linux-kernel - Re: [PATCH 18/20] clocksource / acpi: Add macro CLOCKSOURCE_ACPI

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Message-ID: <52DCE790.6080809@linaro.org>
Date:	Mon, 20 Jan 2014 17:08:32 +0800
From:	Hanjun Guo <hanjun.guo@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
CC:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	linux-acpi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Grant Likely <grant.likely@...aro.org>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Olof Johansson <olof@...om.net>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Rob Herring <robh@...nel.org>,
	Mark Rutland <mark.rutland@....com>, patches@...aro.org,
	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	linaro-acpi@...ts.linaro.org, Charles.Garcia-Tobin@....com,
	Amit Daniel Kachhap <amit.daniel@...sung.com>
Subject: Re: [PATCH 18/20] clocksource / acpi: Add macro CLOCKSOURCE_ACPI_DECLARE

On 2014-1-17 22:21, Arnd Bergmann wrote:
> On Friday 17 January 2014, Hanjun Guo wrote:
>>
>> From: Amit Daniel Kachhap <amit.daniel@...sung.com>
>>
>> This macro does the same job as CLOCKSOURCE_OF_DECLARE. The device
>> name from the ACPI timer table is matched with all the registered
>> timer controllers and matching initialisation routine is invoked.
> 
> I wouldn't anticipate this infrastructure to be required. Shouldn't all
> ARMv8 machines have an architected timer?

I not sure of this, could anyone can give some guidance? if only arch
timer is available for ARM64, this will make thing very simple.

Thanks
Hanjun
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