arch/arm/plat-samsung/Kconfig

   1 # arch/arm/plat-samsung/Kconfig
   2 #
   3 # Copyright 2009 Simtec Electronics
   4 #
   5 # Licensed under GPLv2
   6
   7 config PLAT_SAMSUNG
   8         bool
   9         depends on ARCH_S3C2410 || ARCH_S3C24A0 || ARCH_S3C64XX
  10         select NO_IOPORT
  11         default y
  12         help
  13           Base platform code for all Samsung SoC based systems
  14
  15 if PLAT_SAMSUNG
  16
  17 # boot configurations
  18
  19 comment "Boot options"
  20
  21 config S3C_BOOT_WATCHDOG
  22         bool "S3C Initialisation watchdog"
  23         depends on S3C2410_WATCHDOG
  24         help
  25           Say y to enable the watchdog during the kernel decompression
  26           stage. If the kernel fails to uncompress, then the watchdog
  27           will trigger a reset and the system should restart.
  28
  29 config S3C_BOOT_ERROR_RESET
  30         bool "S3C Reboot on decompression error"
  31         help
  32           Say y here to use the watchdog to reset the system if the
  33           kernel decompressor detects an error during decompression.
  34
  35 config S3C_BOOT_UART_FORCE_FIFO
  36        bool "Force UART FIFO on during boot process"
  37        default y
  38        help
  39          Say Y here to force the UART FIFOs on during the kernel
  40          uncompressor
  41
  42
  43 config S3C_LOWLEVEL_UART_PORT
  44         int "S3C UART to use for low-level messages"
  45         default 0
  46         help
  47           Choice of which UART port to use for the low-level messages,
  48           such as the `Uncompressing...` at start time. The value of
  49           this configuration should be between zero and two. The port
  50           must have been initialised by the boot-loader before use.
  51
  52 # clock options
  53
  54 config SAMSUNG_CLKSRC
  55         bool
  56         help
  57           Select the clock code for the clksrc implementation
  58           used by newer systems such as the S3C64XX.
  59
  60 # options for IRQ support
  61
  62 config SAMSUNG_IRQ_VIC_TIMER
  63        bool
  64        help
  65          Internal configuration to build the VIC timer interrupt code.
  66
  67 config SAMSUNG_IRQ_UART
  68        bool
  69        help
  70          Internal configuration to build the IRQ UART demux code.
  71
  72 # options for gpio configuration support
  73
  74 config SAMSUNG_GPIOLIB_4BIT
  75         bool
  76         help
  77           GPIOlib file contains the 4 bit modification functions for gpio
  78           configuration. GPIOlib shall be compiled only for S3C64XX and S5P
  79           series of processors.
  80
  81 config S3C_GPIO_CFG_S3C24XX
  82         bool
  83         help
  84           Internal configuration to enable S3C24XX style GPIO configuration
  85           functions.
  86
  87 config S3C_GPIO_CFG_S3C64XX
  88         bool
  89         help
  90           Internal configuration to enable S3C64XX style GPIO configuration
  91           functions.
  92
  93 config S3C_GPIO_PULL_UPDOWN
  94         bool
  95         help
  96           Internal configuration to enable the correct GPIO pull helper
  97
  98 config S3C_GPIO_PULL_DOWN
  99         bool
 100         help
 101           Internal configuration to enable the correct GPIO pull helper
 102
 103 config S3C_GPIO_PULL_UP
 104         bool
 105         help
 106           Internal configuration to enable the correct GPIO pull helper
 107
 108 config S5P_GPIO_DRVSTR
 109         bool
 110         help
 111           Internal configuration to get and set correct GPIO driver strength
 112           helper
 113
 114 config SAMSUNG_GPIO_EXTRA
 115         int "Number of additional GPIO pins"
 116         default 0
 117         help
 118           Use additional GPIO space in addition to the GPIO's the SOC
 119           provides. This allows expanding the GPIO space for use with
 120           GPIO expanders.
 121
 122 config S3C_GPIO_SPACE
 123         int "Space between gpio banks"
 124         default 0
 125         help
 126           Add a number of spare GPIO entries between each bank for debugging
 127           purposes. This allows any problems where an counter overflows from
 128           one bank to another to be caught, at the expense of using a little
 129           more memory.
 130
 131 config S3C_GPIO_TRACK
 132         bool
 133         help
 134           Internal configuration option to enable the s3c specific gpio
 135           chip tracking if the platform requires it.
