Hello,
I have an HP Elitebook 8560p with Radeon HD7470M graphics, running
Debian sid with kernel 3.0.4.
I noticed that the power profiles low and mid are setting identical
clocks and voltage, the lowest possible values:
default engine clock: 750000 kHz
current engine clock: 99990 kHz
default memory clock: 900000 kHz
current memory clock: 149970 kHz
voltage: 900 mV
Looking at the code, this seems to be intentional at least for the
mobility chips, but the chip provides more modes:
[ 9.361401] [drm] R600: Number of power states = 7
[ 9.361402] [drm] Is mobility = YES
[ 9.361403] [drm] ps #0 type 0, modes=3
[ 9.361404] [drm] 0: mclk=90000, sclk=75000, volt=1100, vddci=0
[ 9.361406] [drm] 1: mclk=90000, sclk=75000, volt=1100, vddci=0
[ 9.361407] [drm] 2: mclk=90000, sclk=75000, volt=1100, vddci=0
[ 9.361409] [drm] ps #1 type 4, modes=3
[ 9.361410] [drm] 0: mclk=15000, sclk=10000, volt=900, vddci=0
[ 9.361411] [drm] 1: mclk=90000, sclk=40000, volt=1000, vddci=0
[ 9.361413] [drm] 2: mclk=90000, sclk=75000, volt=1100, vddci=0
[ 9.361414] [drm] ps #2 type 0, modes=3
[ 9.361415] [drm] 0: mclk=90000, sclk=70000, volt=1100, vddci=0
[ 9.361417] [drm] 1: mclk=90000, sclk=70000, volt=1100, vddci=0
[ 9.361418] [drm] 2: mclk=90000, sclk=70000, volt=1100, vddci=0
[ 9.361419] [drm] ps #3 type 2, modes=3
[ 9.361420] [drm] 0: mclk=15000, sclk=10000, volt=900, vddci=0
[ 9.361422] [drm] 1: mclk=15000, sclk=10000, volt=900, vddci=0
[ 9.361423] [drm] 2: mclk=30000, sclk=30000, volt=900, vddci=0
[ 9.361424] [drm] ps #4 type 2, modes=3
[ 9.361426] [drm] 0: mclk=65000, sclk=40000, volt=900, vddci=0
[ 9.361427] [drm] 1: mclk=65000, sclk=40000, volt=900, vddci=0
[ 9.361428] [drm] 2: mclk=65000, sclk=40000, volt=900, vddci=0
[ 9.361430] [drm] ps #5 type 2, modes=3
[ 9.361431] [drm] 0: mclk=30000, sclk=30000, volt=900, vddci=0
[ 9.361433] [drm] 1: mclk=30000, sclk=30000, volt=900, vddci=0
[ 9.361434] [drm] 2: mclk=30000, sclk=30000, volt=900, vddci=0
[ 9.361435] [drm] ps #6 type 0, modes=3
[ 9.361436] [drm] 0: mclk=65000, sclk=40000, volt=900, vddci=0
[ 9.361438] [drm] 1: mclk=65000, sclk=40000, volt=900, vddci=0
[ 9.361439] [drm] 2: mclk=65000, sclk=40000, volt=900, vddci=0
[ 9.361440] [drm] NOT CHIP_R600
(dmesg output from patched radeon module)
Questions:
1. Is this a bug or a feature? (I see that it is not obvious which power
state to choose)
2. What do the 3 clock/voltage modes per power state mean?
Regards,
Wolfgang
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