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-rw-r--r--Documentation/arm/Samsung-S3C24XX/EB2410ITX.txt58
-rw-r--r--Documentation/arm/Samsung-S3C24XX/GPIO.txt122
-rw-r--r--Documentation/arm/Samsung-S3C24XX/H1940.txt40
-rw-r--r--Documentation/arm/Samsung-S3C24XX/Overview.txt156
-rw-r--r--Documentation/arm/Samsung-S3C24XX/SMDK2440.txt56
-rw-r--r--Documentation/arm/Samsung-S3C24XX/Suspend.txt106
6 files changed, 538 insertions, 0 deletions
diff --git a/Documentation/arm/Samsung-S3C24XX/EB2410ITX.txt b/Documentation/arm/Samsung-S3C24XX/EB2410ITX.txt
new file mode 100644
index 000000000000..000e3d7a78b2
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/EB2410ITX.txt
@@ -0,0 +1,58 @@
+ Simtec Electronics EB2410ITX (BAST)
+ ===================================
+
+ http://www.simtec.co.uk/products/EB2410ITX/
+
+Introduction
+------------
+
+ The EB2410ITX is a S3C2410 based development board with a variety of
+ peripherals and expansion connectors. This board is also known by
+ the shortened name of Bast.
+
+
+Configuration
+-------------
+
+ To set the default configuration, use `make bast_defconfig` which
+ supports the commonly used features of this board.
+
+
+Support
+-------
+
+ Official support information can be found on the Simtec Electronics
+ website, at the product page http://www.simtec.co.uk/products/EB2410ITX/
+
+ Useful links:
+
+ - Resources Page http://www.simtec.co.uk/products/EB2410ITX/resources.html
+
+ - Board FAQ at http://www.simtec.co.uk/products/EB2410ITX/faq.html
+
+ - Bootloader info http://www.simtec.co.uk/products/SWABLE/resources.html
+ and FAQ http://www.simtec.co.uk/products/SWABLE/faq.html
+
+
+MTD
+---
+
+ The NAND and NOR support has been merged from the linux-mtd project.
+ Any prolbems, see http://www.linux-mtd.infradead.org/ for more
+ information or up-to-date versions of linux-mtd.
+
+
+IDE
+---
+
+ Both onboard IDE ports are supported, however there is no support for
+ changing speed of devices, PIO Mode 4 capable drives should be used.
+
+
+Maintainers
+-----------
+
+ This board is maintained by Simtec Electronics.
+
+
+(c) 2004 Ben Dooks, Simtec Electronics
diff --git a/Documentation/arm/Samsung-S3C24XX/GPIO.txt b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
new file mode 100644
index 000000000000..0822764ec270
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
@@ -0,0 +1,122 @@
+ S3C2410 GPIO Control
+ ====================
+
+Introduction
+------------
+
+ The s3c2410 kernel provides an interface to configure and
+ manipulate the state of the GPIO pins, and find out other
+ information about them.
+
+ There are a number of conditions attached to the configuration
+ of the s3c2410 GPIO system, please read the Samsung provided
+ data-sheet/users manual to find out the complete list.
+
+
+Headers
+-------
+
+ See include/asm-arm/arch-s3c2410/regs-gpio.h for the list
+ of GPIO pins, and the configuration values for them. This
+ is included by using #include <asm/arch/regs-gpio.h>
+
+ The GPIO management functions are defined in the hardware
+ header include/asm-arm/arch-s3c2410/hardware.h which can be
+ included by #include <asm/arch/hardware.h>
+
+ A useful ammount of documentation can be found in the hardware
+ header on how the GPIO functions (and others) work.
+
+ Whilst a number of these functions do make some checks on what
+ is passed to them, for speed of use, they may not always ensure
+ that the user supplied data to them is correct.
+
+
+PIN Numbers
+-----------
+
+ Each pin has an unique number associated with it in regs-gpio.h,
+ eg S3C2410_GPA0 or S3C2410_GPF1. These defines are used to tell
+ the GPIO functions which pin is to be used.
+
+
+Configuring a pin
+-----------------
+
+ The following function allows the configuration of a given pin to
+ be changed.
+
+ void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
+
+ Eg:
+
+ s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0);
+ s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
+
+ which would turn GPA0 into the lowest Address line A0, and set
+ GPE8 to be connected to the SDIO/MMC controller's SDDAT1 line.
+
+
+Reading the current configuration
+---------------------------------
+
+ The current configuration of a pin can be read by using:
+
+ s3c2410_gpio_getcfg(unsigned int pin);
+
+ The return value will be from the same set of values which can be
+ passed to s3c2410_gpio_cfgpin().
+
+
+Configuring a pull-up resistor
+------------------------------
+
+ A large proportion of the GPIO pins on the S3C2410 can have weak
+ pull-up resistors enabled. This can be configured by the following
+ function:
+
+ void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
+
+ Where the to value is zero to set the pull-up off, and 1 to enable
+ the specified pull-up. Any other values are currently undefined.
+
+
+Getting the state of a PIN
+--------------------------
+
+ The state of a pin can be read by using the function:
+
+ unsigned int s3c2410_gpio_getpin(unsigned int pin);
+
+ This will return either zero or non-zero. Do not count on this
+ function returning 1 if the pin is set.
+
+
+Setting the state of a PIN
+--------------------------
+
+ The value an pin is outputing can be modified by using the following:
+
+ void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
+
+ Which sets the given pin to the value. Use 0 to write 0, and 1 to
+ set the output to 1.
+
+
+Getting the IRQ number associated with a PIN
+--------------------------------------------
+
+ The following function can map the given pin number to an IRQ
+ number to pass to the IRQ system.
+
+ int s3c2410_gpio_getirq(unsigned int pin);
+
+ Note, not all pins have an IRQ.
+
+
+Authour
+-------
+
+
+Ben Dooks, 03 October 2004
+(c) 2004 Ben Dooks, Simtec Electronics
diff --git a/Documentation/arm/Samsung-S3C24XX/H1940.txt b/Documentation/arm/Samsung-S3C24XX/H1940.txt
new file mode 100644
index 000000000000..d6b1de92b111
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/H1940.txt
@@ -0,0 +1,40 @@
+ HP IPAQ H1940
+ =============
+
+http://www.handhelds.org/projects/h1940.html
+
+Introduction
+------------
+
+ The HP H1940 is a S3C2410 based handheld device, with
+ bluetooth connectivity.
+
+
+Support
+-------
+
+ A variety of information is available
+
+ handhelds.org project page:
+
+ http://www.handhelds.org/projects/h1940.html
+
+ handhelds.org wiki page:
+
+ http://handhelds.org/moin/moin.cgi/HpIpaqH1940
+
+ Herbert P÷tzl pages:
+
+ http://vserver.13thfloor.at/H1940/
+
+
+Maintainers
+-----------
+
+ This project is being maintained and developed by a variety
+ of people, including Ben Dooks, Arnaud Patard, and Herbert P÷tzl.
+
+ Thanks to the many others who have also provided support.
+
+
+(c) 2005 Ben Dooks \ No newline at end of file
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
new file mode 100644
index 000000000000..3af4d29a8938
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt
@@ -0,0 +1,156 @@
+ S3C24XX ARM Linux Overview
+ ==========================
+
+
+
+Introduction
+------------
+
+ The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
+ by the 's3c2410' architecture of ARM Linux. Currently the S3C2410 and
+ the S3C2440 are supported CPUs.
+
+
+Configuration
+-------------
+
+ A generic S3C2410 configuration is provided, and can be used as the
+ default by `make s3c2410_defconfig`. This configuration has support
+ for all the machines, and the commonly used features on them.
+
+ Certain machines may have their own default configurations as well,
+ please check the machine specific documentation.
+
+
+Machines
+--------
+
+ The currently supported machines are as follows:
+
+ Simtec Electronics EB2410ITX (BAST)
+
+ A general purpose development board, see EB2410ITX.txt for further
+ details
+
+ Samsung SMDK2410
+
+ Samsung's own development board, geared for PDA work.
+
+ Samsung/Meritech SMDK2440
+
+ The S3C2440 compatible version of the SMDK2440
+
+ Thorcom VR1000
+
+ Custom embedded board
+
+ HP IPAQ 1940
+
+ Handheld (IPAQ), available in several varieties
+
+ HP iPAQ rx3715
+
+ S3C2440 based IPAQ, with a number of variations depending on
+ features shipped.
