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RPIconfig

Niveau:3

Le Raspberry n’a pas de BIOS (Basic Input Output System) comme sur un ordinateur. Il utilise un fichier config.txt. Le fichier config.txt est lue par le GPU avant l’initialisation du noyau de l’ARM.
Ce fichier permet d’entrer les licences vidéo pour le décodage  hardware MPEG-2 et VC-1.

Ce fichier est lu lors de l’initialisation par le GPU avant que le processeur ARM (et Linux). Par conséquent, il doit être situé sur la première  partition (boot) de votre carte SD, aux côtés bootcode.bin et start.elf.

Toutes les modifications ne prendront effet après que vous avez redémarré votre Raspberry Pi.

Edition des paramètres:

Vous pouvez éditer ce fichier de configuration à partir d’un PC sous Windows, Mac, Linux, ou sur le Raspberry Pi lui-même.

Le format du fichier est sous la forme d’une simple propriété = valeur déclaration sur chaque ligne, où la valeur est un entier ou une chaîne. Les commentaires peuvent être ajoutés, ou les valeurs de configuration existants peuvent être commentées et désactivé en commençant une ligne avec le # caractère.
C’est dans ce fichier qu’il faut saisir les licences pour le décodage matériel vidéo.

Pour éditer ce fichier, utiliser notepad depuis Windows par exemple ou taper la commande suivante sur votre raspberry:

sudo nano /boot/config.txt

 Paramètres actifs actuels:

Taper les commandes suivantes:
Affichage d’une valeur spécifique de configuration
vcgencmd get_config
Exemple: vcgencmd get_config arm_freq  Affichage du paramètre de la fréquence de l’ARM

Affichage de toutes les options de configuration de nombres entiers qui sont définies (Différent de la valeur zéro).
vcgencmd get_config int

Affichage de toutes les options de configuration de chaîne qui sont définies (Différent de la valeur vide).
vcgencmd get_config str

Voici les paramètres possibles:

Voir aussi le site http://elinux.org/RPiconfig

################################################################################
##  Raspberry Pi Configuration Settings
##
##  Revision 14, 2012/10/22
##
##  Details taken from the eLinux wiki
##  For up-to-date information please refer to wiki page.
##
##  Wiki Location : http://elinux.org/RPi_config.txt
##
##
##  Description:
##    Details of each setting are described with each section that begins with
##    a double hashed comment ('##')
##    It is up to the user to remove the single hashed comment ('#') from each
##    option they want to enable, and to set the specific value of that option.
##
##  WARNING: Setting the following combination of parameters will set a
##  permanent bit within the SOC and your warranty is void.
##    over_voltage>0, and at least one of the following:
##      force_turbo=1
##      current_limit_override=0x5A000020
##      temp_limit>85
##
##  Overclock settings will be disabled at runtime if the SoC reaches temp_limit
##
################################################################################

################################################################################
##  Standard Definition Video Settings
################################################################################

## sdtv_mode
##     defines the TV standard for composite output
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Normal NTSC (Default)
##     1        Japanese version of NTSC - no pedestal
##     2        Normal PAL
##     3        Brazilian version of PAL - 525/60 rather than 625/50, different
##              subcarrier
##
#sdtv_mode=0

## sdtv_aspect
##     defines the aspect ratio for composite output
##
##     Value    Description
##     -------------------------------------------------------------------------
##     1        4:3 (Default)
##     2        14:9
##     3        16:9
##
#sdtv_aspect=1

## sdtv_disable_colourburst
##     Disables colour burst on composite output. The picture will be
##     monochrome, but possibly sharper
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Colour burst is enabled (Default)
##     1        Colour burst is disabled
##
#sdtv_disable_colourburst=1

################################################################################
##  High Definition Video Settings
################################################################################

## hdmi_safe
##     Use "safe mode" settings to try to boot with maximum hdmi compatibility.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Disabled (Default)
##     1        Enabled (this does: hdmi_force_hotplug=1, config_hdmi_boost=4,
##                                  hdmi_group=1, hdmi_mode=1,
##                                  disable_overscan=0)
##
#hdmi_safe=1

## hdmi_force_hotplug
##     Pretends HDMI hotplug signal is asserted so it appears a HDMI display
##     is attached
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Disabled (Default)
##     1        Use HDMI mode even if no HDMI monitor is detected
##
#hdmi_force_hotplug=1

## hdmi_ignore_hotplug
##     Pretends HDMI hotplug signal is not asserted so it appears a HDMI
##     display is not attached
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Disabled (Default)
##     1        Use composite mode even if HDMI monitor is detected
##
#hdmi_ignore_hotplug=1 

## hdmi_drive
##     chooses between HDMI and DVI modes
##
##     Value    Description
##     -------------------------------------------------------------------------
##     1        Normal DVI mode (No sound)
##     2        Normal HDMI mode (Sound will be sent if supported and enabled)
##
#hdmi_drive=2

## hdmi_ignore_edid
##     Enables the ignoring of EDID/display data
##
#hdmi_ignore_edid=0xa5000080

## hdmi_edid_file
##     Read the EDID data from the edid.dat file instead of from the attached
##     device
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Read EDID data from attached device (Default)
##     1        Read EDID data from edid.txt file
##
#hdmi_edid_file=1

## hdmi_force_edid_audio
##     Pretends all audio formats are supported by display, allowing
##     passthrough of DTS/AC3 even when not reported as supported.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Use EDID provided values (Default)
##     1        Pretend all audio formats are supported
##
#hdmi_force_edid_audio=1

## avoid_edid_fuzzy_match
##     Avoid fuzzy matching of modes described in edid.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Use fuzzy matching (Default)
##     1        Avoid fuzzy matching
##
#avoid_edid_fuzzy_match=1

## hdmi_group
##     Defines the HDMI type
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Use the preferred group reported by the edid (Default)
##     1        CEA
##     2        DMT
##
#hdmi_group=1

## hdmi_mode
##     defines screen resolution in CEA or DMT format
##
##     H means 16:9 variant (of a normally 4:3 mode).
##     2x means pixel doubled (i.e. higher clock rate, with each pixel repeated
##                                  twice)
##     4x means pixel quadrupled (i.e. higher clock rate, with each pixel
##                                     repeated four times)
##     reduced blanking means fewer bytes are used for blanking within the data
##                      stream (i.e. lower clock rate, with fewer wasted bytes)
##
##     Value    hdmi_group=CEA                  hdmi_group=DMT
##     -------------------------------------------------------------------------
##     1        VGA                             640x350   85Hz
##     2        480p  60Hz                      640x400   85Hz
##     3        480p  60Hz  H                   720x400   85Hz
##     4        720p  60Hz                      640x480   60Hz
##     5        1080i 60Hz                      640x480   72Hz
##     6        480i  60Hz                      640x480   75Hz
##     7        480i  60Hz  H                   640x480   85Hz
##     8        240p  60Hz                      800x600   56Hz
##     9        240p  60Hz  H                   800x600   60Hz
##     10       480i  60Hz  4x                  800x600   72Hz
##     11       480i  60Hz  4x H                800x600   75Hz
##     12       240p  60Hz  4x                  800x600   85Hz
##     13       240p  60Hz  4x H                800x600   120Hz
##     14       480p  60Hz  2x                  848x480   60Hz
##     15       480p  60Hz  2x H                1024x768  43Hz  DO NOT USE
##     16       1080p 60Hz                      1024x768  60Hz
##     17       576p  50Hz                      1024x768  70Hz
##     18       576p  50Hz  H                   1024x768  75Hz
##     19       720p  50Hz                      1024x768  85Hz
##     20       1080i 50Hz                      1024x768  120Hz
##     21       576i  50Hz                      1152x864  75Hz
##     22       576i  50Hz  H                   1280x768        reduced blanking
##     23       288p  50Hz                      1280x768  60Hz
##     24       288p  50Hz  H                   1280x768  75Hz
##     25       576i  50Hz  4x                  1280x768  85Hz
##     26       576i  50Hz  4x H                1280x768  120Hz reduced blanking
##     27       288p  50Hz  4x                  1280x800        reduced blanking
##     28       288p  50Hz  4x H                1280x800  60Hz
##     29       576p  50Hz  2x                  1280x800  75Hz
##     30       576p  50Hz  2x H                1280x800  85Hz
##     31       1080p 50Hz                      1280x800  120Hz reduced blanking
##     32       1080p 24Hz                      1280x960  60Hz
##     33       1080p 25Hz                      1280x960  85Hz
##     34       1080p 30Hz                      1280x960  120Hz reduced blanking
##     35       480p  60Hz  4x                  1280x1024 60Hz
##     36       480p  60Hz  4x H                1280x1024 75Hz
##     37       576p  50Hz  4x                  1280x1024 85Hz
##     38       576p  50Hz  4x H                1280x1024 120Hz reduced blanking
##     39       1080i 50Hz  reduced blanking    1360x768  60Hz
##     40       1080i 100Hz                     1360x768  120Hz reduced blanking
##     41       720p  100Hz                     1400x1050       reduced blanking
##     42       576p  100Hz                     1400x1050 60Hz
##     43       576p  100Hz H                   1400x1050 75Hz
##     44       576i  100Hz                     1400x1050 85Hz
##     45       576i  100Hz H                   1400x1050 120Hz reduced blanking
##     46       1080i 120Hz                     1440x900        reduced blanking
##     47       720p  120Hz                     1440x900  60Hz
##     48       480p  120Hz                     1440x900  75Hz
##     49       480p  120Hz H                   1440x900  85Hz
##     50       480i  120Hz                     1440x900  120Hz reduced blanking
##     51       480i  120Hz H                   1600x1200 60Hz
##     52       576p  200Hz                     1600x1200 65Hz
##     53       576p  200Hz H                   1600x1200 70Hz
##     54       576i  200Hz                     1600x1200 75Hz
##     55       576i  200Hz H                   1600x1200 85Hz
##     56       480p  240Hz                     1600x1200 120Hz reduced blanking
##     57       480p  240Hz H                   1680x1050       reduced blanking
##     58       480i  240Hz                     1680x1050 60Hz
##     59       480i  240Hz H                   1680x1050 75Hz
##     60                                       1680x1050 85Hz
##     61                                       1680x1050 120Hz reduced blanking
##     62                                       1792x1344 60Hz
##     63                                       1792x1344 75Hz
##     64                                       1792x1344 120Hz reduced blanking
##     65                                       1856x1392 60Hz
##     66                                       1856x1392 75Hz
##     67                                       1856x1392 120Hz reduced blanking
##     68                                       1920x1200       reduced blanking
##     69                                       1920x1200 60Hz
##     70                                       1920x1200 75Hz
##     71                                       1920x1200 85Hz
##     72                                       1920x1200 120Hz reduced blanking
##     73                                       1920x1440 60Hz
##     74                                       1920x1440 75Hz
##     75                                       1920x1440 120Hz reduced blanking
##     76                                       2560x1600       reduced blanking
##     77                                       2560x1600 60Hz
##     78                                       2560x1600 75Hz
##     79                                       2560x1600 85Hz
##     80                                       2560x1600 120Hz reduced blanking
##     81                                       1366x768  60Hz
##     82                                       1080p     60Hz
##     83                                       1600x900        reduced blanking
##     84                                       2048x1152       reduced blanking
##     85                                       720p      60Hz
##     86                                       1366x768        reduced blanking
##
#hdmi_mode=1

