linux-kernel - [PATCH v3 7/8] arm64: dts: ti: k3-am64x-sk: Enable eQEP

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Message-ID: <20240607162755.366144-8-jm@ti.com>
Date: Fri, 7 Jun 2024 11:27:54 -0500
From: Judith Mendez <jm@...com>
To: Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        William Breathitt Gray <william.gray@...aro.org>
CC: David Lechner <david@...hnology.com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        Nishanth Menon
	<nm@...com>, Vignesh Raghavendra <vigneshr@...com>
Subject: [PATCH v3 7/8] arm64: dts: ti: k3-am64x-sk: Enable eQEP

There are 3 instances of eQEP on AM64x. Only EQEP0 signals
can be routed to the user expansion so enable only EQEP0
in k3-am642-sk.dts.

Signed-off-by: Judith Mendez <jm@...com>
---
Changes since v2:
- Enable eQEP0 in k3-am64 SK board
---
 arch/arm64/boot/dts/ti/k3-am642-sk.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 5b028b3a3192f..1987da60672a2 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -357,6 +357,16 @@ main_ecap0_pins_default: main-ecap0-default-pins {
 			AM64X_IOPAD(0x0270, PIN_INPUT, 0) /* (D18) ECAP0_IN_APWM_OUT */
 		>;
 	};
+
+	main_eqep0_pins_default: main-eqep0-pins-default {
+		pinctrl-single,pins = <
+			AM64X_IOPAD(0x00a0, PIN_INPUT, 3) /* (N16) GPMC0_WPn.EQEP0_A */
+			AM64X_IOPAD(0x00a4, PIN_INPUT, 3) /* (N17) GPMC0_DIR.EQEP0_B */
+			AM64X_IOPAD(0x00ac, PIN_INPUT, 3) /* (R20) GPMC0_CSn1.EQEP0_I */
+			AM64X_IOPAD(0x00a8, PIN_INPUT, 3) /* (R19) GPMC0_CSn0.EQEP0_S */
+		>;
+	};
+
 	main_wlan_en_pins_default: main-wlan-en-default-pins {
 		pinctrl-single,pins = <
 			AM64X_IOPAD(0x00c4, PIN_OUTPUT_PULLUP, 7) /* (V8) GPIO0_48 */
@@ -672,3 +682,11 @@ &ecap0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_ecap0_pins_default>;
 };
+
+&eqep0 {
+	/* EQEP0_A is available on Pin 18 of header J4 */
+	/* EQEP0_B is available on Pin 22 of header J4 */
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_eqep0_pins_default>;
+};
-- 
2.45.1