mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-27 15:12:21 +00:00
84 lines
2.5 KiB
Text
84 lines
2.5 KiB
Text
/*
|
|
* (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
|