From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bill.Randle@aei.com (Randle, Bill)
Date: Thu, 5 Apr 2012 00:07:06 +0000
Subject: i.MX28 die temperature
In-Reply-To: <201204050151.54254.marek.vasut@gmail.com>
References: <330B740BA662BF4E8386F534DF556ED819731A@AEDCEXC09.aei.com>
 <20120329023718.GC3254@S2101-09.ap.freescale.net>
 <330B740BA662BF4E8386F534DF556ED8196D1D99@AEDCEXC09.aei.com>
 <201204050151.54254.marek.vasut@gmail.com>
Message-ID: <330B740BA662BF4E8386F534DF556ED8196D9923@AEDCEXC09.aei.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Subject: Re: i.MX28 die temperature
> 
> Dear Randle, Bill,
>  
> > On Wednesday, March 28, 2012 7:37 PM Shawn Guo wrote:
> > > On Wed, Mar 28, 2012 at 03:13:57PM +0000, Randle, Bill wrote:
> > > > Has anyone developed a driver for reading the die temperature from the
> > > > i.MX28? I haven't found anything yet in my searching, but didn't want
> > > > to duplicate effort if someone has something already.
> > > 
> > > The mainline kernel has no support for it, but the release from
> > > Freescale has.
> > > 
> > >   arch/arm/mach-mx28/device.c (battery_data)
> > >   drivers/power/mxs/ddi_bc_ramp.c
> > > 
> > > It'd be nice if you can bring it to mainline.
> > 
> > Thanks for the pointers, Shawn. I'll take a look at the Freescale code.
>
> There's also some code on the linux-iio mailing list for generic MXS LRADC 
> stuff. It included LRADC measurements via SYSFS, temperature readings etc.
>
> I started working on it, but didn't finish it yet.
>
> Best regards,
> Marek Vasut

That would be even better. That's ultimately what I need - an easy way to get access
to that information from user space. I'll look for the linux-iio mailing list archives
and see if I can find that code.

    -Bill

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