On Tue, 2011-02-22 at 14:56 -0500, Jean Delvare wrote: > Hi Guenter, > > On Tue, 22 Feb 2011 11:29:46 -0800, Guenter Roeck wrote: > > Fwiw, I have a system with TI TMP75AIDGKT (per HW spec). Detection code > > doesn't work for it, since it always returns 0xff when reading registers > > 0x4..0x7. So the lm75 detection code is really of limited value and can > > not be expected to work for all chips supported by the driver. > > And it was never meant to. As said before, the detection of the LM75 > proper is there only because the chip was once popular on PC > mainboards. None of the other chips supported by the lm75 driver was as > far as I know. > > > Here is a register dump: > > > > root# i2cdump -y 70 0x48 > > 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: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 10: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 20: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 30: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 40: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 50: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 60: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 70: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 80: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > 90: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > a0: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > b0: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > c0: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > d0: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > e0: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > f0: 13 00 4b 50 ff ff ff ff 13 00 4b 50 ff ff ff ff ?.KP....?.KP.... > > Added to my collection, thanks :) But there is no way to detect this > chip reliably. > I didn't expect it to; our code uses i2c_register_board_info(). Just trying to show how unreliable chip detection is for this chip. Thanks, Guenter _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
