From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@free-electrons.com (Maxime Ripard) Date: Thu, 1 Dec 2016 10:36:19 +0100 Subject: [PATCH v2 2/3] ARM: dts: sunxi: add support for Orange Pi Zero board In-Reply-To: References: <20161121162421.800-1-icenowy@aosc.xyz> <20161121162421.800-2-icenowy@aosc.xyz> <5373671480239408@web31m.yandex.ru> Message-ID: <20161201093619.gs6lmoxtlptp2jr6@lukather> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Nov 28, 2016 at 12:29:07AM +0000, Andr? 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. Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 801 bytes Desc: not available URL: