[Adding Shawn]
On Sun, Jul 23, 2017 at 1:49 PM, Alexander Kurz <akurz@xxxxxxxx> wrote:
> 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@xxxxxxxx>
Reviewed-by: Fabio Estevam <fabio.estevam@xxxxxxx>
> ---
> arch/arm/boot/dts/imx6qdl-wandboard.dtsi | 19 ++++++++++++++++++-
> 1 file changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
> index b4fa7f1..f1abde8 100644
> --- a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
> @@ -34,6 +34,16 @@
> regulator-max-microvolt = <3300000>;
> regulator-always-on;
> };
> +
> + reg_usb_otg_vbus: usb_otg_vbus {
> + 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>;
> + };
> };
>
> sound {
> @@ -170,6 +180,12 @@
> >;
> };
>
> + pinctrl_usbotgvbus: usbotgvbusgrp {
> + fsl,pins = <
> + MX6QDL_PAD_EIM_D22__GPIO3_IO22 0x130b0
> + >;
> + };
> +
> pinctrl_usdhc1: usdhc1grp {
> fsl,pins = <
> MX6QDL_PAD_SD1_CMD__SD1_CMD 0x17059
> @@ -244,10 +260,11 @@
> };
>
> &usbotg {
> + vbus-supply = <®_usb_otg_vbus>;
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_usbotg>;
> disable-over-current;
> - dr_mode = "peripheral";
> + dr_mode = "otg";
> status = "okay";
> };
>
> --
> 2.1.4
>
>
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