HACK: Test that converts one of the PCA9685 PWM outputs to a GPIO

Author: 6by9

arch/arm/boot/dts/overlays/i2c-pwm-pca9685a-overlay.dts

@@ -20,6 +20,23 @@
 			};
 		};
 	};
+
+	fragment@1 {
+		target-path = "/";
+		__overlay__ {
+			pwm_gpio: pwm_gpio@0 {
+				compatible = "pwm-gpio";
+				reg = <0x0>;
+				gpio-controller;
+				#gpio-cells = <2>;
+
+				pwms = <&pca 15 1000000>; //100ns or 1kHz
+
+				status = "okay";
+			};
+		};
+	};
+
 	__overrides__ {
 		addr = <&pca>,"reg:0";
 	};