linux-kernel - Re: [PATCH v3 1/2] ARM: Exynos5250: Enabling ehci-s5p driver

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Date:	Fri, 08 Feb 2013 21:41:36 +0000
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Doug Anderson <dianders@...omium.org>,
	Vivek Gautam <gautamvivek1987@...il.com>
Cc:	linux-samsung-soc@...r.kernel.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	devicetree-discuss@...ts.ozlabs.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org, Kukjin Kim <kgene.kim@...sung.com>,
	Vivek Gautam <gautam.vivek@...sung.com>
Subject: Re: [PATCH v3 1/2] ARM: Exynos5250: Enabling ehci-s5p driver

On Fri, 21 Dec 2012 10:13:50 -0800, Doug Anderson <dianders@...omium.org> wrote:
> Vivek,
> 
> 
> On Fri, Dec 21, 2012 at 12:16 AM, Vivek Gautam
> <gautamvivek1987@...il.com> wrote:
> > Hi all,
> >
> >
> > On Wed, Dec 19, 2012 at 7:20 PM, Vivek Gautam <gautamvivek1987@...il.com> wrote:
> >> CC: Doug Anderson
> >>
> >>
> >> On Sat, Dec 15, 2012 at 12:53 PM, Grant Likely
> >> <grant.likely@...retlab.ca> wrote:
> >>> On Thu, 13 Dec 2012 22:06:01 +0530, Vivek Gautam <gautam.vivek@...sung.com> wrote:
> >>>> diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
> >>>> index 462e5ac..b3b9af1 100644
> >>>> --- a/arch/arm/mach-exynos/mach-exynos5-dt.c
> >>>> +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
> >>>> @@ -110,6 +110,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
> >>>>                               "samsung-i2s.1", NULL),
> >>>>       OF_DEV_AUXDATA("samsung,samsung-i2s", 0x12D70000,
> >>>>                               "samsung-i2s.2", NULL),
> >>>> +     OF_DEV_AUXDATA("samsung,exynos4210-ehci", EXYNOS5_PA_EHCI,
> >>>> +                             "s5p-ehci", NULL),
> >>>
> >>> I'm assuming the above change is temporary. What is left to be done to
> >>> drop the auxdata in theses two patches?
> >>>
> >>> Otherwise the patch looks fine.
> >>>
> >>> Acked-by: Grant Likely <grant.likely@...retlab.ca>
> >
> > Any more thought about this patch?
> > Or does this change seems fine?
> 
> I'm fairly certain we can just drop the OF_DEV_AUXDATA entry here.  I
> haven't been following this as closely as I should, but I know that
> the comment for this table says that the whole purpose is to override
> device names and that it should be temporary.  We don't need to do any
> overriding of device names here, do we?
> 
> When I drop this (and the ohci and phy) entries from my table I can
> still boot and still can use USB.  The big difference is what shows up
> in dmesg
> 
> [    1.605000] s5p-ehci s5p-ehci: S5P EHCI Host Controller
> 
> Becomes:
> 
> [    1.550000] s5p-ehci 12110000.usb: S5P EHCI Host Controller
> 
> ...and some sysfs paths change.

Right. Drop the AUXDATA then.  :-)

g.

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