+
+ Acer N30
+
+ A S3C2410 based PDA from Acer. There is a Wiki page at
+ http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
+
+
+Adding New Machines
+-------------------
+
+ The archicture 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.
+
+ Machine definitions should be kept in linux/arch/arm/mach-s3c2410,
+ and there are a number of examples that can be looked at.
+
+ Read the kernel patch submission policies as well as the
+ Documentation/arm directory before submitting patches. The
+ ARM kernel series is managed by Russell King, and has a patch system
+ located at http://www.arm.linux.org.uk/developer/patches/
+ as well as mailing lists that can be found from the same site.
+
+ As a courtesy, please notify <ben-linux@fluff.org> of any new
+ machines or other modifications.
+
+ Any large scale modifications, or new drivers should be discussed
+ on the ARM kernel mailing list (linux-arm-kernel) before being
+ attempted.
+
+
+NAND
+----
+
+ 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/
+
+
+Serial
+------
+
+ The s3c2410 serial driver provides support for the internal
+ serial ports. These devices appear as /dev/ttySAC0 through 3.
+
+ To create device nodes for these, use the following commands
+
+ mknod ttySAC0 c 204 64
+ mknod ttySAC1 c 204 65
+ mknod ttySAC2 c 204 66
+
+
+GPIO
+----
+
+ The core contains support for manipulating the GPIO, see the
+ documentation in GPIO.txt in the same directory as this file.
+
+
+Clock Management
+----------------
+
+ The core provides the interface defined in the header file
+ include/asm-arm/hardware/clock.h, to allow control over the
+ various clock units
+
+
+Port Contributors
+-----------------
+
+ Ben Dooks (BJD)
+ Vincent Sanders
+ Herbert Potzl
+ Arnaud Patard (RTP)
+ Roc Wu
+ Klaus Fetscher
+ Dimitry Andric
+ Shannon Holland
+ Guillaume Gourat (NexVision)
+ Christer Weinigel (wingel) (Acer N30)
+ Lucas Correia Villa Real (S3C2400 port)
+
+
+Document Changes
+----------------
+
+ 05 Sep 2004 - BJD - Added Document Changes section
+ 05 Sep 2004 - BJD - Added Klaus Fetscher to list of contributors
+ 25 Oct 2004 - BJD - Added Dimitry Andric to list of contributors
+ 25 Oct 2004 - BJD - Updated the MTD from the 2.6.9 merge
+ 21 Jan 2005 - BJD - Added rx3715, added Shannon to contributors
+ 10 Feb 2005 - BJD - Added Guillaume Gourat to contributors
+ 02 Mar 2005 - BJD - Added SMDK2440 to list of machines
+ 06 Mar 2005 - BJD - Added Christer Weinigel
+ 08 Mar 2005 - BJD - Added LCVR to list of people, updated introduction
+ 08 Mar 2005 - BJD - Added section on adding machines
+
+Document Author
+---------------
+
+Ben Dooks, (c) 2004-2005 Simtec Electronics
diff --git a/Documentation/arm/Samsung-S3C24XX/SMDK2440.txt b/Documentation/arm/Samsung-S3C24XX/SMDK2440.txt
new file mode 100644
index 000000000000..32e1eae6a25f
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/SMDK2440.txt
@@ -0,0 +1,56 @@
+ Samsung/Meritech SMDK2440
+ =========================
+
+Introduction
+------------
+
+ The SMDK2440 is a two part evaluation board for the Samsung S3C2440
+ processor. It includes support for LCD, SmartMedia, Audio, SD and
+ 10MBit Ethernet, and expansion headers for various signals, including
+ the camera and unused GPIO.
+
+
+Configuration
+-------------
+
+ To set the default configuration, use `make smdk2440_defconfig` which
+ will configure the common features of this board, or use
+ `make s3c2410_config` to include support for all s3c2410/s3c2440 machines
+
+
+Support
+-------
+
+ Ben Dooks' SMDK2440 site at http://www.fluff.org/ben/smdk2440/ which
+ includes linux based USB download tools.
