xref: /openbmc/linux/Documentation/fb/sm712fb.rst (revision 6c33a6f4)
1================
2What is sm712fb?
3================
4
5This is a graphics framebuffer driver for Silicon Motion SM712 based processors.
6
7How to use it?
8==============
9
10Switching modes is done using the video=sm712fb:... boot parameter.
11
12If you want, for example, enable a resolution of 1280x1024x24bpp you should
13pass to the kernel this command line: "video=sm712fb:0x31B".
14
15You should not compile-in vesafb.
16
17Currently supported video modes are:
18
19Graphic modes
20-------------
21
22===  =======  =======  ========  =========
23bpp  640x480  800x600  1024x768  1280x1024
24===  =======  =======  ========  =========
25  8  0x301    0x303    0x305     0x307
26 16  0x311    0x314    0x317     0x31A
27 24  0x312    0x315    0x318     0x31B
28===  =======  =======  ========  =========
29
30Missing Features
31================
32(alias TODO list)
33
34	* 2D acceleratrion
35	* dual-head support
36