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Re: [lm-sensors] LM90 driver and ti tmp461 detection

From Guenter Roeck <linux@roeck-us.net>
Newsgroups linux.kernel
Subject Re: [lm-sensors] LM90 driver and ti tmp461 detection
Date 2015-12-17 16:00 +0100
Message-ID <qGIcb-Ma-27@gated-at.bofh.it> (permalink)
References (1 earlier) <qEczM-gM-7@gated-at.bofh.it> <qEd2O-GC-15@gated-at.bofh.it> <qEPhL-My-1@gated-at.bofh.it> <qFZRM-64B-19@gated-at.bofh.it> <qGFeh-7iO-5@gated-at.bofh.it>
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On Thu, Dec 17, 2015 at 12:48:08PM +0100, Jean Delvare wrote:
> Hi Andreas,
> 
> On Tue, 15 Dec 2015 16:11:24 +0100, Andreas Werner wrote:
> > here is the register dump of the tmp461.
> 
> Thanks.
> 
> > It seemse that we really cannot detect if it is a tmp461 or a tmp451.
> > Also the magic "ID Register" offset 0xff is 0x00 for both devices.
> 
> I would use register 0x16, which doesn't exist but reads 0x00 on the
> TMP451. It could in theory also read 0x00 on the TMP461 but only if
> both channels are disabled, which makes little sense. More likely at
> least one channel will be enabled so you'll have value 0x01-0x03 if
> this is a TMP461.
> 
Excellent idea!

Guenter
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Thread

Re: [lm-sensors] LM90 driver and ti tmp461 detection Jean Delvare <jdelvare@suse.de> - 2015-12-12 11:10 +0100
  Re: [lm-sensors] LM90 driver and ti tmp461 detection Andreas Werner <andreas.werner@men.de> - 2015-12-15 16:40 +0100
    Re: [lm-sensors] LM90 driver and ti tmp461 detection Jean Delvare <jdelvare@suse.de> - 2015-12-17 12:50 +0100
      Re: [lm-sensors] LM90 driver and ti tmp461 detection Andreas Werner <andreas.werner@men.de> - 2015-12-17 13:00 +0100
      Re: [lm-sensors] LM90 driver and ti tmp461 detection Guenter Roeck <linux@roeck-us.net> - 2015-12-17 16:00 +0100
        Re: [lm-sensors] LM90 driver and ti tmp461 detection Andreas Werner <andreas.werner@men.de> - 2015-12-18 09:30 +0100

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