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https://github.com/AsahiLinux/u-boot
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a5dbdc81ea
Add function video_get_video_mode(), which parses the "video-mode" environment variable and returns each of its components. The format matches the video= command-line option used for Linux: video-mode=<driver>:<xres>x<yres>-<depth>@<freq><,option=string> <driver> The video driver, ignored by U-Boot <xres> The X resolution (in pixels) to use. <yres> The Y resolution (in pixels) to use. <depth> The color depth (in bits) to use. <freq> The frequency (in Hz) to use. <options> A comma-separated list of device-specific options Signed-off-by: Timur Tabi <timur@freescale.com>
49 lines
1.8 KiB
Text
49 lines
1.8 KiB
Text
/*
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* (C) Copyright 2000
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* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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U-Boot MPC8xx video controller driver
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======================================
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The driver has been tested with the following configurations:
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- MPC823FADS with AD7176 on a PAL TV (YCbYCr) - arsenio@tin.it
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- GENIETV with AD7177 on a PAL TV (YCbYCr) - arsenio@tin.it
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"video-mode" environment variable
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===============================
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The 'video-mode' environment variable can be used to enable and configure
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some video drivers. The format matches the video= command-line option used
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for Linux:
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video-mode=<driver>:<xres>x<yres>-<depth>@<freq><,option=string>
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<driver> The video driver name, ignored by U-Boot
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<xres> The X resolution (in pixels) to use.
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<yres> The Y resolution (in pixels) to use.
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<depth> The color depth (in bits) to use.
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<freq> The frequency (in Hz) to use.
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<options> A comma-separated list of device-specific options
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Example: video-mode=fslfb:1280x1024-32@60,monitor=dvi
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