linux-kernel - Re: [PATCH v5 18/18] Documentation: ACPI for ARM64

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Date:	Thu, 1 Jan 2015 20:04:24 +0000
From:	Graeme Gregory <gg@...mlogic.co.uk>
To:	Hanjun Guo <hanjun.guo@...aro.org>
Cc:	ashwinc@...eaurora.org, catalin.marinas@....com, rjw@...ysocki.net,
	mark.rutland@....com, olof@...om.net, grant.likely@...aro.org,
	will.deacon@....com, linaro-acpi@...ts.linaro.org,
	Liviu.Dudau@....com, lv.zheng@...el.com, robh@...nel.org,
	Lorenzo.Pieralisi@....com, al.stone@...aro.org,
	daniel.lezcano@...aro.org, robert.moore@...el.com,
	linux-acpi@...r.kernel.org, Charles.Garcia-Tobin@....com,
	rric@...nel.org, jason@...edaemon.net, arnd@...db.de,
	marc.zyngier@....com, jcm@...hat.com, broonie@...nel.org,
	"bhelgaas@...gle.com." <linux-arm-kernel@...ts.infradead.org>,
	graeme.gregory@...aro.org, Kangkang.Shen@...wei.com,
	rdunlap@...radead.org, linux-kernel@...r.kernel.org,
	Sudeep.Holla@....com
Subject: Re: [PATCH v5 18/18] Documentation: ACPI for ARM64

On Wed, Dec 31, 2014 at 04:34:46PM +0800, Hanjun Guo wrote:
> On 2014年12月31日 04:13, ashwinc@...eaurora.org wrote:
> >Hi Hanjun,
> >
> >Overall the document looks good to us. Some minor clarifications below.
> >
> >>---------- Forwarded message ----------
> >>From: Graeme Gregory <graeme.gregory@...aro.org>
> >>
> >>Add documentation for the guidelines of how to use ACPI
> >>on ARM64.
> >>
> >>Signed-off-by: Graeme Gregory <graeme.gregory@...aro.org>
> >>Signed-off-by: Al Stone <al.stone@...aro.org>
> >>Signed-off-by: Hanjun Guo <hanjun.guo@...aro.org>
> >>---
> >>  Documentation/arm64/arm-acpi.txt |  323
> >>++++++++++++++++++++++++++++++++++++++
> >>  1 file changed, 323 insertions(+)
> >>  create mode 100644 Documentation/arm64/arm-acpi.txt
> >>
> >
> >[..]
> >
> >>+Relationship with Device Tree
> >>+-----------------------------
> >
> >[..]
> >
> >>+When booting using ACPI tables, the /chosen node in DT will still be
> >>parsed
> >>+to extract the kernel command line and initrd path.  No other section of
> >>the
> >>+DT will be used.
> >
> >Is this still true?
> 
> No, we can booting the ACPI system in EFI stub without dtb. Catalin
> also pointed out this issue, I will remove this paragraph.
> 

The paragraph is still correct, the /chosen node is always present even
if nothing else is.

Graeme

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