Subject: [PATCH 2/3] hwmon: Driver for OMAP3 temperature sensor

From: [email-masked] (Pavel Machek)
Date: Tue, 30 Dec 2014 23:46:22 +0100

On Mon 2014-12-29 11:04:48, Guenter Roeck wrote:
> On Mon, Dec 29, 2014 at 07:15:56PM +0100, Pavel Machek wrote:
> > On Mon 2014-12-29 12:01:03, Nishanth Menon wrote:
> > > On Mon, Dec 29, 2014 at 11:52 AM, Grazvydas Ignotas <[email-masked]> wrote:
> > > > On Fri, Dec 26, 2014 at 2:34 PM, Sebastian Reichel <[email-masked]> wrote:
> > > >> OMAP34xx and OMAP36xx processors contain a register in the syscon area,
> > > >> which can be used to determine the SoCs temperature. This patch provides
> > > >> a DT based driver for the temperature sensor based on an older driver
> > > >> written by Peter De Schrijver for the Nokia N900 and N9.
> > > >
> > > > The sensor looks like an earlier iteration of sensors used in newer
> > > > OMAPs, which are already supported by maybe
> > > > drivers/thermal/ti-soc-thermal/ , maybe it would make sense to update
> > > > that driver instead?
> > > 
> > > Just to be clear - OMAP4 is the first time that the sensors were
> > > reliable enough to be used.
> > 
> > When testing initial version of the patch, they seem to work very well
> > in the omap3 case.
> > 
> Pavel,
> 
> can you look into the omap4 thermal driver to see if it can be used ?

The hardware registers are named the same way...

Unfortunately, TI moves registers around with each release, and OMAP4
stuff is _way_ more complex and maze of ifdefs, too.

static struct temp_sensor_data omap4430_mpu_temp_sensor_data = {
        .min_freq = OMAP4430_MIN_FREQ,
 	.max_freq = OMAP4430_MAX_FREQ,
 	.max_temp = OMAP4430_MAX_TEMP,
	.min_temp = OMAP4430_MIN_TEMP,
 	.hyst_val = OMAP4430_HYST_VAL,
	};

and each define used just once. Would be easier to read and modify if
the ifdefs were removed...
	
Best regards,
								Pavel
-- 
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