2017年3月15日 15:16于 Chen-Yu Tsai <w...@csie.org>写道:
>
> Hi, 
>
> On Tue, Mar 7, 2017 at 6:34 AM, Icenowy Zheng <icen...@aosc.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 <icen...@aosc.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. 

Oh I should say "USB Type-A port VBUS".

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