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SubjectRE: [RFC PATCH 5/6] ACPI: Introduce ACPI I2C controller enumeration driver
Date


> -----Original Message-----
> From: Alan Cox [mailto:alan@lxorguk.ukuu.org.uk]
> Sent: Friday, September 28, 2012 8:54 PM
> To: Zhang, Rui
> Cc: LKML; linux-pm; linux-i2c; linux-acpi@vger.kernel.org; Len, Brown;
> Rafael J. Wysocki; Grant Likely; Dirk Brandewie
> Subject: Re: [RFC PATCH 5/6] ACPI: Introduce ACPI I2C controller
> enumeration driver
> Importance: High
>
> On Fri, 28 Sep 2012 15:40:32 +0800
> Zhang Rui <rui.zhang@intel.com> wrote:
>
> > >From 6077a62f2865201ab6727ca7d628ee5e43aa57e1 Mon Sep 17 00:00:00
> > >2001
> > From: Zhang Rui <rui.zhang@intel.com>
> > Date: Fri, 24 Aug 2012 15:18:25 +0800
> > Subject: [RFC PATCH 5/6] ACPI: Introduce ACPI I2C controller
> > enumeration driver
> >
> > This driver is able to
> > 1) enumerate I2C controller via ACPI namespace
> > and register it as a platform device.
> > 2) enumerate I2C slave devices via ACPI namespace.
>
> Will this also trigger and work with the ACPI4 based devices that seem
> to have I²C tables that Linux currently doesn't understand (eq some
> GMA600/Oaktrail platforms) ?

I'm not aware of this. I think the answer is probably "No"
because these PNPids are pretty new.
But we can check FADT.revision to make the driver work
on ACPI5 platforms only.

Thanks,
rui

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