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| author | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 15:08:05 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 15:08:18 +0200 |
| commit | e060c38434b2caa78efe7cedaff4191040b65a15 (patch) | |
| tree | 407361230bf6733f63d8e788e4b5e6566ee04818 /Documentation/fb | |
| parent | 10e4ac572eeffe5317019bd7330b6058a400dfc2 (diff) | |
| parent | cc39c6a9bbdebfcf1a7dee64d83bf302bc38d941 (diff) | |
Merge branch 'master' into for-next
Fast-forward merge with Linus to be able to merge patches
based on more recent version of the tree.
Diffstat (limited to 'Documentation/fb')
| -rw-r--r-- | Documentation/fb/modedb.txt | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/Documentation/fb/modedb.txt b/Documentation/fb/modedb.txt index ec4dee75a35..16aa0845391 100644 --- a/Documentation/fb/modedb.txt +++ b/Documentation/fb/modedb.txt @@ -20,7 +20,7 @@ in a video= option, fbmem considers that to be a global video mode option. Valid mode specifiers (mode_option argument): - <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] + <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] <name>[-<bpp>][@<refresh>] with <xres>, <yres>, <bpp> and <refresh> decimal numbers and <name> a string. @@ -36,6 +36,21 @@ pixels and 1.8% of yres). Sample usage: 1024x768M@60m - CVT timing with margins +DRM drivers also add options to enable or disable outputs: + +'e' will force the display to be enabled, i.e. it will override the detection +if a display is connected. 'D' will force the display to be enabled and use +digital output. This is useful for outputs that have both analog and digital +signals (e.g. HDMI and DVI-I). For other outputs it behaves like 'e'. If 'd' +is specified the output is disabled. + +You can additionally specify which output the options matches to. +To force the VGA output to be enabled and drive a specific mode say: + video=VGA-1:1280x1024@60me + +Specifying the option multiple times for different ports is possible, e.g.: + video=LVDS-1:d video=HDMI-1:D + ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** What is the VESA(TM) Coordinated Video Timings (CVT)? @@ -132,5 +147,5 @@ There may be more modes. tridentfb - Trident (Cyber)blade chipset frame buffer vt8623fb - VIA 8623 frame buffer -BTW, only a few drivers use this at the moment. Others are to follow -(feel free to send patches). +BTW, only a few fb drivers use this at the moment. Others are to follow +(feel free to send patches). The DRM drivers also support this. |