From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Icenowy Zheng <icenowy@aosc.xyz>
Cc: Chen-Yu Tsai <wens@csie.org>,
Russell King <linux@armlinux.org.uk>,
Hans de Goede <hdegoede@redhat.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board
Date: Thu, 25 Aug 2016 22:47:26 +0200 [thread overview]
Message-ID: <20160825204726.GH32598@lukather> (raw)
In-Reply-To: <116041472134355@web12g.yandex.ru>
[-- Attachment #1: Type: text/plain, Size: 880 bytes --]
On Thu, Aug 25, 2016 at 10:12:35PM +0800, Icenowy Zheng wrote:
> >> But many codes will require a ttyS0 as console... So I think the
> >> bluetooth should be located at ttyS1...
> >
> > Most of them would use /dev/console anyway. What do you have in mind?
>
> As a general configuration, /dev/ttyS0 will be indicated as the default console=
> value... (Otherwise more boards will fail)
There's no reason to make that assumption. The console might be on
another UART entirely (ttyS3, for the sake of the argument), on a
different UART "class" (ttyUSB?, framebuffer console?), or not present
at all.
If you want to use the console, use /dev/console.
I don't what's so special about the UART here. Every single device in
Linux behaves that way.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
prev parent reply other threads:[~2016-08-25 20:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160823064451.25997-1-icenowy@aosc.xyz>
[not found] ` <20160823064451.25997-2-icenowy@aosc.xyz>
2016-08-24 19:32 ` [PATCH 1/2] ARM: dts: sun8i: Add dts file for inet-d978_rev2 tablets Maxime Ripard
[not found] ` <43601472083053@web23m.yandex.ru>
2016-08-25 7:35 ` Maxime Ripard
[not found] ` <20160823064451.25997-3-icenowy@aosc.xyz>
2016-08-24 19:36 ` [PATCH 2/2] ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board Maxime Ripard
[not found] ` <43951472083107@web23m.yandex.ru>
2016-08-25 4:40 ` Chen-Yu Tsai
[not found] ` <97321472108244@web8m.yandex.ru>
2016-08-25 8:03 ` Maxime Ripard
[not found] ` <116041472134355@web12g.yandex.ru>
2016-08-25 14:17 ` Hans de Goede
[not found] ` <438381472136802@web24g.yandex.ru>
2016-08-25 15:13 ` Hans de Goede
2016-08-25 20:47 ` Maxime Ripard [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160825204726.GH32598@lukather \
--to=maxime.ripard@free-electrons.com \
--cc=devicetree@vger.kernel.org \
--cc=hdegoede@redhat.com \
--cc=icenowy@aosc.xyz \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=mark.rutland@arm.com \
--cc=robh+dt@kernel.org \
--cc=wens@csie.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox