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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 b5d20c0b2ab4..ea7ccfc4b274 100644
--- a/Documentation/arm/Samsung-S3C24XX/GPIO.txt
+++ b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
@@ -13,6 +13,21 @@ Introduction
13 data-sheet/users manual to find out the complete list. 13 data-sheet/users manual to find out the complete list.
14 14
15 15
16GPIOLIB
17-------
18
19 With the event of the GPIOLIB in drivers/gpio, support for some
20 of the GPIO functions such as reading and writing a pin will
21 be removed in favour of this common access method.
22
23 Once all the extant drivers have been converted, the functions
24 listed below will be removed (they may be marked as __deprecated
25 in the near future).
26
27 - s3c2410_gpio_getpin
28 - s3c2410_gpio_setpin
29
30
16Headers 31Headers
17------- 32-------
18 33
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
index 014a8ec4877d..cff6227b4484 100644
--- a/Documentation/arm/Samsung-S3C24XX/Overview.txt
+++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt
@@ -8,9 +8,10 @@ Introduction
8 8
9 The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported 9 The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
10 by the 's3c2410' architecture of ARM Linux. Currently the S3C2410, 10 by the 's3c2410' architecture of ARM Linux. Currently the S3C2410,
11 S3C2412, S3C2413, S3C2440 and S3C2442 devices are supported. 11 S3C2412, S3C2413, S3C2440, S3C2442 and S3C2443 devices are supported.
12
13 Support for the S3C2400 and S3C24A0 series are in progress.
12 14
13 Support for the S3C2400 series is in progress.
14 15
15Configuration 16Configuration
16------------- 17-------------
@@ -38,6 +39,22 @@ Layout
38 Register, kernel and platform data definitions are held in the 39 Register, kernel and platform data definitions are held in the
39 arch/arm/mach-s3c2410 directory./include/mach 40 arch/arm/mach-s3c2410 directory./include/mach
40 41
42arch/arm/plat-s3c24xx:
43
44 Files in here are either common to all the s3c24xx family,
45 or are common to only some of them with names to indicate this
46 status. The files that are not common to all are generally named
47 with the initial cpu they support in the series to ensure a short
48 name without any possibility of confusion with newer devices.
49
50 As an example, initially s3c244x would cover s3c2440 and s3c2442, but
51 with the s3c2443 which does not share many of the same drivers in
52 this directory, the name becomes invalid. We stick to s3c2440-<x>
53 to indicate a driver that is s3c2440 and s3c2442 compatible.
54
55 This does mean that to find the status of any given SoC, a number
56 of directories may need to be searched.
57
41 58
42Machines 59Machines
43-------- 60--------
@@ -159,6 +176,17 @@ NAND
159 For more information see Documentation/arm/Samsung-S3C24XX/NAND.txt 176 For more information see Documentation/arm/Samsung-S3C24XX/NAND.txt
160 177
161 178
179SD/MMC
180------
181
182 The SD/MMC hardware pre S3C2443 is supported in the current
183 kernel, the driver is drivers/mmc/host/s3cmci.c and supports
184 1 and 4 bit SD or MMC cards.
185
186 The SDIO behaviour of this driver has not been fully tested. There is no
187 current support for hardware SDIO interrupts.
188
189
162Serial 190Serial
163------ 191------
164 192
@@ -178,6 +206,9 @@ GPIO
178 The core contains support for manipulating the GPIO, see the 206 The core contains support for manipulating the GPIO, see the
179 documentation in GPIO.txt in the same directory as this file. 207 documentation in GPIO.txt in the same directory as this file.
180 208
209 Newer kernels carry GPIOLIB, and support is being moved towards
210 this with some of the older support in line to be removed.
211
181 212
182Clock Management 213Clock Management
183---------------- 214----------------