Documentation/fb/modedb.rst

9   - one routine to probe for video modes, which can be used by all frame buffer
11   - one generic video mode database with a fair amount of standard videomodes
13   - the possibility to supply your own mode database for graphics hardware that
14     needs non-standard modes, like amifb and Mac frame buffer drivers (which
23     <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
24     <name>[-<bpp>][@<refresh>]
31   - NSTC: 480i output, with the CCIR System-M TV mode and NTSC color encoding
32   - NTSC-J: 480i output, with the CCIR System-M TV mode, the NTSC color
34   - PAL: 576i output, with the CCIR System-B TV mode and PAL color encoding
35   - PAL-M: 480i output, with the CCIR System-M TV mode and PAL color encoding
38 <bpp> and <refresh>, if specified) the timings will be calculated using
39 VESA(TM) Coordinated Video Timings instead of looking up the mode from a table.
45        Sample usage: 1024x768M@60m - CVT timing with margins
49 'e' will force the display to be enabled, i.e. it will override the detection
50 if a display is connected. 'D' will force the display to be enabled and use
52 signals (e.g. HDMI and DVI-I). For other outputs it behaves like 'e'. If 'd'
58     video=VGA-1:1280x1024@60me
62     video=LVDS-1:d video=HDMI-1:D
66        Sample usage: 720x480,rotate=180 - 720x480 mode, rotated by 180 degrees
70   - margin_top, margin_bottom, margin_left, margin_right (integer):
72   - reflect_x (boolean): Perform an axial symmetry on the X axis
73   - reflect_y (boolean): Perform an axial symmetry on the Y axis
74   - rotate (integer): Rotate the initial framebuffer by x
76   - tv_mode: Analog TV mode. One of "NTSC", "NTSC-443", "NTSC-J", "PAL",
77     "PAL-M", "PAL-N", or "SECAM".
78   - panel_orientation, one of "normal", "upside_down", "left_side_up", or
83 -----------------------------------------------------------------------------
85 What is the VESA(TM) Coordinated Video Timings (CVT)?
91       and coordinated set of standard formats, display refresh rates, and
92       timing specifications for computer display products, both those
93       employing CRTs, and those using other display technologies. The
94       intention of CVT is to give both source and display manufacturers a
95       common set of tools to enable new timings to be developed in a
98 This is the third standard approved by VESA(TM) concerning video timings.  The
99 first was the Discrete Video Timings (DVT) which is  a collection of
100 pre-defined modes approved by VESA(TM).  The second is the Generalized Timing
101 Formula (GTF) which is an algorithm to calculate the timings, given the
106 requirement. This is inappropriate for digital display interface with its high
108 Also, GTF does not take into account the aspect ratio of the display.
115 to the global mode database whenever a new mode is released by display
118 calculation is specified.  (The CVT compatibility of the display can be
119 determined from its EDID. The version 1.3 of the EDID has extra 128-byte
125     <pix>M<a>[-R]
129 	   a   = aspect ratio (3 - 4:3; 4 - 5:4; 9 - 15:9, 16:9; A - 16:10)
130 	  -R   = reduced blanking
132 	  example:  .48M3-R - 800x600 with reduced blanking
136       - aspect ratio can only be one of the above values
137       - acceptable refresh rates are 50, 60, 70 or 85 Hz only
138       - if reduced blanking, the refresh rate must be at 60Hz
141 timings will still be calculated.
143 -----------------------------------------------------------------------------
153 with db/dbsize your non-standard video mode database, or NULL to use the
162     video=<driver>:<xres>x<yres>[-<bpp>][@refresh]
171     amifb	- Amiga chipset frame buffer
172     aty128fb	- ATI Rage128 / Pro frame buffer
173     atyfb	- ATI Mach64 frame buffer
174     pm2fb	- Permedia 2/2V frame buffer
175     pm3fb	- Permedia 3 frame buffer
176     sstfb	- Voodoo 1/2 (SST1) chipset frame buffer
177     tdfxfb	- 3D Fx frame buffer
178     tridentfb	- Trident (Cyber)blade chipset frame buffer
179     vt8623fb	- VIA 8623 frame buffer