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From:   Aswath Govindraju <a-govindraju@ti.com>
CC:     Vignesh Raghavendra <vigneshr@ti.com>,
        Lokesh Vutla <lokeshvutla@ti.com>,
        Kishon Vijay Abraham I <kishon@ti.com>,
        Aswath Govindraju <a-govindraju@ti.com>,
        Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v3 2/2] arm64: dts: ti: k3-am642-evm: Add USB support
Date:   Wed, 17 Mar 2021 10:00:06 +0530
Message-ID: <20210317043007.18272-3-a-govindraju@ti.com>
In-Reply-To: <20210317043007.18272-1-a-govindraju@ti.com>
References: <20210317043007.18272-1-a-govindraju@ti.com>
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AM64 EVM board has a micro USB 2.0 AB connector and the USB0_VBUS is
connected with a resistor divider in between. USB0_DRVVBUS pin is muxed
between USB0_DRVVBUS and GPIO1_79 signals.

Add the corresponding properties and set the pinmux mode for USB subsystem
in the evm dts file.

Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 25fa6fbc0619..1365e3164294 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -210,6 +210,12 @@
 			AM64X_IOPAD(0x0144, PIN_OUTPUT, 4) /* (Y11) PRG1_PRU1_GPO15.RGMII2_TX_CTL */
 		>;
 	};
+
+	main_usb0_pins_default: main-usb0-pins-default {
+		pinctrl-single,pins = <
+			AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
+		>;
+	};
 };
 
 &main_uart0 {
@@ -335,6 +341,18 @@
 	disable-wp;
 };
 
+&usbss0 {
+	ti,vbus-divider;
+	ti,usb2-only;
+};
+
+&usb0 {
+	dr_mode = "otg";
+	maximum-speed = "high-speed";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_usb0_pins_default>;
+};
+
 &cpsw3g {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mdio1_pins_default
-- 
2.17.1