Bug 1383736

Summary: CPUFREQ empty
Product: [Fedora] Fedora Reporter: Nicolas R. <nicolas>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 24CC: gansalmon, ichavero, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab, nicolas, pbrobinson
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Last Closed: 2016-11-20 12:56:56 UTC Type: Bug
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Bug Blocks: 245418    

Description Nicolas R. 2016-10-11 15:57:26 UTC 
Description of problem:

On FC24 for ARM, the CPUFREQ seems missing on kernel 4.7.6-200 for ARMV7HL
It was existing in default kernel in image (4.5.5-300)



Version-Release number of selected component (if applicable):
4.7.6-200


How reproducible:
Boot as 4.7.6-300 kernel.
Folder /sys/device/system/cpu/cpufreq is empty.


Image is Fedora 24 server for BananaPi
Comment 1 Peter Robinson 2016-10-12 11:17:07 UTC 
Can you see if you can work out where it disappeared? Was it there for the 4.6.x kernel series?
Comment 2 Nicolas R. 2016-10-12 15:25:56 UTC 
Of course.
Following kernels here https://kojipkgs.fedoraproject.org/packages/kernel/
The 4.6.7-300 doesn't work too.
Trying other one and tell you here asap.
Comment 3 Nicolas R. 2016-10-12 16:54:37 UTC 
Working on last 4.5.x for FC24 (4.5.7-300).
Not working on first 4.6 for FC24 (4.6.3-300)

So it was lost on 4.6 :(
Comment 4 Peter Robinson 2016-10-15 11:49:31 UTC 
https://paste.fedoraproject.org/450440/14765313/

So there's nothing specific to cpufreq that's changed between those kernel configs. The expected module (cpufreq-dt.ko) is still there. So the question is what else has changed...
Comment 5 Peter Robinson 2016-11-01 14:04:10 UTC 
I think this should now be fixed with kernel-4.8.4-200.fc24

$ cat /sys/bus/cpu/devices/cpu0/cpufreq/scaling_governor
ondemand
$ cat /sys/bus/cpu/devices/cpu0/cpufreq/cpuinfo_cur_freq
350000
$ cat /sys/bus/cpu/devices/cpu0/cpufreq/cpuinfo_max_freq
920000
Comment 6 Nicolas R. 2016-11-28 15:12:25 UTC 
Cannot try my bananapi is not available :(