linux-kernel - [PATCH 2/3] arm64: dts: ti: k3-am62a7-sk: Enable PWM

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Message-ID: <20250422000851.4118545-3-jm@ti.com>
Date: Mon, 21 Apr 2025 19:08:50 -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 2/3] arm64: dts: ti: k3-am62a7-sk: Enable PWM

PWM signals can be routed to the user expansion header on am62a7
SK. Enable eCAP0, eCAP1, eHRPWM1, and route the output PWM signals
to pins on J3 header.

Signed-off-by: Judith Mendez <jm@...com>
---
 arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 40 +++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index 1c9d95696c839..a9557ee73b831 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -383,6 +383,25 @@ vddshv_sdio_pins_default: vddshv-sdio-default-pins {
 			AM62AX_IOPAD(0x07c, PIN_OUTPUT, 7) /* (M19) GPMC0_CLK.GPIO0_31 */
 		>;
 	};
+
+	main_ecap0_pins_default: main-ecap0-default-pins {
+		pinctrl-single,pins = <
+			AM62AX_IOPAD(0x01b8, PIN_OUTPUT, 3) /* (C16) SPI0_CS1.ECAP0_IN_APWM_OUT */
+		>;
+	};
+
+	main_ecap2_pins_default: main-ecap2-default-pins {
+		pinctrl-single,pins = <
+			AM62AX_IOPAD(0x01a4, PIN_OUTPUT, 2) /* (A19) MCASP0_ACLKX.ECAP2_IN_APWM_OUT */
+		>;
+	};
+
+	main_epwm1_pins_default: main-epwm1-default-pins {
+		pinctrl-single,pins = <
+			AM62AX_IOPAD(0x019c, PIN_OUTPUT, 6) /* (B18) MCASP0_AXR1.EHRPWM1_A */
+			AM62AX_IOPAD(0x01a0, PIN_OUTPUT, 6) /* (B20) MCASP0_AXR0.EHRPWM1_B */
+		>;
+	};
 };
 
 &mcu_pmx0 {
@@ -741,3 +760,24 @@ dpi1_out: endpoint {
 		};
 	};
 };
+
+&ecap0 {
+	/* P26 of J3 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_ecap0_pins_default>;
+	status = "okay";
+};
+
+&ecap2 {
+	/* P11 of J3 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_ecap2_pins_default>;
+	status = "okay";
+};
+
+&epwm1 {
+	/* P36/P33 of J3 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_epwm1_pins_default>;
+	status = "okay";
+};
-- 
2.49.0