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Does the Linux kernel configure videochip in at91rm9200dk?

Posted: Mon Mar 19, 2007 5:57 pm
by AndrewMik
Does the kernel configure videochip in at91rm9200dk?

What configuration does it use for s1d13806 by default?

What is common practice of configuring videochip with Linux?

I use 2.6.20 kernel version with patch for at91rm9200dk from maxim.

Thank you.


Posted: Tue Mar 20, 2007 9:47 am
by mwolfram

have you checked in your kernel configuration that framebuffer support is enabled and the driver too? Can you see any output from the driver telling it's something wrong?


Posted: Tue Mar 20, 2007 11:26 am
by AndrewMik
Yes, of course, kernel is configured, dev/fb0 exists.
Test program opens the device fb0.
That test program works under 2.4.27 kernrel but wiht 2.6.20 LCD screen is dark... I think that video chip simply doesnt configured for LCD by default.
There are a structure named s1d13xxxfb_regval dk_s1dfb_initregs in linux-2.6.20\arch\arm\mach-at91rm9200\bord-dk.c , I'll try to modify it today.
Thank you

Posted: Tue Mar 20, 2007 3:04 pm
by AndrewMik
Yes!!! It works now!

Configurate your LCD panel here - linux-2.6.20\arch\arm\mach-at91rm9200\bord-dk.c

structure s1d13xxxfb_regval dk_s1dfb_initregs

Thank you