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87 lines
2.3 KiB
87 lines
2.3 KiB
#!/bin/sh -e
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# TODO: check for root privileges
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# TODO: check if all the required tools are available
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CPUS="$(nproc)"
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GOVERNOR='ondemand'
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# Out your wanted values here
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CORE_SPEED_HZ_P0=2300000 # 2.30GHz slightly over the base (2.10GHz)
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CORE_SPEED_HZ_P1=1450000 # 1.45GHz
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CORE_SPEED_HZ_P2=1000000 # 1.00GHz
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# wanted voltage in millivolts
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VOLTAGE_MV_P0=1125 # this should be stable
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VOLTAGE_MV_P1=900
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VOLTAGE_MV_P2=850
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# Power limits
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SUSTAINED_LIMIT_MW=10000
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SLOW_LIMIT_MW=20000
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# Temperature limits
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MAX_TEMP_C=85
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# set cpu frequency scaling driver, use acpi_cpufreq since the ryzen 5 3500u
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# does not support the amd_pstate driver
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# acpi_cpufreq is already the default
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# enable cpu frequency boost if available
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echo 1 > /sys/devices/system/cpu/cpufreq/boost
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# set governor
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for c in $(seq 0 $((CPUS-1)))
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do
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echo $GOVERNOR > /sys/devices/system/cpu/"cpu$c"/cpufreq/scaling_governor
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done
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#
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# set voltage
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# ===========
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VID_P0="$(amdctl -u $VOLTAGE_MV_P0 | grep vid | awk '{print $3}')"
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VID_P1="$(amdctl -u $VOLTAGE_MV_P1 | grep vid | awk '{print $3}')"
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VID_P2="$(amdctl -u $VOLTAGE_MV_P2 | grep vid | awk '{print $3}')"
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for c in 0 .. $((CPUS-1))
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do
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amdctl -s -m -c $c -p 0 -v "$VID_P0"
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amdctl -s -m -c $c -p 1 -v "$VID_P1"
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amdctl -s -m -c $c -p 2 -v "$VID_P2"
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done
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#
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# set frequency
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# =============
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# TODO: get this from amdctl
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REFERENCE_CLOCK=100000
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DID_P0="$(amdctl -c 0 -p 0 -g | grep -1 CpuDid | sed -n '3p' | awk '{print $4}')"
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DID_P1="$(amdctl -c 0 -p 1 -g | grep -1 CpuDid | sed -n '3p' | awk '{print $4}')"
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DID_P2="$(amdctl -c 0 -p 2 -g | grep -1 CpuDid | sed -n '3p' | awk '{print $4}')"
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# FIXME: this is taken from https://github.com/kevinlekiller/amdctl/blob/master/amdctl.c#L988
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# it would be better to submint a pull request and add an option to
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# this automatically for each processor family
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FID_P0="$(((CORE_SPEED_HZ_P0*DID_P0)/(REFERENCE_CLOCK*2)))"
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FID_P1="$(((CORE_SPEED_HZ_P1*DID_P1)/(REFERENCE_CLOCK*2)))"
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FID_P2="$(((CORE_SPEED_HZ_P2*DID_P2)/(REFERENCE_CLOCK*2)))"
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for c in 0 .. $((CPUS-1))
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do
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amdctl -s -m -c $c -p 0 -f $FID_P0
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amdctl -s -m -c $c -p 1 -f $FID_P1
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amdctl -s -m -c $c -p 2 -f $FID_P2
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done
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#
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# Power Limits
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# ============
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ryzenadj --stapm-limit=$SUSTAINED_LIMIT_MW \
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--tctl-temp=$MAX_TEMP_C \
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--slow-limit=$SLOW_LIMIT_MW
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# TODO: undervolt and overclock slightly the GPU
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