board: adafruit: Enable PWM on the Adafruit feather

This enables PWM on the Adafruit feather m4 express

Signed-off-by: Teresa Zepeda Ventura <[email protected]>

Author: Terezvent

boards/adafruit/feather_m4_express/adafruit_feather_m4_express-pinctrl.dtsi

@@ -35,10 +35,10 @@
 			pinmux = <PA22G_TCC0_WO2>;
 		};
 	};
-	pwm1_default: pwm1_default {
+
+	tc0_default: tc0_default {
 		group1 {
-			pinmux = <PA18F_TCC1_WO2>,
-				 <PA19F_TCC1_WO3>;
+			pinmux = <PA5E_TC0_WO1>;
 		};
 	};
 

boards/adafruit/feather_m4_express/adafruit_feather_m4_express.dts

@@ -25,6 +25,7 @@
 	aliases {
 		led0 = &led0;
 		pwm-0 = &tcc0;
+		pwm-1 = &tc0;
 	};
 
 	leds {
@@ -70,6 +71,17 @@
 	pinctrl-names = "default";
 };
 
+&tc0 {
+	status = "okay";
+	compatible = "atmel,sam0-tc-pwm";
+	prescaler = <1024>;
+	#pwm-cells = <2>;
+	channels = <2>;
+	counter-size = <16>;
+	pinctrl-0 = <&tc0_default>;
+	pinctrl-names = "default";
+};
+
 zephyr_udc0: &usb0 {
 	status = "okay";
 	pinctrl-0 = <&usb_dc_default>;

boards/adafruit/feather_m4_express/support/openocd.cfg

@@ -7,7 +7,7 @@ source [find target/atsame5x.cfg]
 
 # TODO(http://openocd.zylin.com/#/c/5706/): lower the clock speed to workaround
 # an erase timeout.
-adapter_khz 500
+adapter speed 500
 reset_config srst_only
 
 $_TARGETNAME configure -event gdb-attach {