The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
by the 's3c2410' architecture of ARM Linux. Currently the S3C2410,
- S3C2440 and S3C2442 devices are supported.
+ S3C2412, S3C2413, S3C2440, S3C2442 and S3C2443 devices are supported.
- Support for the S3C2400 series is in progress.
-
- Support for the S3C2412 and S3C2413 CPUs is being merged.
+ Support for the S3C2400 and S3C24A0 series are in progress.
Configuration
please check the machine specific documentation.
+Layout
+------
+
+ The core support files are located in the platform code contained in
+ arch/arm/plat-s3c24xx with headers in include/asm-arm/plat-s3c24xx.
+ This directory should be kept to items shared between the platform
+ code (arch/arm/plat-s3c24xx) and the arch/arm/mach-s3c24* code.
+
+ Each cpu has a directory with the support files for it, and the
+ machines that carry the device. For example S3C2410 is contained
+ in arch/arm/mach-s3c2410 and S3C2440 in arch/arm/mach-s3c2440
+
+ Register, kernel and platform data definitions are held in the
+ arch/arm/mach-s3c2410 directory./include/mach
+
+arch/arm/plat-s3c24xx:
+
+ Files in here are either common to all the s3c24xx family,
+ or are common to only some of them with names to indicate this
+ status. The files that are not common to all are generally named
+ with the initial cpu they support in the series to ensure a short
+ name without any possibility of confusion with newer devices.
+
+ As an example, initially s3c244x would cover s3c2440 and s3c2442, but
+ with the s3c2443 which does not share many of the same drivers in
+ this directory, the name becomes invalid. We stick to s3c2440-<x>
+ to indicate a driver that is s3c2440 and s3c2442 compatible.
+
+ This does mean that to find the status of any given SoC, a number
+ of directories may need to be searched.
+
+
Machines
--------
A S3C2410 based PDA from Acer. There is a Wiki page at
http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
+ AML M5900
+
+ American Microsystems' M5900
+
+ Nex Vision Nexcoder
+ Nex Vision Otom
+
+ Two machines by Nex Vision
+
Adding New Machines
-------------------
- The archicture has been designed to support as many machines as can
+ The architecture has been designed to support as many machines as can
be configured for it in one kernel build, and any future additions
should keep this in mind before altering items outside of their own
machine files.
Support for the onboard RTC unit, including alarm function.
+ This has recently been upgraded to use the new RTC core,
+ and the module has been renamed to rtc-s3c to fit in with
+ the new rtc naming scheme.
+
Watchdog
--------
The current kernels now have support for the s3c2410 NAND
controller. If there are any problems the latest linux-mtd
- CVS can be found from http://www.linux-mtd.infradead.org/
+ code can be found from http://www.linux-mtd.infradead.org/
+
+ For more information see Documentation/arm/Samsung-S3C24XX/NAND.txt
+
+
+SD/MMC
+------
+
+ The SD/MMC hardware pre S3C2443 is supported in the current
+ kernel, the driver is drivers/mmc/host/s3cmci.c and supports
+ 1 and 4 bit SD or MMC cards.
+
+ The SDIO behaviour of this driver has not been fully tested. There is no
+ current support for hardware SDIO interrupts.
Serial
The core contains support for manipulating the GPIO, see the
documentation in GPIO.txt in the same directory as this file.
+ Newer kernels carry GPIOLIB, and support is being moved towards
+ this with some of the older support in line to be removed.
+
Clock Management
----------------
See Suspend.txt for more information.
+SPI
+---
+
+ SPI drivers are available for both the in-built hardware
+ (although there is no DMA support yet) and a generic
+ GPIO based solution.
+
+
+LEDs
+----
+
+ There is support for GPIO based LEDs via a platform driver
+ in the LED subsystem.
+
+
Platform Data
-------------
Document Author
---------------
-Ben Dooks, (c) 2004-2005,2006 Simtec Electronics
+Ben Dooks, Copyright 2004-2005,2006 Simtec Electronics
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff