| wdenk | 5b1d713 | 2002-11-03 00:07:02 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2000 |
| 3 | * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | U-Boot MPC8xx video controller driver |
| 25 | ====================================== |
| 26 | |
| 27 | The driver has been tested with the following configurations: |
| 28 | |
| Wolfgang Denk | a1be476 | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 29 | - MPC823FADS with AD7176 on a PAL TV (YCbYCr) - arsenio@tin.it |
| wdenk | 5b1d713 | 2002-11-03 00:07:02 +0000 | [diff] [blame] | 30 | - GENIETV with AD7177 on a PAL TV (YCbYCr) - arsenio@tin.it |
| Timur Tabi | 5576092 | 2011-03-21 16:38:49 -0500 | [diff] [blame] | 31 | |
| 32 | |
| 33 | "video-mode" environment variable |
| 34 | =============================== |
| 35 | |
| 36 | The 'video-mode' environment variable can be used to enable and configure |
| 37 | some video drivers. The format matches the video= command-line option used |
| 38 | for Linux: |
| 39 | |
| 40 | video-mode=<driver>:<xres>x<yres>-<depth>@<freq><,option=string> |
| 41 | |
| 42 | <driver> The video driver name, ignored by U-Boot |
| 43 | <xres> The X resolution (in pixels) to use. |
| 44 | <yres> The Y resolution (in pixels) to use. |
| 45 | <depth> The color depth (in bits) to use. |
| 46 | <freq> The frequency (in Hz) to use. |
| 47 | <options> A comma-separated list of device-specific options |
| 48 | |
| 49 | Example: video-mode=fslfb:1280x1024-32@60,monitor=dvi |