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    SubjectRe: [PATCH v2 2/3] ARM: dts: sunxi: add support for Orange Pi Zero board
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    Hi,

    On 02-12-16 15:22, Icenowy Zheng wrote:
    >
    >
    > 01.12.2016, 17:36, "Maxime Ripard" <maxime.ripard@free-electrons.com>:
    >> On Mon, Nov 28, 2016 at 12:29:07AM +0000, André Przywara wrote:
    >>> > Something more interesting happened.
    >>> >
    >>> > Xunlong made a add-on board for Orange Pi Zero, which exposes the
    >>> > two USB Controllers exported at expansion bus as USB Type-A
    >>> > connectors.
    >>> >
    >>> > Also it exposes a analog A/V jack and a microphone.
    >>> >
    >>> > Should I enable {e,o}hci{2.3} in the device tree?
    >>>
    >>> Actually we should do this regardless of this extension board. The USB
    >>> pins are not multiplexed and are exposed on user accessible pins (just
    >>> not soldered, but that's a detail), so I think they qualify for DT
    >>> enablement. And even if a user can't use them, it doesn't hurt to have
    >>> them (since they are not multiplexed).
    >>
    >> My main concern about this is that we'll leave regulators enabled by
    >> default, for a minority of users. And that minority will prevent to do
    >> a proper power management when the times come since we'll have to keep
    >> that behaviour forever.
    >
    > I think these users can add a 'fdt set /xxx/xxx status "disabled" ' .

    I don't think that will be necessary I'm pretty sure these extra usb
    ports do not have a regulator for the Vbus, they just hook directly
    to the 5V rail, can someone with a schematic check ?

    Regards,

    Hans

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