Mark Brown wrote: > On Mon, Aug 01, 2011 at 04:48:54PM -0500, Timur Tabi wrote: >> The Data Collection Manager (DCM) is a feature of the FPGA on some Freescale >> PowerPC reference boards that can read temperature, current, and voltage >> settings from the sensors on those boards. This driver exposes the DCM via a >> sysfs interface (/sys/devices/platform/fsl-ocm.0). > > This sounds like it should be a hwmon driver.
I didn't see any way to interface the hardware to the hwmon layer in a manner that provides the information that our customers went using this hardware. >> The DCM collects and tallies data over a period of time in the background, >> without utilizing any resources on the host (CPU, memory, etc). The data is >> summarized and made available when data collection stops. This allows power >> consumption to be measured while the host is performing some tasks (usually >> a benchmark). > > Though this is a bit odd for the subsystem I don't think it's too far > out of what other hwmon chips can do, some of them do have longer term > stats than just instantaneous readings. Can you show an example or some documentation? I couldn't find anything remotely like that. I don't even see anything that lets me start/stop monitoring of sensors. -- Timur Tabi Linux kernel developer at Freescale _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
