On Wed, Mar 11, 2009 at 06:15:04PM +0100, Paul Menzel wrote:
- In your patchset the patch fb-radeon-intel.patch [1] does include
changes to drivers/video/intelfb/intelfbhw.c although in the install instructions [2] it is stated that intel drivers do not need to be modified.
sorry, install instructions are not up to date for the Intel version of the patch.
The changelog in 0.11 includes these two items.
- patch against intelfb (kernel 2.6.26) to allow for PAL/SCART video timings. You now can use a regular SCART CRT as display for linux console.
- fixed a bug in intelfb initialization which sporadically setup video timing with weirdous values
I guess the installation instructions need to be updated for release 0.11.
right. as said installation instructions have not been touched since a while. I just included the plain Intel patches into the package. There was not yet too much interest in the patches anyway. So I did not want to waste my time for documentation:-)
If this is correct I would update the instructions.
thank you for that.
a) Why is MIN_CLOCK set to 25000 in intelfbhw.h [3]? What would be the downside of setting it to 10000?
MIN_CLOCK is set to 12000 by the patch. What allows for SCART suitable dotclocks. I don't know why the original driver denies such low clock frequencies.
b) Where do I get information about the registers, like what DPLL_A and DPLL_VCO_ENABLE is? In the header file some values are assigned to them, but where is it documented what they mean?
DPLL_A (DPLLA_CTRL-DPLL A Control Register) is documented here:
Intel® 965 Express Chipset Family, Volume Three Section: Display Clock Control Registers
The doc can be found here: http://intellinuxgraphics.org/documentation.html
Cheers Thomas