## config_hdmi_boost
##     configure the signal strength of the HDMI interface.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        (Default)
##     1
##     2
##     3
##     4        Try if you have interference issues with HDMI
##     5
##     6
##     7        Maximum
##
#config_hdmi_boost=0

## hdmi_ignore_cec_init
##     Doesn't sent initial active source message.  Avoids bringing
##     (CEC enabled) TV out of standby and channel switch when rebooting.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Normal behaviour (Default)
##     1        Doesn't sent initial active source message
##
#hdmi_ignore_cec_init=1

## hdmi_ignore_cec
##     Pretends CEC is not supported at all by TV.
##     No CEC functions will be supported.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Normal behaviour (Default)
##     1        Pretend CEC is not supported by TV
##
#hdmi_ignore_cec=1

################################################################################
##  Overscan Video Settings
################################################################################

## overscan_left
##     Number of pixels to skip on left
##
#overscan_left=0

## overscan_right
##     Number of pixels to skip on right
##
#overscan_right=0

## overscan_top
##     Number of pixels to skip on top
##
#overscan_top=0

## overscan_bottom
##     Number of pixels to skip on bottom
##
#overscan_bottom=0

## disable_overscan
##     Set to 1 to disable overscan
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Overscan Enabled (Default)
##     1        Overscan Disabled
##
#disable_overscan=1

################################################################################
##  Framebuffer Video Settings
################################################################################

## framebuffer_width
##     Console framebuffer width in pixels. Default is display width minus
##     overscan.
##
#framebuffer_width=0

## framebuffer_height
##     Console framebuffer height in pixels. Default is display height minus
##     overscan.
##
#framebuffer_height=0

## framebuffer_depth
##     Console framebuffer depth in bits per pixel.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     8        Valid, but default RGB palette makes an unreadable screen
##     16       (Default)
##     24       Looks better but has corruption issues as of 2012/06/15
##     32       Has no corruption issues but needs framebuffer_ignore_alpha=1
##              and shows the wrong colors as of 2012/06/15
##
#framebuffer_depth=16

