-- -proposed testing --
CAVM_CN99xx# env set cppccontrol 1
cppccontrol is enabled
Env Var cppccontrol set with Value 1
Execute 'env save' Command to make the changes persistent
CAVM_CN99xx# env save
drivername snor
snor_erase: off=0x3ff0000, len=0x10000
-----------------------------------
ENV Variable Settings
-----------------------------------
Name : Value
-----------------------------------
turbo : 0
smt : 4
corefreq : 2199
numcores : 28
icispeed : 1
socnclk : 666
socsclk : 1199
memclk : 2199
ddrspeed_auto : 0
ddrspeed : 2400
progcpufreq : 1
progdevfreq : 1
dmc_node_channel_mask : 0000ffff
thermcontrol : 1
thermlimit : 105
enter_debug_shell : 0
dbg_speed_up_ddr_lvl : 0
enable_dram_scrub : 0
ipmbcontrol : 1
ddr_dmt_advanced : 0
cppccontrol : 1
loglevel : 0
uart_params : 115200/8-N-1 none
core_feature_mask : 32
sys_feature_mask : 0x00000000
ddr_refresh_rate : 1
fw_feature_mask : 0x00000000
dram_ce_threshold : 500
dram_ce_window : 60 sec
dram_ce_leak_rate : 1 msec/error
pcie_ce_threshold : 1
pcie_ce_window : 30 sec
pcie_ce_leak_rate : 15000 msec/error
-----------------------------------
CAVM_CN99xx#
ubuntu@helo:~$ ls -lR /sys/devices/system/cpu/cpu1/acpi_cppc/
/sys/devices/system/cpu/cpu1/acpi_cppc/:
total 0
-r--r--r-- 1 root root 4096 Oct 29 17:20 feedback_ctrs
-r--r--r-- 1 root root 4096 Oct 29 17:20 highest_perf
-r--r--r-- 1 root root 4096 Oct 29 17:20 lowest_nonlinear_perf
-r--r--r-- 1 root root 4096 Oct 29 17:20 lowest_perf
-r--r--r-- 1 root root 4096 Oct 29 17:20 nominal_perf
-r--r--r-- 1 root root 4096 Oct 29 17:20 reference_perf
-r--r--r-- 1 root root 4096 Oct 29 17:20 wraparound_time
ubuntu@helo:~$ cat /sys/devices/system/cpu/cpu1/acpi_cppc/highest_perf
2500000
ubuntu@helo:~$ cat /sys/devices/system/cpu/cpu1/acpi_cppc/lowest_perf
1000000
ubuntu@helo:~$ cat /sys/devices/system/cpu/cpu1/acpi_cppc/feedback_ctrs
ref:875323264 del:2186846934
ubuntu@helo:~$
** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1796949
Title:
[Bionic] CPPC bug fixes
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Fix Committed
Bug description:
[Impact]
A number of CPPC related fixes from upstream needed for Cavium ThunderX2
systems.
[Fix]
58e1c03536c9 ACPI / CPPC: Fix invalid PCC channel status errors
b8b10bc2015c cpufreq: CPPC: Don't set transition_latency
d29abc836843 ACPI / CPPC: Update all pr_(debug/err) messages to log the
susbspace id
[Test]
A test kernel is available in ppa:yarmouth-team/cppc-tx2. This kernel was
successfully tested on a CN99XX system.
[Regression Potential]
The cppcontrol feature needs to be explicitly enabled in firmware (default is
disabled) for these patches to be in effect. Risk of regression is low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796949/+subscriptions
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