linux-kernel - Re: [PATCH v2 1/5] clocksource: mediatek: do not enable GPT_CLK

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Date:	Mon, 24 Aug 2015 22:22:20 +0800
From:	Yingjoe Chen <yingjoe.chen@...iatek.com>
To:	Daniel Lezcano <daniel.lezcano@...aro.org>
CC:	Daniel Kurtz <djkurtz@...omium.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	James Liao <jamesjj.liao@...iatek.com>,
	Russell King <linux@....linux.org.uk>,
	srv_heupstream <srv_heupstream@...iatek.com>,
	Arnd Bergmann <arnd@...db.de>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Michael Turquette <mturquette@...libre.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Olof Johansson <olof@...om.net>,
	"Rob Herring" <robh+dt@...nel.org>,
	<linux-mediatek@...ts.infradead.org>,
	"Sascha Hauer" <kernel@...gutronix.de>,
	Matthias Brugger <matthias.bgg@...il.com>,
	<linux-clk@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 1/5] clocksource: mediatek: do not enable GPT_CLK_EVT
 when setup

On Mon, 2015-08-24 at 09:51 +0200, Daniel Lezcano wrote:
> On 08/21/2015 04:39 PM, Yingjoe Chen wrote:
> 
> [ ... ]
> 
> >>    - Does the spurious interrupt occurs *every* time ? at each boot ?
> >
> > Yes. If you applied this series to enable mtk timer without this fix on
> > mt8173 or mt8135 you can reproduce it. It occurs for every boot.
> >
> > It crash before uart driver is ready, so you'll have to use earlycon to
> > see the crash log.
> 
> Can you give me the earlycon params ?

Hi Daniel,

You probably already figure this out. anyway I'm using this to enable
earlycon:

Add 'earlycon' in bootargs, and in device tree chosen part, add
"linux,stdout-path=&uart0;"

Joe.C



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