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Diffstat (limited to 'doc/README.bus_vcxk')
| -rw-r--r-- | doc/README.bus_vcxk | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/doc/README.bus_vcxk b/doc/README.bus_vcxk new file mode 100644 index 0000000..4eb8fe8 --- /dev/null +++ b/doc/README.bus_vcxk @@ -0,0 +1,85 @@ +/* + * (C) Copyright 2008-2009 + * BuS Elektronik GmbH & Co. KG <www.bus-elektronik.de> + * Jens Scharsig <esw@bus-elektronik.de> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +U-Boot vcxk video controller driver +====================================== + +By defining CONFIG_VIDEO_VCXK this driver can be used with VC2K, VC4K and +VC8K devices on following boards: + +board | ARCH | Vendor +----------------------------------------------------------------------- +EB+CPU5282-T1 | MCF5282 | BuS Elektronik GmbH & Co. KG +EB+MCF-EVB123 | MCF5282 | BuS Elektronik GmbH & Co. KG +EB+CPUx9K2 | AT91RM9200 | BuS Elektronik GmbH & Co. KG +ZLSA | AT91RM9200 | Ruf Telematik AG + +Driver configuration +-------------------- + +The driver needs some defines to describe the target hardware: + +CONFIG_SYS_VCXK_BASE + + base address of VCxK hardware memory + +CONFIG_SYS_VCXK_DEFAULT_LINEALIGN + + defines the physical alignment of a pixel row + +CONFIG_SYS_VCXK_DOUBLEBUFFERED + + some boards that use vcxk prevent read from framebuffer memory. + define this option to enable double buffering (needs 16KiB RAM) + +CONFIG_SYS_VCXK_<xxxx>_PIN + + defines the number of the I/O line PIN in the port + valid values for <xxxx> are: + + ACKNOWLEDGE + describes the acknowledge line from vcxk hardware + + ENABLE + describes the enable line to vcxk hardware + + INVERT + describes the invert line to vcxk hardware + + RESET + describes the reset line to vcxk hardware + + REQUEST + describes the request line to vcxk hardware + +CONFIG_SYS_VCXK_<xxxx>_PORT + + defines the I/O port which is connected with the line + for valid values for <xxxx> see CONFIG_SYS_VCXK_<xxxx>_PIN + +CONFIG_SYS_VCXK_<xxxx>_DDR + + defines the register which configures the direction + for valid values for <xxxx> see CONFIG_SYS_VCXK_<xxxx>_PIN + |