Documentation/fb/viafb.modes

Source file repositories/reference/linux-study-clean/Documentation/fb/viafb.modes

File Facts

System
Linux kernel
Corpus path
Documentation/fb/viafb.modes
Extension
.modes
Size
31543 bytes
Lines
871
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#
#
#   These data are based on the CRTC parameters in
#
#       VIA Integration Graphics Chip
#       (C) 2004 VIA Technologies Inc.
#

#
#   640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock)
#
#               Horizontal  Vertical
#   Resolution      640     480
#   Scan Frequency      31.469 kHz  59.94 Hz
#   Sync Width      3.813 us    0.064 ms
#               12 chars    2 lines
#   Front Porch     0.636 us    0.318  ms
#               2 chars     10 lines
#   Back Porch      1.907 us    1.048  ms
#               6 chars     33 lines
#   Active Time     25.422 us   15.253 ms
#               80 chars    480 lines
#   Blank Time      6.356 us    1.430 ms
#               20 chars    45 lines
#   Polarity        negative    negative
#

mode "640x480-60"
# D: 25.175 MHz, H: 31.469 kHz, V: 59.94 Hz
    geometry 640 480 640 480 32
    timings 39722 48 16 33 10 96 2 endmode mode "480x640-60"
# D: 24.823 MHz, H: 39.780 kHz, V: 60.00 Hz
    geometry 480 640 480 640 32 timings 39722 72 24 19 1 48 3 endmode
#
#   640x480, 75 Hz, Non-Interlaced (31.50 MHz dotclock)
#
#               Horizontal  Vertical
#   Resolution      640     480
#   Scan Frequency      37.500 kHz  75.00 Hz
#   Sync Width      2.032 us    0.080 ms
#               8 chars     3 lines
#   Front Porch     0.508 us    0.027 ms
#               2 chars     1 lines
#   Back Porch      3.810 us    0.427 ms
#               15 chars    16 lines
#   Active Time     20.317 us   12.800 ms
#               80 chars    480 lines
#   Blank Time      6.349 us    0.533 ms
#               25 chars    20 lines
#   Polarity        negative    negative
#
    mode "640x480-75"
# D: 31.50 MHz, H: 37.500 kHz, V: 75.00 Hz
    geometry 640 480 640 480 32 timings 31747 120 16 16 1 64 3 endmode
#
#   640x480, 85 Hz, Non-Interlaced (36.000 MHz dotclock)
#
#               Horizontal  Vertical
#   Resolution      640     480
#   Scan Frequency  43.269 kHz  85.00 Hz
#   Sync Width      1.556 us    0.069 ms
#               7 chars     3 lines
#   Front Porch     1.556 us    0.023 ms
#               7 chars     1 lines
#   Back Porch      2.222 us    0.578 ms
#               10 chars    25 lines
#   Active Time     17.778 us   11.093 ms
#               80 chars    480 lines
#   Blank Time      5.333 us    0.670 ms
#               24 chars    29 lines

Annotation

Implementation Notes