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@ti.com>
Link: https://lore.kernel.org/r/20240924220700.886313-6-jm@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 26d4ad5e96f1c4b77589b48d7d14fe6a91c960b5..33e421ec18abbc5d3f6090494d4f823bbd63f35c 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -369,6 +369,16 @@
                        AM64X_IOPAD(0x0270, PIN_INPUT, 0) /* (D18) ECAP0_IN_APWM_OUT */
                >;
        };
+
+       main_eqep0_pins_default: main-eqep0-default-pins {
+               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 */
@@ -706,3 +716,10 @@
        pinctrl-names = "default";
        pinctrl-0 = <&main_ecap0_pins_default>;
 };
+
+&eqep0 {
+       status = "okay";
+       /* EQEP0 A & B available on pins 18 & 22 of J4 header */
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_eqep0_pins_default>;
+};