linux-kernel - Re: [PATCH 6/7] arm: mediatek: enable gpt6 on boot up to make arch timer working

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Date:	Thu, 30 Oct 2014 10:01:19 +0100
From:	Matthias Brugger <matthias.bgg@...il.com>
To:	Yingjoe Chen <yingjoe.chen@...iatek.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>, Pawel Moll <pawel.moll@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	Heiko Stübner <heiko@...ech.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stefan@...er.ch" <stefan@...er.ch>,
	Stephen Warren <swarren@...dia.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Kumar Gala <galak@...eaurora.org>,
	Olof Johansson <olof@...om.net>,
	Mike Turquette <mturquette@...aro.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	"Berg, Anders" <anders.berg@....com>,
	Jason Cooper <jason@...edaemon.net>
Subject: Re: [PATCH 6/7] arm: mediatek: enable gpt6 on boot up to make arch
 timer working

2014-10-30 4:23 GMT+01:00 Yingjoe Chen <yingjoe.chen@...iatek.com>:
> Hi Matthias,
>
> On Mon, 2014-10-27 at 11:28 +0100, Matthias Brugger wrote:
>> Hi Joe,
>>
>> 2014-10-24 15:53 GMT+02:00 Yingjoe Chen <srv_yingjoe.chen@...iatek.com>:
>> >
>> > Hi Matthias,
>> >
>> > I didn't saw this in v3.18-rc1, are you working on version 2 of this?
>> > mt8135 and m8127 also need this fixup and we need this to have SMP
>> > working.
>>
>> I had a discussion with Mark Rutland from ARM on this [0].
>> At that point he convinced me that this was not critical.
>>
>> If we need this for SMP, things really change here I think.
>
> We have some driver now, and we started to implement SMP enable method
> internally. I think it is reasonable to discuss this now.
> We could include this patch in our SMP patch series. Do you prefer we do
> this?

Alright. Please remind that we don't need to set the cntfreq register
here but define the clock frequency in the dts.

Thanks,
Matthias

>
> Joe.C
>
>
>



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