On Sat, Oct 8, 2011 at 2:25 PM, Wolfgang Fritz <wolfgang.fritz@xxxxxxx> wrote: > 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) It's the way it is. > 2. What do the 3 clock/voltage modes per power state mean? On r6xx+, each power state defines an operating state (e.g., single head battery, multi-head battery, single head performance, multi-head performance, etc.). Within each operating state, there are high/mid/low clock modes that the define that operating state. So if you have one head active and are on battery, the driver should switch between the high/mid/low clock modes defined in that power state based on the GPU load. If you enable multi-head and are still on battery, the driver would switch to the multi-head battery state and switch between the high/mid/low modes in that state. Alex > > Regards, > Wolfgang > > > > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/dri-devel > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
