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SubjectRe: [lm-sensors] [PATCH 1/2] hwmon: tmp401: add support for TI TMP435
On Thu, 4 Dec 2014 15:33:47 +0100, Bartosz Golaszewski wrote:
> 2014-12-04 15:19 GMT+01:00 Guenter Roeck <linux@roeck-us.net>:
> > The datasheet claims otherwise (0x31, specifically).
> > Is this based on real chip information ?
> > Can you send me the output from i2cdump for the chip ?
> >
>
> This is what I'm reading:
>
> # i2cdump -y 1 0x4c
> No size specified (using byte-data access)
> 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
> 00: 1a 1b 00 00 05 55 00 55 00 00 05 55 00 55 00 0d ??..?U.U..?U.U.?
> 10: 70 00 00 00 00 90 00 00 00 55 1c XX XX XX XX 00 p....?...U?XXXX.
> 20: 55 0a 70 XX XX 0f XX XX XX XX XX XX XX XX XX XX U?pXX?XXXXXXXXXX
> 30: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> 40: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> 50: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> 60: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> 70: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> 80: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> 90: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> a0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> b0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> c0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> d0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> e0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
> f0: XX XX XX XX XX XX XX XX XX XX XX XX 00 35 55 35 XXXXXXXXXXXX.5U5
>
> # i2cget -y 1 0x4c 0xff b
> 0x35

That makes sense for a chip named TMP435. Looks like TI forgot to
update the value when copying the datasheet from TMP431 to TMP435.

Thanks for the dump, by the way :)

--
Jean Delvare
SUSE L3 Support


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