@@ -18,6 +18,9 @@
 		led1 = &led1;
 		led2 = &led2;
 		led3 = &led3;
+		pwm-led0 = &pwm_led0;
+		pwm-led1 = &pwm_led1;
+		pwm-led2 = &pwm_led2;
 	};
 
 	chosen {
@@ -51,6 +54,25 @@
 			label = "LED_3";
 		};
 	};
+
+	pwmleds {
+		compatible = "pwm-leds";
+
+		pwm_led0: pwm_led0 {
+			pwms = <&pwm 0 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+			label = "PWM_LED_0";
+		};
+
+		pwm_led1: pwm_led1 {
+			pwms = <&pwm 1 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+			label = "PWM_LED_1";
+		};
+
+		pwm_led2: pwm_led2 {
+			pwms = <&pwm 2 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+			label = "PWM_LED_2";
+		};
+	};
 };
 
 &cpu0 {
@@ -88,3 +110,7 @@
 	status = "okay";
 	ngpios = <4>;
 };
+
+&pwm {
+	status = "okay";
+};

boards/others/neorv32/neorv32_neorv32_minimalboot.yaml

@@ -9,3 +9,4 @@ ram: 64
 flash: 64
 supported:
   - gpio
+  - pwm

boards/others/neorv32/neorv32_neorv32_up5kdemo.dts

@@ -18,6 +18,9 @@
 		led1 = &led1;
 		led2 = &led2;
 		led3 = &led3;
+		pwm-led0 = &pwm_led0;
+		pwm-led1 = &pwm_led1;
+		pwm-led2 = &pwm_led2;
 	};
 
 	chosen {
@@ -51,6 +54,25 @@
 			label = "LED_3";
 		};
 	};
+
+	pwmleds {
+		compatible = "pwm-leds";
+
+		pwm_led0: pwm_led0 {
+			pwms = <&pwm 0 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+			label = "PWM_LED_0";
+		};
+
+		pwm_led1: pwm_led1 {
+			pwms = <&pwm 1 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+			label = "PWM_LED_1";
+		};
+
+		pwm_led2: pwm_led2 {
+			pwms = <&pwm 2 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+			label = "PWM_LED_2";
+		};
+	};
 };
 
 &cpu0 {
@@ -88,3 +110,7 @@
 	status = "okay";
 	ngpios = <32>;
 };
+
+&pwm {
+	status = "okay";
+};

boards/others/neorv32/neorv32_neorv32_up5kdemo.yaml

@@ -9,3 +9,4 @@ ram: 64
 flash: 64
 supported:
   - gpio
+  - pwm