Hi Nithin:
* Nithin <nithinkj at hcl.in> [2006-07-29 15:51:29 +0530]:
> I m working in "ASUS NCL-DE Board " in RHEL 3.0 UP5,with lmsensors-2.10.0 and i2c-2.10.0
> In this board w83792d is the health monitoring chip.
> But i am not able to get any of the values.The chip is not even detecting using sensors-detect.
> I have inserted modules i2c-i801,i2c-proc,i2c-dev,i2c-core,w83792d.But the chip is showing in
> /proc/sys/dev/sensors/.
> The reply i got from 'Asus' is, it using the slave addres as 0x5e,smbus base addres 0x400.
> But the driver for w83792d searches in 0x2c to 0x2f (static unsigned short normal_i2c_range[] = { 0x2c, 0x2f, SENSORS_I2C_END };)
That's probably a small misunderstanding about the I2C address space - it has
7 bits address and the 8th is Read/!Write. So, many device datasheets will
say e.g. "read at 0x5f and write at 0x5e". Linux I2C subsystem considers
the address to be the 7 bits only, right justified. So when Asus says 0x5e,
they probably mean what Linux thinks is 0x2f.
I don't think we've ever seen a sensor chip reported in the range of
0x50-0x5f. That is reserved on PCs for the SPD/EEPROMs on your RAM.
After loading i2c-i801 and i2c-dev, what does 'i2cdetect -y 0' tell you?
Regards,
--
Mark M. Hoffman
mhoffman at lightlink.com
