2 * (C) Copyright 2008-2009
3 * BuS Elektronik GmbH & Co. KG <www.bus-elektronik.de>
4 * Jens Scharsig <esw@bus-elektronik.de>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 U-Boot vcxk video controller driver
26 ======================================
28 By defining CONFIG_VIDEO_VCXK this driver can be used with VC2K, VC4K and
29 VC8K devices on following boards:
32 -----------------------------------------------------------------------
33 EB+CPU5282-T1 | MCF5282 | BuS Elektronik GmbH & Co. KG
34 EB+MCF-EVB123 | MCF5282 | BuS Elektronik GmbH & Co. KG
35 EB+CPUx9K2 | AT91RM9200 | BuS Elektronik GmbH & Co. KG
36 ZLSA | AT91RM9200 | Ruf Telematik AG
41 The driver needs some defines to describe the target hardware:
45 base address of VCxK hardware memory
47 CONFIG_SYS_VCXK_DEFAULT_LINEALIGN
49 defines the physical alignment of a pixel row
51 CONFIG_SYS_VCXK_DOUBLEBUFFERED
53 some boards that use vcxk prevent read from framebuffer memory.
54 define this option to enable double buffering (needs 16KiB RAM)
56 CONFIG_SYS_VCXK_<xxxx>_PIN
58 defines the number of the I/O line PIN in the port
59 valid values for <xxxx> are:
62 describes the acknowledge line from vcxk hardware
65 describes the enable line to vcxk hardware
68 describes the invert line to vcxk hardware
71 describes the reset line to vcxk hardware
74 describes the request line to vcxk hardware
76 CONFIG_SYS_VCXK_<xxxx>_PORT
78 defines the I/O port which is connected with the line
79 for valid values for <xxxx> see CONFIG_SYS_VCXK_<xxxx>_PIN
81 CONFIG_SYS_VCXK_<xxxx>_DDR
83 defines the register which configures the direction
84 for valid values for <xxxx> see CONFIG_SYS_VCXK_<xxxx>_PIN