From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- qemu/roms/u-boot/doc/README.bus_vcxk | 68 ++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 qemu/roms/u-boot/doc/README.bus_vcxk (limited to 'qemu/roms/u-boot/doc/README.bus_vcxk') diff --git a/qemu/roms/u-boot/doc/README.bus_vcxk b/qemu/roms/u-boot/doc/README.bus_vcxk new file mode 100644 index 000000000..5bd3c652a --- /dev/null +++ b/qemu/roms/u-boot/doc/README.bus_vcxk @@ -0,0 +1,68 @@ +/* + * (C) Copyright 2008-2009 + * BuS Elektronik GmbH & Co. KG + * Jens Scharsig + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +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__PIN + + defines the number of the I/O line PIN in the port + valid values for 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__PORT + + defines the I/O port which is connected with the line + for valid values for see CONFIG_SYS_VCXK__PIN + +CONFIG_SYS_VCXK__DDR + + defines the register which configures the direction + for valid values for see CONFIG_SYS_VCXK__PIN -- cgit 1.2.3-korg