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-rw-r--r--Documentation/arm/Samsung-S3C24XX/GPIO.txt15
-rw-r--r--Documentation/arm/Samsung-S3C24XX/Overview.txt35
2 files changed, 48 insertions, 2 deletions
diff --git a/Documentation/arm/Samsung-S3C24XX/GPIO.txt b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
index b5d20c0b2ab..ea7ccfc4b27 100644
--- a/Documentation/arm/Samsung-S3C24XX/GPIO.txt
+++ b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
@@ -13,6 +13,21 @@ Introduction
data-sheet/users manual to find out the complete list.
+GPIOLIB
+-------
+
+ With the event of the GPIOLIB in drivers/gpio, support for some
+ of the GPIO functions such as reading and writing a pin will
+ be removed in favour of this common access method.
+
+ Once all the extant drivers have been converted, the functions
+ listed below will be removed (they may be marked as __deprecated
+ in the near future).
+
+ - s3c2410_gpio_getpin
+ - s3c2410_gpio_setpin
+
+
Headers
-------
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
index 014a8ec4877..cff6227b448 100644
--- a/Documentation/arm/Samsung-S3C24XX/Overview.txt
+++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt
@@ -8,9 +8,10 @@ Introduction
The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
by the 's3c2410' architecture of ARM Linux. Currently the S3C2410,
- S3C2412, S3C2413, S3C2440 and S3C2442 devices are supported.
+ S3C2412, S3C2413, S3C2440, S3C2442 and S3C2443 devices are supported.
+
+ Support for the S3C2400 and S3C24A0 series are in progress.
- Support for the S3C2400 series is in progress.
Configuration
-------------
@@ -38,6 +39,22 @@ Layout
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
--------
@@ -159,6 +176,17 @@ NAND
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
------
@@ -178,6 +206,9 @@ GPIO
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
----------------