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- SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2008-2009
- * BuS Elektronik GmbH & Co. KG <www.bus-elektronik.de>
- * Jens Scharsig <esw@bus-elektronik.de>
- */
- 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
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