linux-kernel - Re: [linux-sunxi] [PATCH v3 5/5] ARM: dts: sun8i: h2+: enable USB OTG for Orange Pi Zero board

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Date:   Wed, 15 Mar 2017 15:16:01 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Icenowy Zheng <icenowy@...c.xyz>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Hans de Goede <hdegoede@...hat.com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] [PATCH v3 5/5] ARM: dts: sun8i: h2+: enable USB OTG
 for Orange Pi Zero board

Hi,

On Tue, Mar 7, 2017 at 6:34 AM, Icenowy Zheng <icenowy@...c.xyz> wrote:
> Orange Pi Zero board features a USB OTG port, which has a ID pin, and
> can be used to power up the board. However, even if the board is powered
> via +5V pin in GPIO/expansion headers, the VBUS in the OTG port cannot
> be powered up, thus it's impossible to use it in host mode with simple
> OTG cables.
>
> Add support for it in peripheral mode.
>
> If someone really want to use it in host mode, the mode of PHY can be
> switch via sysfs, then use a powered USB OTG cable or powered USB HUB to
> power up external USB devices.
>
> Signed-off-by: Icenowy Zheng <icenowy@...c.xyz>
> ---
> New patch in v3.
>
>  arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
> index b7ca916d871d..63f819394b98 100644
> --- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
> +++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
> @@ -96,6 +96,10 @@
>         };
>  };
>
> +&ehci0 {
> +       status = "okay";
> +};
> +
>  &ehci1 {
>         status = "okay";
>  };
> @@ -132,6 +136,10 @@
>         bias-pull-up;
>  };
>
> +&ohci0 {
> +       status = "okay";
> +};
> +
>  &ohci1 {
>         status = "okay";
>  };
> @@ -154,7 +162,13 @@
>         status = "disabled";
>  };
>
> +&usb_otg {
> +       dr_mode = "peripheral";
> +       status = "okay";
> +};
> +
>  &usbphy {
>         /* USB VBUS is always on */

This comment does not match your commit message, which says it's always off.

ChenYu

>         status = "okay";
> +       usb0_id_det-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
>  };
> --
> 2.11.1
>
> --
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