linux-kernel - [PATCH 1/3] arm64: dts: ti: k3-am62p5-sk: Enable PWM

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Message-ID: <20250422000851.4118545-2-jm@ti.com>
Date: Mon, 21 Apr 2025 19:08:49 -0500
From: Judith Mendez <jm@...com>
To: Judith Mendez <jm@...com>, Nishanth Menon <nm@...com>,
        Vignesh Raghavendra
	<vigneshr@...com>
CC: Tero Kristo <kristo@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof
 Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/3] arm64: dts: ti: k3-am62p5-sk: Enable PWM

PWM signals can be routed to the user expansion header on am62p5
SK. Enable eCAP0, eCAP1, eHRPWM0, eHRPWM1 and route the output PWM
signals to pins on J4 header.

Signed-off-by: Judith Mendez <jm@...com>
---
 arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 54 +++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
index d29f524600af0..c2f55cc5a8ebc 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
@@ -356,6 +356,32 @@ wlan_en_pins_default: wlan-en-default-pins {
 			AM62PX_IOPAD(0x0124, PIN_INPUT, 7) /* (J25) MMC2_SDCD.GPIO0_71 */
 		>;
 	};
+
+	main_ecap1_pins_default: main-ecap1-default-pins {
+		pinctrl-single,pins = <
+			AM62PX_IOPAD(0x019c, PIN_OUTPUT, 2) /* (E24) MCASP0_AXR1.ECAP1_IN_APWM_OUT */
+		>;
+	};
+
+	main_ecap2_pins_default: main-ecap2-default-pins {
+		pinctrl-single,pins = <
+			AM62PX_IOPAD(0x01a4, PIN_OUTPUT, 2) /* (F24) MCASP0_ACLKX.ECAP2_IN_APWM_OUT */
+		>;
+	};
+
+	main_epwm0_pins_default: main-epwm0-default-pins {
+		pinctrl-single,pins = <
+			AM62PX_IOPAD(0x01b4, PIN_OUTPUT, 2) /* (D20) SPI0_CS0.EHRPWM0_A */
+			AM62PX_IOPAD(0x01b8, PIN_OUTPUT, 2) /* (E20) SPI0_CS1.EHRPWM0_B */
+		>;
+	};
+
+	main_epwm1_pins_default: main-epwm1-default-pins {
+		pinctrl-single,pins = <
+			AM62PX_IOPAD(0x01bc, PIN_OUTPUT, 2) /* (B21) SPI0_CLK.EHRPWM1_A */
+			AM62PX_IOPAD(0x01c0, PIN_OUTPUT, 2) /* (B20) SPI0_D0.EHRPWM1_B */
+		>;
+	};
 };
 
 &main_i2c0 {
@@ -683,3 +709,31 @@ &mcu_gpio0 {
 &mcu_gpio_intr {
 	status = "reserved";
 };
+
+&ecap1 {
+	/* P36 of J4 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_ecap1_pins_default>;
+	status = "okay";
+};
+
+&ecap2 {
+	/* P11 of J4 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_ecap2_pins_default>;
+	status = "okay";
+};
+
+&epwm0 {
+	/* P24/P26 of J4 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_epwm0_pins_default>;
+	status = "okay";
+};
+
+&epwm1 {
+	/* P23/P19 of J4 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_epwm1_pins_default>;
+	status = "okay";
+};
-- 
2.49.0