control:configs:everest: Use memory DVFS temps
Instead of hardcoding the increase and decrease temperatures for the
memory related sensors, do the same as what was done for the processor
core and ioring temps and use an offset from the DVFS (dynamic
voltage and frequency scaling) sensor for that sensor type.
This is being done because DDR4 and DDR5 memory have different DVFS
temperatures where the OCC starts throttling/slewing, and so just
hardcoding a single temperature value wouldn't work.
The *_increase_temp and *_decrease_temp modifier values were chosen such that
the final increase and decrease parameter temperature values were the
same as what the hardcoded temperatures were for DDR4. They were
calculated by subtracting the old increase/decrease temp values from the
DVFS value.
Tested:
Checked the parameters that were present on an Everest:
"dram_extmb_dvfs_decrease_temp": 52.0,
"dram_extmb_dvfs_increase_temp": 55.0,
"pmic_dvfs_decrease_temp": 55.0,
"pmic_dvfs_increase_temp": 58.0,
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I4e76cfc13325df3a3c3d0a993381f2418c088c24
2 files changed