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From:   Lokesh Vutla <lokeshvutla@ti.com>
To:     Nishanth Menon <nm@ti.com>, <kristo@kernel.org>
CC:     Device Tree Mailing List <devicetree@vger.kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Linux ARM Mailing List <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, Vignesh R <vigneshr@ti.com>,
        Lokesh Vutla <lokeshvutla@ti.com>
Subject: [PATCH v2 3/4] arm64: dts: ti: k3-am642-evm: Add pwm nodes
Date:   Wed, 21 Jul 2021 17:06:24 +0530
Message-ID: <20210721113625.17299-4-lokeshvutla@ti.com>
In-Reply-To: <20210721113625.17299-1-lokeshvutla@ti.com>
References: <20210721113625.17299-1-lokeshvutla@ti.com>
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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

Also mark all un-used epwm and ecap pwm nodes as disabled.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 56 +++++++++++++++++++++++++
 1 file changed, 56 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..24ce4942618d 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 +580,53 @@ &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>;
+};
+
+&ecap1 {
+	status = "disabled";
+};
+
+&ecap2 {
+	status = "disabled";
+};
+
+&epwm0 {
+	status = "disabled";
+};
+
+&epwm1 {
+	status = "disabled";
+};
+
+&epwm2 {
+	status = "disabled";
+};
+
+&epwm3 {
+	status = "disabled";
+};
+
+&epwm4 {
+	status = "disabled";
+};
+
+&epwm5 {
+	status = "disabled";
+};
+
+&epwm6 {
+	status = "disabled";
+};
+
+&epwm7 {
+	status = "disabled";
+};
+
+&epwm8 {
+	status = "disabled";
+};
-- 
2.31.1