66AK2G12: LM63 driver sysfs files missing

Tom Chen

Part Number: 66AK2G12
Other Parts Discussed in Thread: LM63

Hi,

We are using LM63 as our temperature sensor and fan control chip. There are many sysfs files that the lm63.c driver can export. However, on our system which uses TI 66AK2G12 CPU, only one, temp1_input , is availabe:

# ls /sys/class/hwmon/hwmon0/
device@ name power/ subsystem@ temp1_input uevent

Other Linux OS can show dozen files. See e2e.ti.com/.../linux-lm63-about-linux-driver-for-lm63

Any idea why? I am wondering if this is the TI's customized Linux OS issue that our system is based upon, ie,

k2g-evm-linux-sdk-src-06.03.00.106/board-support/linux-4.19.94+gitAUTOINC+be5389fd85-gbe5389fd85

Tom

over 1 year ago

0 Andreas Dannenberg over 1 year ago

TI__Guru 64817 points

Tom Chen said:
Any idea why? I am wondering if this is the TI's customized Linux OS issue that our system is based upon, ie,

Sounds like you'd want to figure out if you are using the latest/most current driver (probably not), and then backport the latest from the public Linux Kernel tree (https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/hwmon/lm63.c) to your system to get access to additional sensor inputs.

Regards, Andreas

0 Tom Chen over 1 year ago in reply to Andreas Dannenberg

Prodigy 150 points

Andreas,

Thanks! It is a silly mistake - I forgot to add this driver to kernel.....

Tom

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66AK2G12: LM63 driver sysfs files missing