Re: [PATCH] arm: sun8i: nanopi-neo: Enable USB OTG

[icenowy-h8G6r0blFSE@public.gmane.org]

在 2017-08-28 08:12，David Disseldorp 写道：
> From: David Disseldorp <ddiss-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>
> 
> The NanoPi NEO features a MicroUSB port that can work in both host mode
> and peripheral mode. Switching is handled via GPIO PG12.

How's the Vbus of the OTG handled?

> 
> Signed-off-by: David Disseldorp <ddiss-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>
> ---
>  arch/arm/boot/dts/sun8i-h3-nanopi-neo.dts | 27 
> +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-h3-nanopi-neo.dts
> b/arch/arm/boot/dts/sun8i-h3-nanopi-neo.dts
> index 78f6c24952dd..5abf430ac5a6 100644
> --- a/arch/arm/boot/dts/sun8i-h3-nanopi-neo.dts
> +++ b/arch/arm/boot/dts/sun8i-h3-nanopi-neo.dts
> @@ -47,9 +47,36 @@
>  	compatible = "friendlyarm,nanopi-neo", "allwinner,sun8i-h3";
>  };
> 
> +&ehci0 {
> +	status = "okay";
> +};
> +
> +&ehci3 {
> +	status = "okay";
> +};

Why do you also enable ehci/ohci3 here?
I think they're already enabled in sun8i-h3-nanopi.dtsi .

> +
>  &emac {
>  	phy-handle = <&int_mii_phy>;
>  	phy-mode = "mii";
>  	allwinner,leds-active-low;
>  	status = "okay";
>  };
> +
> +&ohci0 {
> +	status = "okay";
> +};
> +
> +&ohci3 {
> +	status = "okay";
> +};
> +
> +&usb_otg {
> +	dr_mode = "otg";
> +	status = "okay";
> +};
> +
> +&usbphy {
> +	/* USB Type-A port's VBUS is always on */
> +	usb0_id_det-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
> +	status = "okay";
> +};
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