ARM: dts: imx6qdl-wandboard: enable USB OTG

Enable USB OTG (dual-role) on the Wandboard.
Note, that the USB_OTG_VBUS current is quite limited due to a 22R resistor
in the power line. Hence, the overcurrent signal of 1A will never be
triggered on this board.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
index 52baf6d1a956cb8f8f8b3fe89d5f41c2fcb601c2..381bf61fcd284ad3c7052e799f9051901af0c6d8 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
@@ -44,6 +44,16 @@
                regulator-max-microvolt = <3300000>;
                regulator-always-on;
        };
+
+       reg_usb_otg_vbus: regulator-usbotgvbus {
+               compatible = "regulator-fixed";
+               regulator-name = "usb_otg_vbus";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_usbotgvbus>;
+               gpio = <&gpio3 22 GPIO_ACTIVE_LOW>;
+       };
 };
 
 &audmux {
@@ -166,6 +176,12 @@
                        >;
                };
 
+               pinctrl_usbotgvbus: usbotgvbusgrp {
+                       fsl,pins = <
+                               MX6QDL_PAD_EIM_D22__GPIO3_IO22          0x130b0
+                       >;
+               };
+
                pinctrl_usdhc1: usdhc1grp {
                        fsl,pins = <
                                MX6QDL_PAD_SD1_CMD__SD1_CMD             0x17059
@@ -240,10 +256,11 @@
 };
 
 &usbotg {
+       vbus-supply = <&reg_usb_otg_vbus>;
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_usbotg>;
        disable-over-current;
-       dr_mode = "peripheral";
+       dr_mode = "otg";
        status = "okay";
 };