Dne torek, 18. junij 2019 ob 19:13:16 CEST je Clément Péron napisal(a):
> Hi,
>
> On Thu, 16 May 2019 at 03:27, Andre Przywara <[email protected]> wrote:
> > The first USB controller on the H6 SoC shares a PHY with the OTG
> > controller. Reportedly to avoid problems with the VBUS regulator under
> > Linux, we don't link OHCI0/EHCI0 to the USB PHY in the H6 .dtsi file.
> >
> > However on boards which can't use peripheral mode (because they have an
> > always-on VBUS supply on an USB-A socket) we don't need this trick, and
> > can properly connect host controller 0 to the PHY 0.
> >
> > Amend the Pine H64 .dts to reflect this. This enables the upper USB port
> > in U-Boot on this board.
> >
> > Signed-off-by: Andre Przywara <[email protected]>
> > ---
> >
> > arch/arm/dts/sun50i-h6-pine-h64.dts | 5 ++++-
> > 1 file changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/arm/dts/sun50i-h6-pine-h64.dts
> > b/arch/arm/dts/sun50i-h6-pine-h64.dts index 4802902e12..aad7646b18 100644
> > --- a/arch/arm/dts/sun50i-h6-pine-h64.dts
> > +++ b/arch/arm/dts/sun50i-h6-pine-h64.dts
> > @@ -96,6 +96,8 @@
> >
> > };
> >
> > &ehci0 {
> >
> > + phys = <&usb2phy 0>;
> > + phy-names = "usb";
> >
> > status = "okay";
> >
> > };
> >
> > @@ -120,6 +122,8 @@
> >
> > };
> >
> > &ohci0 {
> >
> > + phys = <&usb2phy 0>;
> > + phy-names = "usb";
> >
> > status = "okay";
> >
> > };
> >
> > @@ -255,7 +259,6 @@
> >
> > &usb2otg {
> >
> > dr_mode = "host";
> >
> > - status = "okay";
> >
> > };
>
> Maybe you should add explicit comments in the device-tree to avoid
> losing this at next sync with linux dt.
If DT change is U-Boot specific, it should be moved to *-u-boot.dtsi file,
although I'm not sure if you can delete properties in such way.
Best regards,
Jernej
>
> Regards,
> Clement
>
> > &usb2phy {
> >
> > --
> > 2.14.5
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