[PATCH] ARM: dts: Configure USB host for 37xx-evm

[Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>]

Looks like nobody bothered to configure USB host for 37xx-evm
when we converted things to device tree, so let's add it. This
is similar to beagleboard configuration with few extra quirks
to configure the port. And as with beagleboard, OHCI won't work
because there is no USB LS/FS PHY. A HS USB hub is needed to use
devices like keyboard and mice.

Cc: Roger Quadros <rogerq-l0cyMroinI0@public.gmane.org>
Signed-off-by: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
---
 arch/arm/boot/dts/omap3-evm-37xx.dts    | 82 +++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/omap3-evm-common.dtsi | 33 +++++++++++++
 2 files changed, 115 insertions(+)

diff --git a/arch/arm/boot/dts/omap3-evm-37xx.dts b/arch/arm/boot/dts/omap3-evm-37xx.dts
--- a/arch/arm/boot/dts/omap3-evm-37xx.dts
+++ b/arch/arm/boot/dts/omap3-evm-37xx.dts
@@ -98,6 +98,32 @@
 		>;
 	};
 
+	hsusb2_pins: pinmux_hsusb2_pins {
+		pinctrl-single,pins = <
+
+		/* On-board EHCI USB2 gpmc_nbe1.gpio_61 */
+		OMAP3_CORE1_IOPAD(0x20c8, PIN_OUTPUT | MUX_MODE4)
+
+		/* mcspi1_cs3.hsusb2_data2 */
+		OMAP3_CORE1_IOPAD(0x21d4, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* mcspi2_clk.hsusb2_data7 */
+		OMAP3_CORE1_IOPAD(0x21d6, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* mcspi2_simo.hsusb2_data4 */
+		OMAP3_CORE1_IOPAD(0x21d8, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* mcspi2_somi.hsusb2_data5 */
+		OMAP3_CORE1_IOPAD(0x21da, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* mcspi2_cs0.hsusb2_data6 */
+		OMAP3_CORE1_IOPAD(0x21dc, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* mcspi2_cs1.hsusb2_data3 */
+		OMAP3_CORE1_IOPAD(0x21de, PIN_INPUT_PULLDOWN | MUX_MODE3)
+		>;
+	};
+
 	wl12xx_gpio: pinmux_wl12xx_gpio {
 		pinctrl-single,pins = <
 			OMAP3_CORE1_IOPAD(0x2180, PIN_OUTPUT | MUX_MODE4)		/* uart1_cts.gpio_150 */
@@ -112,6 +138,37 @@
 	};
 };
 
+&omap3_pmx_core2 {
+	hsusb2_2_pins: pinmux_hsusb2_2_pins {
+		pinctrl-single,pins = <
+
+		/* EHCI PHY reset GPIO etk_d7.gpio_21 */
+		OMAP3630_CORE2_IOPAD(0x25ea, PIN_OUTPUT | MUX_MODE4)
+
+		/* EHCI VBUS etk_d8.gpio_22 */
+		OMAP3630_CORE2_IOPAD(0x25ec, PIN_OUTPUT | MUX_MODE4)
+
+		/* etk_d10.hsusb2_clk */
+		OMAP3630_CORE2_IOPAD(0x25f0, PIN_OUTPUT | MUX_MODE3)
+
+		/* etk_d11.hsusb2_stp */
+		OMAP3630_CORE2_IOPAD(0x25f2, PIN_OUTPUT | MUX_MODE3)
+
+		/* etk_d12.hsusb2_dir */
+		OMAP3630_CORE2_IOPAD(0x25f4, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* etk_d13.hsusb2_nxt */
+		OMAP3630_CORE2_IOPAD(0x25f6, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* etk_d14.hsusb2_data0 */
+		OMAP3630_CORE2_IOPAD(0x25f8, PIN_INPUT_PULLDOWN | MUX_MODE3)
+
+		/* etk_d15.hsusb2_data1 */
+		OMAP3630_CORE2_IOPAD(0x25fa, PIN_INPUT_PULLDOWN | MUX_MODE3)
+		>;
+	};
+};
+
 &omap3_pmx_wkup {
 	dss_dpi_pins2: pinmux_dss_dpi_pins1 {
 		pinctrl-single,pins = <
@@ -153,6 +210,31 @@
 	pinctrl-0 = <&uart3_pins>;
 };
 
+&hsusb2_power {
+	pinctrl-names = "default";
+	pinctrl-0 = <&hsusb2_pins &hsusb2_2_pins>;
+};
+
+/* GPIO_61 (nUSB2_EN_1V8) low for on-board EHCI USB2 interface */
+&gpio2 {
+	en_hsusb2_clk {
+		gpio-hog;
+		gpios = <29 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "hsusb2 port";
+	};
+};
+
+/* T2_GPIO_2 low to route GPIO_61 to on-board devices */
+&twl_gpio {
+	en_hsusb2_clk {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "en_hsusb2_clk";
+	};
+};
+
 &gpmc {
 	ranges = <0 0 0x30000000 0x1000000>,	/* CS0: 16MB for NAND */
 		 <5 0 0x2c000000 0x01000000>;
diff --git a/arch/arm/boot/dts/omap3-evm-common.dtsi b/arch/arm/boot/dts/omap3-evm-common.dtsi
--- a/arch/arm/boot/dts/omap3-evm-common.dtsi
+++ b/arch/arm/boot/dts/omap3-evm-common.dtsi
@@ -12,6 +12,24 @@
 		};
 	};
 
+	/* HS USB Port 2 Power */
+	hsusb2_power: hsusb2_power_reg {
+		compatible = "regulator-fixed";
+		regulator-name = "hsusb2_vbus";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio1 22 GPIO_ACTIVE_HIGH>; /* gpio_22 */
+		startup-delay-us = <70000>;
+		enable-active-high;
+	};
+
+	/* HS USB Host PHY on PORT 2 */
+	hsusb2_phy: hsusb2_phy {
+		compatible = "usb-nop-xceiv";
+		reset-gpios = <&gpio1 21 GPIO_ACTIVE_LOW>; /* gpio_21 */
+		vcc-supply = <&hsusb2_power>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		ledb {
@@ -143,6 +161,14 @@
 			>;
 };
 
+&usbhshost {
+	port2-mode = "ehci-phy";
+};
+
+&usbhsehci {
+	phys = <0 &hsusb2_phy>;
+};
+
 &usb_otg_hs {
 	interface-type = <0>;
 	usb-phy = <&usb2_phy>;
@@ -159,3 +185,10 @@
 		reg = <5 0 0xff>;
 	};
 };
+
+&vaux2 {
+	regulator-name = "usb_1v8";
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <1800000>;
+	regulator-always-on;
+};
-- 
2.13.0
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