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-rw-r--r--Documentation/arm/Samsung-S3C24XX/GPIO.txt23
-rw-r--r--Documentation/arm/Samsung-S3C24XX/Overview.txt37
-rw-r--r--Documentation/arm/Samsung-S3C24XX/USB-Host.txt2
3 files changed, 54 insertions, 8 deletions
diff --git a/Documentation/arm/Samsung-S3C24XX/GPIO.txt b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
index 8caea8c237ee..ea7ccfc4b274 100644
--- a/Documentation/arm/Samsung-S3C24XX/GPIO.txt
+++ b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
@@ -13,16 +13,31 @@ 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
19 See include/asm-arm/arch-s3c2410/regs-gpio.h for the list 34 See arch/arm/mach-s3c2410/include/mach/regs-gpio.h for the list
20 of GPIO pins, and the configuration values for them. This 35 of GPIO pins, and the configuration values for them. This
21 is included by using #include <asm/arch/regs-gpio.h> 36 is included by using #include <mach/regs-gpio.h>
22 37
23 The GPIO management functions are defined in the hardware 38 The GPIO management functions are defined in the hardware
24 header include/asm-arm/arch-s3c2410/hardware.h which can be 39 header arch/arm/mach-s3c2410/include/mach/hardware.h which can be
25 included by #include <asm/arch/hardware.h> 40 included by #include <mach/hardware.h>
26 41
27 A useful amount of documentation can be found in the hardware 42 A useful amount of documentation can be found in the hardware
28 header on how the GPIO functions (and others) work. 43 header on how the GPIO functions (and others) work.
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
index d04e1e30c47f..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-------------
@@ -36,7 +37,23 @@ Layout
36 in arch/arm/mach-s3c2410 and S3C2440 in arch/arm/mach-s3c2440 37 in arch/arm/mach-s3c2410 and S3C2440 in arch/arm/mach-s3c2440
37 38
38 Register, kernel and platform data definitions are held in the 39 Register, kernel and platform data definitions are held in the
39 include/asm-arm/arch-s3c2410 directory. 40 arch/arm/mach-s3c2410 directory./include/mach
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.
40 57
41 58
42Machines 59Machines
@@ -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----------------
diff --git a/Documentation/arm/Samsung-S3C24XX/USB-Host.txt b/Documentation/arm/Samsung-S3C24XX/USB-Host.txt
index b93b68e2b143..67671eba4231 100644
--- a/Documentation/arm/Samsung-S3C24XX/USB-Host.txt
+++ b/Documentation/arm/Samsung-S3C24XX/USB-Host.txt
@@ -49,7 +49,7 @@ Board Support
49Platform Data 49Platform Data
50------------- 50-------------
51 51
52 See linux/include/asm-arm/arch-s3c2410/usb-control.h for the 52 See arch/arm/mach-s3c2410/include/mach/usb-control.h for the
53 descriptions of the platform device data. An implementation 53 descriptions of the platform device data. An implementation
54 can be found in linux/arch/arm/mach-s3c2410/usb-simtec.c . 54 can be found in linux/arch/arm/mach-s3c2410/usb-simtec.c .
55 55