Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[linux-2.6-omap-h63xx.git] / Documentation / arm / Samsung-S3C24XX / Overview.txt

diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
index d04e1e30c47f8ff1a8613a369506e58cf5a41a21..cff6227b44844dae251e4425468c3c099f58d272 100644 (file)
--- 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,
 
   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
 -------------
 
 Configuration
 -------------


@@ -36,7 +37,23 @@ Layout
   in arch/arm/mach-s3c2410 and S3C2440 in arch/arm/mach-s3c2440
 
   Register, kernel and platform data definitions are held in the
   in arch/arm/mach-s3c2410 and S3C2440 in arch/arm/mach-s3c2440
 
   Register, kernel and platform data definitions are held in the

-  include/asm-arm/arch-s3c2410 directory.
+  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
 
 
 Machines


@@ -159,6 +176,17 @@ NAND
   For more information see Documentation/arm/Samsung-S3C24XX/NAND.txt
 
 
   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
 ------
 
 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.
 
   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
 ----------------
 
 Clock Management
 ----------------