 136
 137 # ADC driver
 138
 139 config S3C_ADC
 140         bool "ADC common driver support"
 141         help
 142           Core support for the ADC block found in the Samsung SoC systems
 143           for drivers such as the touchscreen and hwmon to use to share
 144           this resource.
 145
 146 # device definitions to compile in
 147
 148 config S3C_DEV_HSMMC
 149         bool
 150         help
 151           Compile in platform device definitions for HSMMC code
 152
 153 config S3C_DEV_HSMMC1
 154         bool
 155         help
 156           Compile in platform device definitions for HSMMC channel 1
 157
 158 config S3C_DEV_HSMMC2
 159         bool
 160         help
 161           Compile in platform device definitions for HSMMC channel 2
 162
 163 config S3C_DEV_HWMON
 164         bool
 165         help
 166             Compile in platform device definitions for HWMON
 167
 168 config S3C_DEV_I2C1
 169         bool
 170         help
 171           Compile in platform device definitions for I2C channel 1
 172
 173 config S3C_DEV_I2C2
 174         bool
 175         help
 176           Compile in platform device definitions for I2C channel 2
 177
 178 config S3C_DEV_FB
 179         bool
 180         help
 181           Compile in platform device definition for framebuffer
 182
 183 config S3C_DEV_USB_HOST
 184         bool
 185         help
 186           Compile in platform device definition for USB host.
 187
 188 config S3C_DEV_USB_HSOTG
 189         bool
 190         help
 191           Compile in platform device definition for USB high-speed OtG
 192
 193 config S3C_DEV_WDT
 194         bool
 195         default y if ARCH_S3C2410
 196         help
 197           Complie in platform device definition for Watchdog Timer
 198
 199 config S3C_DEV_NAND
 200         bool
 201         help
 202           Compile in platform device definition for NAND controller
 203
 204 config S3C_DEV_RTC
 205         bool
 206         help
 207           Complie in platform device definition for RTC
 208
 209 config SAMSUNG_DEV_ADC
 210         bool
 211         help
 212           Compile in platform device definition for ADC controller
 213
 214 config S3C64XX_DEV_SPI
 215         bool
 216         help
 217           Compile in platform device definitions for S3C64XX's type
 218           SPI controllers.
 219
 220 config SAMSUNG_DEV_TS
 221         bool
 222         help
 223             Common in platform device definitions for touchscreen device
 224
 225 # DMA
 226
 227 config S3C_DMA
 228         bool
 229         help
 230           Internal configuration for S3C DMA core
 231
 232 config S3C_PL330_DMA
 233         bool
 234         select PL330
 235         help
 236           S3C DMA API Driver for PL330 DMAC.
 237
 238 comment "Power management"
 239
 240 config SAMSUNG_PM_DEBUG
 241         bool "S3C2410 PM Suspend debug"
 242         depends on PM
 243         help
 244           Say Y here if you want verbose debugging from the PM Suspend and
 245           Resume code. See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt>
 246           for more information.
 247
 248 config S3C_PM_DEBUG_LED_SMDK
 249        bool "SMDK LED suspend/resume debugging"
 250        depends on PM && (MACH_SMDK6410)
 251        help
 252          Say Y here to enable the use of the SMDK LEDs on the baseboard
 253          for debugging of the state of the suspend and resume process.
 254
 255          Note, this currently only works for S3C64XX based SMDK boards.
 256
 257 config SAMSUNG_PM_CHECK
 258         bool "S3C2410 PM Suspend Memory CRC"
 259         depends on PM && CRC32
 260         help
 261           Enable the PM code's memory area checksum over sleep. This option
 262           will generate CRCs of all blocks of memory, and store them before
 263           going to sleep. The blocks are then checked on resume for any
 264           errors.
 265
 266           Note, this can take several seconds depending on memory size
 267           and CPU speed.
 268
 269           See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt>
 270
 271 config SAMSUNG_PM_CHECK_CHUNKSIZE
 272         int "S3C2410 PM Suspend CRC Chunksize (KiB)"
 273         depends on PM && SAMSUNG_PM_CHECK
 274         default 64
 275         help
 276           Set the chunksize in Kilobytes of the CRC for checking memory
 277           corruption over suspend and resume. A smaller value will mean that
 278           the CRC data block will take more memory, but wil identify any
 279           faults with better precision.
 280
 281           See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt>
 282
 283 endif