+
+ Some of the h1940 patches that can be found from the H1940 project
+ site at http://www.handhelds.org/projects/h1940.html can also be
+ applied to this board.
+
+
+Peripherals
+-----------
+
+ There is no current support for any of the extra peripherals on the
+ base-board itself.
+
+
+MTD
+---
+
+ The NAND flash should be supported by the in kernel MTD NAND support,
+ NOR flash will be added later.
+
+
+Maintainers
+-----------
+
+ This board is being maintained by Ben Dooks, for more info, see
+ http://www.fluff.org/ben/smdk2440/
+
+ Many thanks to Dimitry Andric of TomTom for the loan of the SMDK2440,
+ and to Simtec Electronics for allowing me time to work on this.
+
+
+(c) 2004 Ben Dooks \ No newline at end of file
diff --git a/Documentation/arm/Samsung-S3C24XX/Suspend.txt b/Documentation/arm/Samsung-S3C24XX/Suspend.txt
new file mode 100644
index 000000000000..e12bc3284a27
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/Suspend.txt
@@ -0,0 +1,106 @@
+ S3C24XX Suspend Support
+ =======================
+
+
+Introduction
+------------
+
+ The S3C2410 supports a low-power suspend mode, where the SDRAM is kept
+ in Self-Refresh mode, and all but the essential peripheral blocks are
+ powered down. For more information on how this works, please look
+ at the S3C2410 datasheets from Samsung.
+
+
+Requirements
+------------
+
+ 1) A bootloader that can support the necessary resume operation
+
+ 2) Support for at least 1 source for resume
+
+ 3) CONFIG_PM enabled in the kernel
+
+ 4) Any peripherals that are going to be powered down at the same
+ time require suspend/resume support.
+
+
+Resuming
+--------
+
+ The S3C2410 user manual defines the process of sending the CPU to
+ sleep and how it resumes. The default behaviour of the Linux code
+ is to set the GSTATUS3 register to the physical address of the
+ code to resume Linux operation.
+
+ GSTATUS4 is currently left alone by the sleep code, and is free to
+ use for any other purposes (for example, the EB2410ITX uses this to
+ save memory configuration in).
+
+
+Machine Support
+---------------
+
+ The machine specific functions must call the s3c2410_pm_init() function
+ to say that its bootloader is capable of resuming. This can be as
+ simple as adding the following to the machine's definition:
+
+ INITMACHINE(s3c2410_pm_init)
+
+ A board can do its own setup before calling s3c2410_pm_init, if it
+ needs to setup anything else for power management support.
+
+ There is currently no support for over-riding the default method of
+ saving the resume address, if your board requires it, then contact
+ the maintainer and discuss what is required.
+
+ Note, the original method of adding an late_initcall() is wrong,
+ and will end up initialising all compiled machines' pm init!
+
+
+Debugging
+---------
+
+ There are several important things to remember when using PM suspend:
+
+ 1) The uart drivers will disable the clocks to the UART blocks when
+ suspending, which means that use of printascii() or similar direct
+ access to the UARTs will cause the debug to stop.
+
+ 2) Whilst the pm code itself will attempt to re-enable the UART clocks,
+ care should be taken that any external clock sources that the UARTs
+ rely on are still enabled at that point.
+
+
+Configuration
+-------------
+
+ The S3C2410 specific configuration in `System Type` defines various
+ aspects of how the S3C2410 suspend and resume support is configured
+
+ `S3C2410 PM Suspend debug`
+
+ This option prints messages to the serial console before and after
+ the actual suspend, giving detailed information on what is
+ happening
+
+
+ `S3C2410 PM Suspend Memory CRC`
+
+ Allows the entire memory to be checksummed before and after the
+ suspend to see if there has been any corruption of the contents.
+
+ This support requires the CRC32 function to be enabled.
+
+
+ `S3C2410 PM Suspend CRC Chunksize (KiB)`
+
+ Defines the size of memory each CRC chunk covers. A smaller value
+ will mean that the CRC data block will take more memory, but will
+ identify any faults with better precision
+
+
+Document Author
+---------------
+
+Ben Dooks, (c) 2004 Simtec Electronics
+