Bug 43114

Summary: Can't set high engine clock for RadeonHD 6620G
Product: Drivers Reporter: RussianNeuroMancer (russianneuromancer)
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: RESOLVED PATCH_ALREADY_AVAILABLE    
Severity: normal    
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: Subsystem:
Regression: No Bisected commit-id:
Attachments: dmesg
cpuinfo
lspci

Description RussianNeuroMancer 2012-04-17 00:02:48 UTC 
APU model: A8-3500M with Radeon HD 6620G.
Laptop model: Acer Aspire 7560G.
According to official specs of this APU
http://www.amd.com/us/products/notebook/apu/mainstream/Pages/mainstream.aspx#6
https://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units#cite_ref-122
GPU core clock on high profile should be 444 MHz, but even when I set high profile manually

~# cat /sys/class/drm/card0/device/power_method
profile
~# cat /sys/class/drm/card0/device/power_profile
high

GPU core clock is not 444 MHz anyway, even below 200 MHz:
~$ cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 200000 kHz
current engine clock: 7990 kHz
default memory clock: 667000 kHz
Maybe output of radeon_pm_info is incorrect, because change between different profiles and dynpm make no difference in radeon_pm_info information.

Reproduceable with Linux 3.2 and Linux 3.4rc3. dmesg of 3.4rc3 boot process attached. Is there any additional information I need to provide?
Comment 1 RussianNeuroMancer 2012-04-17 00:03:21 UTC 
Created attachment 72934 [details]
dmesg
Comment 2 RussianNeuroMancer 2012-04-17 00:03:38 UTC 
Created attachment 72935 [details]
cpuinfo
Comment 3 RussianNeuroMancer 2012-04-17 00:03:57 UTC 
Created attachment 72936 [details]
lspci
Comment 4 RussianNeuroMancer 2013-07-04 09:48:10 UTC 
Should be resolved now (in Linux 3.11) by AMD Power Management patches.

P.S. Hopefully I set right bugreport status.