From 9dbabd6fe91b15b54edf5bb4556963353b70ae65 Mon Sep 17 00:00:00 2001
From: Teresa Zepeda Ventura <teresa.zvent@gmail.com>
Date: Tue, 3 Dec 2024 13:29:46 -0600
Subject: [PATCH] board: adafruit: Enable PWM on the Adafruit feather

This enables PWM on the Adafruit feather m4 express

Signed-off-by: Teresa Zepeda Ventura <teresa.zvent@gmail.com>
---
 .../adafruit_feather_m4_express-pinctrl.dtsi         |  6 +++---
 .../adafruit_feather_m4_express.dts                  | 12 ++++++++++++
 .../adafruit/feather_m4_express/support/openocd.cfg  |  2 +-
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/boards/adafruit/feather_m4_express/adafruit_feather_m4_express-pinctrl.dtsi b/boards/adafruit/feather_m4_express/adafruit_feather_m4_express-pinctrl.dtsi
index 34ddd2b858c..a96cf644f40 100644
--- a/boards/adafruit/feather_m4_express/adafruit_feather_m4_express-pinctrl.dtsi
+++ b/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>;
 		};
 	};
 
diff --git a/boards/adafruit/feather_m4_express/adafruit_feather_m4_express.dts b/boards/adafruit/feather_m4_express/adafruit_feather_m4_express.dts
index 374123bae71..a77a3d2b7ae 100644
--- a/boards/adafruit/feather_m4_express/adafruit_feather_m4_express.dts
+++ b/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>;
diff --git a/boards/adafruit/feather_m4_express/support/openocd.cfg b/boards/adafruit/feather_m4_express/support/openocd.cfg
index e17a3034afe..9990cf9036a 100644
--- a/boards/adafruit/feather_m4_express/support/openocd.cfg
+++ b/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 {