## framebuffer_ignore_alpha
##     Set to 1 to disable alpha channel. Helps with 32bit.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Enable Alpha Channel (Default)
##     1        Disable Alpha Channel
##
#framebuffer_ignore_alpha=0

################################################################################
##  General Video Settings
################################################################################

## display_rotate
##     Rotate the display clockwise or flip the display.
##     The 90 and 270 degrees rotation options require additional memory on GPU,
##     so won't work with the 16M GPU split.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        0 degrees (Default)
##     1        90 degrees
##     2        180 degrees
##     3        270 degrees
##     0x10000  Horizontal flip
##     0x20000  Vertical flip
##
#display_rotate=0

################################################################################
##  Licensed Codecs
##
##  Hardware decoding of additional codecs can be enabled by purchasing a
##  license that is locked to the CPU serial number of your Raspberry Pi.
##
##  Up to 8 licenses per CODEC can be specified as a comma seperated list.
##
################################################################################

## decode_MPG2
##     License key to allow hardware MPEG-2 decoding.
##
#decode_MPG2=0x12345678

## decode_WVC1
##     License key to allow hardware VC-1 decoding.
##
#decode_WVC1=0x12345678

################################################################################
##  Test Settings
################################################################################

## test_mode
##     Enable test sound/image during boot for manufacturing test.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Disable Test Mod (Default)
##     1        Enable Test Mode
##
#test_mode=0

################################################################################
##  Memory Settings
################################################################################

## disable_l2cache
##     Disable arm access to GPU's L2 cache. Needs corresponding L2 disabled
##     kernel.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Enable L2 Cache (Default)
##     1        Disable L2 cache
##
#disable_l2cache=0

## gpu_mem
##     GPU memory allocation in MB for all board revisions.
##
##     Default 64
##
#gpu_mem=128

## gpu_mem_256
##     GPU memory allocation in MB for 256MB board revision.
##     This option overrides gpu_mem.
##
#gpu_mem_256=128

## gpu_mem_512
##     GPU memory allocation in MB for 512MB board revision.
##     This option overrides gpu_mem.
##
#gpu_mem_512=128

################################################################################
##  Boot Option Settings
################################################################################

## disable_commandline_tags
##     Stop start.elf from filling in ATAGS (memory from 0x100) before
##     launching kernel
##
#disable_commandline_tags=0

## cmdline (string)
##     Command line parameters. Can be used instead of cmdline.txt file
##
#cmdline=""

## kernel (string)
##     Alternative name to use when loading kernel.
##
#kernel=""

## kernel_address
##     Address to load kernel.img file at
##
#kernel_address=0x00000000

## ramfsfile (string)
##     ramfs file to load
##
#ramfsfile=""

## ramfsaddr
##     Address to load ramfs file at
##
#ramfsaddr=0x00000000

## initramfs (string address)
##     ramfs file and address to load it at (it's like ramfsfile+ramfsaddr in
##     one option).
##
##     NOTE: this option uses different syntax than all other options - you
##           should not use "=" character here.
##
#initramfs initramf.gz 0x00800000

## device_tree_address
##     Address to load device_tree at
##
#device_tree_address=0x00000000

## init_uart_baud
##     Initial uart baud rate.
##
##     Default 115200
##
#init_uart_baud=115200

## init_uart_clock
##     Initial uart clock.
##
##     Default 3000000 (3MHz)
##
#init_uart_clock=3000000

## init_emmc_clock
##     Initial emmc clock, increasing this can speedup your SD-card.
##
##     Default 100000000 (100mhz)
##
#init_emmc_clock=100000000

## boot_delay
##     Wait for a given number of seconds in start.elf before loading
##     kernel.img.
##
##     delay = (1000 * boot_delay) + boot_delay_ms
##
##     Default 1
##
#boot_delay=0

## boot_delay_ms
##     Wait for a given number of milliseconds in start.elf before loading
##     kernel.img.
##
##     delay = (1000 * boot_delay) + boot_delay_ms
##
##     Default 0
##
#boot_delay_ms=0

## avoid_safe_mode
##     Adding a jumper between pins 5 & 6 of P1 enables a recovery Safe Mode.
##     If pins 5 & 6 are used for connecting to external devices (e.g. GPIO),
##     then this setting can be used to ensure Safe Mode is not triggered.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Respect Safe Mode input (Default)
##     1        Ignore Safe Mode input
##
#avoid_safe_mode=1

