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https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
67 lines
1.8 KiB
Text
67 lines
1.8 KiB
Text
SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2008-2009
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* BuS Elektronik GmbH & Co. KG <www.bus-elektronik.de>
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* Jens Scharsig <esw@bus-elektronik.de>
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*/
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U-Boot vcxk video controller driver
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======================================
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By defining CONFIG_VIDEO_VCXK this driver can be used with VC2K, VC4K and
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VC8K devices on following boards:
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board | ARCH | Vendor
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-----------------------------------------------------------------------
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EB+CPU5282-T1 | MCF5282 | BuS Elektronik GmbH & Co. KG
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EB+MCF-EVB123 | MCF5282 | BuS Elektronik GmbH & Co. KG
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EB+CPUx9K2 | AT91RM9200 | BuS Elektronik GmbH & Co. KG
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ZLSA | AT91RM9200 | Ruf Telematik AG
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Driver configuration
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--------------------
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The driver needs some defines to describe the target hardware:
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CONFIG_SYS_VCXK_BASE
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base address of VCxK hardware memory
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CONFIG_SYS_VCXK_DEFAULT_LINEALIGN
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defines the physical alignment of a pixel row
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CONFIG_SYS_VCXK_DOUBLEBUFFERED
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some boards that use vcxk prevent read from framebuffer memory.
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define this option to enable double buffering (needs 16KiB RAM)
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CONFIG_SYS_VCXK_<xxxx>_PIN
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defines the number of the I/O line PIN in the port
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valid values for <xxxx> are:
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ACKNOWLEDGE
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describes the acknowledge line from vcxk hardware
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ENABLE
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describes the enable line to vcxk hardware
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INVERT
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describes the invert line to vcxk hardware
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RESET
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describes the reset line to vcxk hardware
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REQUEST
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describes the request line to vcxk hardware
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CONFIG_SYS_VCXK_<xxxx>_PORT
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defines the I/O port which is connected with the line
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for valid values for <xxxx> see CONFIG_SYS_VCXK_<xxxx>_PIN
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CONFIG_SYS_VCXK_<xxxx>_DDR
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defines the register which configures the direction
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for valid values for <xxxx> see CONFIG_SYS_VCXK_<xxxx>_PIN
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