linux-kernel - Re: [PATCH 3/3] ARM: mach-shmobile: sh7372 A4R support (v4)

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Date:	Thu, 3 Nov 2011 00:17:00 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Magnus Damm <magnus.damm@...il.com>
Cc:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	"Linux-sh list" <linux-sh@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] ARM: mach-shmobile: sh7372 A4R support (v4)

On Wednesday, November 02, 2011, Magnus Damm wrote:
> On Wed, Nov 2, 2011 at 11:38 AM, Guennadi Liakhovetski
> <g.liakhovetski@....de> wrote:
> > On Thu, 20 Oct 2011, Rafael J. Wysocki wrote:
> >
> >> From: Magnus Damm <damm@...nsource.se>
> >>
> >> This change adds support for the sh7372 A4R power domain.
> >
> > This version still breaks I2C (#0) on mackerel. Tested with your
> > sh7372-test branch of Oct 18th plus these four patches:
> >
> > 6b29305a PM / Domains: Add default power off governor function (v2)
> > 3d578ae PM / Domains: Add device stop governor function (v2)
> > 6c2cd02 ARM: mach-shmobile: sh7372 A4R support (v4)
> > 9da11f4 ARM: mach-shmobile: sh7372 A3SP support (v4)
> 
> Exactly how does it break IIC0?

It causes some initialization issues to happen.  I get the following
messages on every boot:

i2c-sh_mobile i2c-sh_mobile.0: Transfer request timed out
i2c-sh_mobile i2c-sh_mobile.0: Polling timed out

three times in a row (there's a delay too).

The A4R patch is the source of that.

> Does the same happen with the code base for upcoming 3.2-rc1 from
> latest linux git?

Yes, it does, AFAICT.

Thanks,
Rafael
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