linux-kernel - [PATCH 4/4] arm64: dts: ti: k3-am642-evm: Add ecap0 node

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Date:   Mon, 19 Jul 2021 14:24:02 +0530
From:   Lokesh Vutla <lokeshvutla@...com>
To:     Nishanth Menon <nm@...com>, <kristo@...nel.org>
CC:     Device Tree Mailing List <devicetree@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Linux ARM Mailing List <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Lokesh Vutla <lokeshvutla@...com>
Subject: [PATCH 4/4] arm64: dts: ti: k3-am642-evm: Add ecap0 node

ecap0 can be configured to use pad ECAP0_IN_APWM_OUT (D18) which has a
signal connected to Pin 1 of J12 on EVM. Add support for adding this
pinmux so that pwm can be observed on pin 1 of Header J12

Signed-off-by: Lokesh Vutla <lokeshvutla@...com>
Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 030712221188..7da1238cb1d6 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -288,6 +288,12 @@ AM64X_IOPAD(0x0028, PIN_INPUT, 0) /* (M17) OSPI0_D7 */
 			AM64X_IOPAD(0x0008, PIN_INPUT, 0) /* (N19) OSPI0_DQS */
 		>;
 	};
+
+	main_ecap0_pins_default: main-ecap0-pins-default {
+		pinctrl-single,pins = <
+			AM64X_IOPAD(0x0270, PIN_INPUT, 0) /* (D18) ECAP0_IN_APWM_OUT */
+		>;
+	};
 };
 
 &main_uart0 {
@@ -574,3 +580,9 @@ &pcie0_ep {
 	num-lanes = <1>;
 	status = "disabled";
 };
+
+&ecap0 {
+	/* PWM is available on Pin 1 of header J12 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_ecap0_pins_default>;
+};
-- 
2.30.0