################################################################################
##  Overclocking Settings
##
##  ARM, SDRAM and GPU each have their own PLLs and can have unrelated
##  frequencies.
##
##  The GPU core, h264, v3d and isp share a PLL, so need to have related
##  frequencies.
##  pll_freq = floor(2400 / (2 * core_freq)) * (2 * core_freq)
##  gpu_freq = pll_freq / [even number]
##
##  The effective gpu_freq is automatically rounded to nearest even integer, so
##  asking for core_freq = 500 and gpu_freq = 300 will result in divisor of
##  2000/300 = 6.666 => 6 and so 333.33MHz.
##
##
##  Standard Profiles:
##                  arm_freq    core_freq    sdram_freq    over_voltage
##     -------------------------------------------------------------------------
##     None         700         250          400           0
##     Modest       800         300          400           0
##     Medium       900         333          450           2
##     High         950         450          450           6
##     Turbo        1000        500          500           6
##
################################################################################

## force_turbo
##     Control the kernel "ondemand" governor. It has no effect if no overclock
##     settings are specified.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Enable dynamic clocks and voltage for the ARM core, GPU core and
##              SDRAM (Default).
##              Overclocking of h264_freq, v3d_freq and isp_freq is ignored.
##     1        Disable dynamic clocks and voltage for the ARM core, GPU core
##              and SDRAM.
##              Overclocking of h264_freq, v3d_freq and isp_freq is allowed.
##
#force_turbo=0

## initial_turbo
##     Enables turbo mode from boot for the given value in seconds (up to 60)
##     or until cpufreq sets a frequency. Can help with sdcard corruption if
##     overclocked.
##
##     Default 0
##
#initial_turbo=0

## temp_limit
##     Overheat protection. Sets clocks and voltages to default when the SoC
##     reaches this Celsius value.
##     Setting this higher than default voids warranty.
##
##     Default 85
##
#temp_limit=85

## arm_freq
##     Frequency of ARM in MHz.
##
##     Default 700.
##
#arm_freq=700

## arm_freq_min
##     Minimum frequency of ARM in MHz (used for dynamic clocking).
##
##     Default 700.
##
#arm_freq_min=700

## gpu_freq
##     Sets core_freq, h264_freq, isp_freq, v3d_freq together.
##
##     Default 250.
##
#gpu_freq=250

## core_freq
##     Frequency of GPU processor core in MHz. It has an impact on ARM
##     performance since it drives L2 cache.
##
##     Default 250.
##
#core_freq=250

## core_freq_min
##     Minimum frequency of GPU processor core in MHz (used for dynamic
##     clocking). It has an impact on ARM performance since it drives L2 cache.
##
##     Default 250.
##
#core_freq_min=250

## h264_freq
##     Frequency of hardware video block in MHz.
##
##     Default 250.
##
#h264_freq=250

## isp_freq
##     Frequency of image sensor pipeline block in MHz.
##
##     Default 250.
##
#isp_freq=250

## v3d_freq
##     Frequency of 3D block in MHz.
##
##     Default 250.
##
#v3d_freq=250

## sdram_freq
##     Frequency of SDRAM in MHz.
##
##     Default 400.
##
#sdram_freq=400

## sdram_freq_min
##     Minimum frequency of SDRAM in MHz (used for dynamic clocking).
##
##     Default 400.
##
#sdram_freq_min=400

## avoid_pwm_pll
##     Unlink core_freq from the rest of the gpu. Analog audio should still
##     work, but from a fractional divider, so lower quality.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Linked core_freq (Default)
##     1        Unlinked core_freq
##
#avoid_pwm_pll=1

################################################################################
##  Voltage Settings
################################################################################

## current_limit_override
##     Disables SMPS current limit protection. Can help if you are currently
##     hitting a reboot failure when overclocking too high.
##
#current_limit_override=0x5A000020

## over_voltage
##     ARM/GPU core voltage adjust.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     -16      0.8   V
##     -15      0.825 V
##     -14      0.85  V
##     -13      0.875 V
##     -12      0.9   V
##     -11      0.925 V
##     -10      0.95  V
##     -9       0.975 V
##     -8       1.0   V
##     -7       1.025 V
##     -6       1.05  V
##     -5       1.075 V
##     -4       1.1   V
##     -3       1.125 V
##     -2       1.15  V
##     -1       1.175 V
##     0        1.2   V (Default)
##     1        1.225 V
##     2        1.25  V
##     3        1.275 V
##     4        1.3   V
##     5        1.325 V
##     6        1.35  V
##     7        1.375 V (requires force_turbo=1)
##     8        1.4   V (requires force_turbo=1)
##
#over_voltage=0

