diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/fb/sa1100fb.txt | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/Documentation/fb/sa1100fb.txt')
| -rw-r--r-- | kernel/Documentation/fb/sa1100fb.txt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/kernel/Documentation/fb/sa1100fb.txt b/kernel/Documentation/fb/sa1100fb.txt new file mode 100644 index 000000000..f1b422046 --- /dev/null +++ b/kernel/Documentation/fb/sa1100fb.txt @@ -0,0 +1,39 @@ +[This file is cloned from VesaFB/matroxfb] + +What is sa1100fb? +================= + +This is a driver for a graphic framebuffer for the SA-1100 LCD +controller. + +Configuration +============== + +For most common passive displays, giving the option + +video=sa1100fb:bpp:<value>,lccr0:<value>,lccr1:<value>,lccr2:<value>,lccr3:<value> + +on the kernel command line should be enough to configure the +controller. The bits per pixel (bpp) value should be 4, 8, 12, or +16. LCCR values are display-specific and should be computed as +documented in the SA-1100 Developer's Manual, Section 11.7. Dual-panel +displays are supported as long as the SDS bit is set in LCCR0; GPIO<9:2> +are used for the lower panel. + +For active displays or displays requiring additional configuration +(controlling backlights, powering on the LCD, etc.), the command line +options may not be enough to configure the display. Adding sections to +sa1100fb_init_fbinfo(), sa1100fb_activate_var(), +sa1100fb_disable_lcd_controller(), and sa1100fb_enable_lcd_controller() +will probably be necessary. + +Accepted options: + +bpp:<value> Configure for <value> bits per pixel +lccr0:<value> Configure LCD control register 0 (11.7.3) +lccr1:<value> Configure LCD control register 1 (11.7.4) +lccr2:<value> Configure LCD control register 2 (11.7.5) +lccr3:<value> Configure LCD control register 3 (11.7.6) + +-- +Mark Huang <mhuang@livetoy.com> |