[PATCH] arm64: dts: ti: Add PWM and ECAP overlay for J722S-EVM

[Bhavya Kapoor <b-kapoor@ti.com>]

The J722S-EVM has 3 PWM outputs and 1 ECAP output routed
to the J28 connector. This overlay will set the appropriate
pinmux and enable PWM and ECAP on the pins.

Currently enabled PWM output on J28: 29, 31, 33 pins
and ECAP output on J28: 32 pin

Signed-off-by: Bhavya Kapoor <b-kapoor@ti.com>
---
 arch/arm64/boot/dts/ti/Makefile              |  1 +
 arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso | 53 ++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index e20b27ddf901..61d51284dcba 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -111,6 +111,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-pcie1-ep.dtbo
 
 # Boards with J722s SoC
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-pwm.dtbo
 
 # Boards with J784s4 SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb
diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso b/arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso
new file mode 100644
index 000000000000..f6d1f072b140
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * DT Overlay for enabling PWM output on User Expansion header on J722S-EVM
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include "k3-pinctrl.h"
+
+&main_pmx0 {
+
+	main_epwm0_pins_default: main-epwm0-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x01b4, PIN_OUTPUT, 2) /* (B20) EHRPWM0_A */
+		>;
+	};
+
+	main_epwm1_pins_default: main-epwm1-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x01bc, PIN_OUTPUT, 2) /* (D20) EHRPWM1_A */
+			J722S_IOPAD(0x01c0, PIN_OUTPUT, 2) /* (E19) EHRPWM1_B */
+		>;
+	};
+
+	main_ecap0_pins_default: main-ecap0-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x01b8, PIN_OUTPUT, 3) /* (C20) ECAP0_IN_APWM_OUT */
+		>;
+	};
+};
+
+&epwm0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_epwm0_pins_default>;
+	status = "okay";
+};
+
+&epwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_epwm1_pins_default>;
+	status = "okay";
+};
+
+&ecap0 {
+	/* ECAP in APWM mode */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_ecap0_pins_default>;
+	status = "okay";
+};
-- 
2.34.1