linux-kernel - Re: [PATCH 0/3] ARM: dts: Define stdout-patch for Exynos Chromebooks

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Message-ID: <55084804.8000108@kernel.org>
Date:	Wed, 18 Mar 2015 00:28:04 +0900
From:	Kukjin Kim <kgene@...nel.org>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Kukjin Kim <kgene@...nel.org>,
	'Javier Martinez Canillas' <javier.martinez@...labora.co.uk>,
	'Olof Johansson' <olof@...om.net>,
	'Doug Anderson' <dianders@...omium.org>,
	'Andreas Faerber' <afaerber@...e.de>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] ARM: dts: Define stdout-patch for Exynos Chromebooks

On 03/17/15 14:27, Arnd Bergmann wrote:
> On Tuesday 17 March 2015 10:51:13 Kukjin Kim wrote:
>> Javier Martinez Canillas wrote:
>>>
>>> The kernel can use as the default console a serial port if is defined
>>> as stdout device in the Device Tree.
>>>
>>> This allows a board to be booted without the need of having a console
>>> parameter in the kernel command line.
>>>
>>> This small series add a stdout-path property for Exynos5 Chromebooks and
>>> is composed of the following patches:
>>>
>>> Javier Martinez Canillas (3):
>>>   ARM: dts: Define stdout-path property for Peach boards
>>>   ARM: dts: Define stdout-path property for Snow board
>>>   ARM: dts: Define stdout-path property for Spring board
>>>
>>>  arch/arm/boot/dts/exynos5250-snow.dts      | 1 +
>>>  arch/arm/boot/dts/exynos5250-spring.dts    | 1 +
>>>  arch/arm/boot/dts/exynos5420-peach-pit.dts | 4 ++++
>>>  arch/arm/boot/dts/exynos5800-peach-pi.dts  | 4 ++++
>>>  4 files changed, 10 insertions(+)
>>>
>> + Arnd
>>
>> Basically, I have no objection to add stdout-path property on board DT but I
>> need to ask other ARM guys how they think about? Always I'm questioned what
>> should be defined in bootloader before entering kernel and IMHO kernel can do
>> it, it should be defined in bootloader though 
>>
>> Let's wait for other opinions...
>>
> 
> We're trying to do this on all machines now so we can replace
> debug_ll with earlycon for any normal use case aside from early
> early boot debugging.
> 
> Please merge this patch set.
> 
OK, got it. Applied.

Thanks,
Kukjin
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