## over_voltage_min
##     Minimum ARM/GPU core voltage adjust (used for dynamic clocking).
##
##     Value    Description
##     -------------------------------------------------------------------------
##     -16      0.8   V
##     -15      0.825 V
##     -14      0.85  V
##     -13      0.875 V
##     -12      0.9   V
##     -11      0.925 V
##     -10      0.95  V
##     -9       0.975 V
##     -8       1.0   V
##     -7       1.025 V
##     -6       1.05  V
##     -5       1.075 V
##     -4       1.1   V
##     -3       1.125 V
##     -2       1.15  V
##     -1       1.175 V
##     0        1.2   V (Default)
##     1        1.225 V
##     2        1.25  V
##     3        1.275 V
##     4        1.3   V
##     5        1.325 V
##     6        1.35  V
##     7        1.375 V (requires force_turbo=1)
##     8        1.4   V (requires force_turbo=1)
##
#over_voltage_min=0

## over_voltage_sdram
##     Sets over_voltage_sdram_c, over_voltage_sdram_i, over_voltage_sdram_p
##     together
##
##     Value    Description
##     -------------------------------------------------------------------------
##     -16      0.8   V
##     -15      0.825 V
##     -14      0.85  V
##     -13      0.875 V
##     -12      0.9   V
##     -11      0.925 V
##     -10      0.95  V
##     -9       0.975 V
##     -8       1.0   V
##     -7       1.025 V
##     -6       1.05  V
##     -5       1.075 V
##     -4       1.1   V
##     -3       1.125 V
##     -2       1.15  V
##     -1       1.175 V
##     0        1.2   V (Default)
##     1        1.225 V
##     2        1.25  V
##     3        1.275 V
##     4        1.3   V
##     5        1.325 V
##     6        1.35  V
##     7        1.375 V
##     8        1.4   V
##
#over_voltage_sdram=0

## over_voltage_sdram_c
##     SDRAM controller voltage adjust.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     -16      0.8   V
##     -15      0.825 V
##     -14      0.85  V
##     -13      0.875 V
##     -12      0.9   V
##     -11      0.925 V
##     -10      0.95  V
##     -9       0.975 V
##     -8       1.0   V
##     -7       1.025 V
##     -6       1.05  V
##     -5       1.075 V
##     -4       1.1   V
##     -3       1.125 V
##     -2       1.15  V
##     -1       1.175 V
##     0        1.2   V (Default)
##     1        1.225 V
##     2        1.25  V
##     3        1.275 V
##     4        1.3   V
##     5        1.325 V
##     6        1.35  V
##     7        1.375 V
##     8        1.4   V
##
#over_voltage_sdram_c=0

## over_voltage_sdram_i
##     SDRAM I/O voltage adjust.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     -16      0.8   V
##     -15      0.825 V
##     -14      0.85  V
##     -13      0.875 V
##     -12      0.9   V
##     -11      0.925 V
##     -10      0.95  V
##     -9       0.975 V
##     -8       1.0   V
##     -7       1.025 V
##     -6       1.05  V
##     -5       1.075 V
##     -4       1.1   V
##     -3       1.125 V
##     -2       1.15  V
##     -1       1.175 V
##     0        1.2   V (Default)
##     1        1.225 V
##     2        1.25  V
##     3        1.275 V
##     4        1.3   V
##     5        1.325 V
##     6        1.35  V
##     7        1.375 V
##     8        1.4   V
##
#over_voltage_sdram_i=0

## over_voltage_sdram_p
##     SDRAM phy voltage adjust.
##
##     Value    Description
##     -------------------------------------------------------------------------
##     -16      0.8   V
##     -15      0.825 V
##     -14      0.85  V
##     -13      0.875 V
##     -12      0.9   V
##     -11      0.925 V
##     -10      0.95  V
##     -9       0.975 V
##     -8       1.0   V
##     -7       1.025 V
##     -6       1.05  V
##     -5       1.075 V
##     -4       1.1   V
##     -3       1.125 V
##     -2       1.15  V
##     -1       1.175 V
##     0        1.2   V (Default)
##     1        1.225 V
##     2        1.25  V
##     3        1.275 V
##     4        1.3   V
##     5        1.325 V
##     6        1.35  V
##     7        1.375 V
##     8        1.4   V
##
#over_voltage_sdram_p=0

 

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