1################################################################################ 2## Raspberry Pi Configuration Settings 3## 4## Revision 14, 2012/10/22 5## 6## Details taken from the eLinux wiki 7## For up-to-date information please refer to wiki page. 8## 9## Wiki Location : http://elinux.org/RPi_config.txt 10## 11## 12## Description: 13## Details of each setting are described with each section that begins with 14## a double hashed comment ('##') 15## It is up to the user to remove the single hashed comment ('#') from each 16## option they want to enable, and to set the specific value of that option. 17## 18## WARNING: Setting the following combination of parameters will set a 19## permanent bit within the SOC and your warranty is void. 20## over_voltage>0, and at least one of the following: 21## force_turbo=1 22## current_limit_override=0x5A000020 23## temp_limit>85 24## 25## Overclock settings will be disabled at runtime if the SoC reaches temp_limit 26## 27################################################################################ 28 29################################################################################ 30## Standard Definition Video Settings 31################################################################################ 32 33## sdtv_mode 34## defines the TV standard for composite output 35## 36## Value Description 37## ------------------------------------------------------------------------- 38## 0 Normal NTSC (Default) 39## 1 Japanese version of NTSC - no pedestal 40## 2 Normal PAL 41## 3 Brazilian version of PAL - 525/60 rather than 625/50, different 42## subcarrier 43## 44#sdtv_mode=0 45 46## sdtv_aspect 47## defines the aspect ratio for composite output 48## 49## Value Description 50## ------------------------------------------------------------------------- 51## 1 4:3 (Default) 52## 2 14:9 53## 3 16:9 54## 55#sdtv_aspect=1 56 57## sdtv_disable_colourburst 58## Disables colour burst on composite output. The picture will be 59## monochrome, but possibly sharper 60## 61## Value Description 62## ------------------------------------------------------------------------- 63## 0 Colour burst is enabled (Default) 64## 1 Colour burst is disabled 65## 66#sdtv_disable_colourburst=1 67 68################################################################################ 69## High Definition Video Settings 70################################################################################ 71 72## hdmi_safe 73## Use "safe mode" settings to try to boot with maximum hdmi compatibility. 74## 75## Value Description 76## ------------------------------------------------------------------------- 77## 0 Disabled (Default) 78## 1 Enabled (this does: hdmi_force_hotplug=1, config_hdmi_boost=4, 79## hdmi_group=1, hdmi_mode=1, 80## disable_overscan=0) 81## 82#hdmi_safe=1 83 84## hdmi_force_hotplug 85## Pretends HDMI hotplug signal is asserted so it appears a HDMI display 86## is attached 87## 88## Value Description 89## ------------------------------------------------------------------------- 90## 0 Disabled (Default) 91## 1 Use HDMI mode even if no HDMI monitor is detected 92## 93#hdmi_force_hotplug=1 94 95## hdmi_ignore_hotplug 96## Pretends HDMI hotplug signal is not asserted so it appears a HDMI 97## display is not attached 98## 99## Value Description 100## ------------------------------------------------------------------------- 101## 0 Disabled (Default) 102## 1 Use composite mode even if HDMI monitor is detected 103## 104#hdmi_ignore_hotplug=1 105 106## hdmi_drive 107## chooses between HDMI and DVI modes 108## 109## Value Description 110## ------------------------------------------------------------------------- 111## 1 Normal DVI mode (No sound) 112## 2 Normal HDMI mode (Sound will be sent if supported and enabled) 113## 114#hdmi_drive=2 115 116## hdmi_ignore_edid 117## Enables the ignoring of EDID/display data 118## 119#hdmi_ignore_edid=0xa5000080 120 121## hdmi_edid_file 122## Read the EDID data from the edid.dat file instead of from the attached 123## device 124## 125## Value Description 126## ------------------------------------------------------------------------- 127## 0 Read EDID data from attached device (Default) 128## 1 Read EDID data from edid.txt file 129## 130#hdmi_edid_file=1 131 132## hdmi_force_edid_audio 133## Pretends all audio formats are supported by display, allowing 134## passthrough of DTS/AC3 even when not reported as supported. 135## 136## Value Description 137## ------------------------------------------------------------------------- 138## 0 Use EDID provided values (Default) 139## 1 Pretend all audio formats are supported 140## 141#hdmi_force_edid_audio=1 142 143## avoid_edid_fuzzy_match 144## Avoid fuzzy matching of modes described in edid. 145## 146## Value Description 147## ------------------------------------------------------------------------- 148## 0 Use fuzzy matching (Default) 149## 1 Avoid fuzzy matching 150## 151#avoid_edid_fuzzy_match=1 152 153## hdmi_group 154## Defines the HDMI type 155## 156## Value Description 157## ------------------------------------------------------------------------- 158## 0 Use the preferred group reported by the edid (Default) 159## 1 CEA 160## 2 DMT 161## 162#hdmi_group=1 163 164## hdmi_mode 165## defines screen resolution in CEA or DMT format 166## 167## H means 16:9 variant (of a normally 4:3 mode). 168## 2x means pixel doubled (i.e. higher clock rate, with each pixel repeated 169## twice) 170## 4x means pixel quadrupled (i.e. higher clock rate, with each pixel 171## repeated four times) 172## reduced blanking means fewer bytes are used for blanking within the data 173## stream (i.e. lower clock rate, with fewer wasted bytes) 174## 175## Value hdmi_group=CEA hdmi_group=DMT 176## ------------------------------------------------------------------------- 177## 1 VGA 640x350 85Hz 178## 2 480p 60Hz 640x400 85Hz 179## 3 480p 60Hz H 720x400 85Hz 180## 4 720p 60Hz 640x480 60Hz 181## 5 1080i 60Hz 640x480 72Hz 182## 6 480i 60Hz 640x480 75Hz 183## 7 480i 60Hz H 640x480 85Hz 184## 8 240p 60Hz 800x600 56Hz 185## 9 240p 60Hz H 800x600 60Hz 186## 10 480i 60Hz 4x 800x600 72Hz 187## 11 480i 60Hz 4x H 800x600 75Hz 188## 12 240p 60Hz 4x 800x600 85Hz 189## 13 240p 60Hz 4x H 800x600 120Hz 190## 14 480p 60Hz 2x 848x480 60Hz 191## 15 480p 60Hz 2x H 1024x768 43Hz DO NOT USE 192## 16 1080p 60Hz 1024x768 60Hz 193## 17 576p 50Hz 1024x768 70Hz 194## 18 576p 50Hz H 1024x768 75Hz 195## 19 720p 50Hz 1024x768 85Hz 196## 20 1080i 50Hz 1024x768 120Hz 197## 21 576i 50Hz 1152x864 75Hz 198## 22 576i 50Hz H 1280x768 reduced blanking 199## 23 288p 50Hz 1280x768 60Hz 200## 24 288p 50Hz H 1280x768 75Hz 201## 25 576i 50Hz 4x 1280x768 85Hz 202## 26 576i 50Hz 4x H 1280x768 120Hz reduced blanking 203## 27 288p 50Hz 4x 1280x800 reduced blanking 204## 28 288p 50Hz 4x H 1280x800 60Hz 205## 29 576p 50Hz 2x 1280x800 75Hz 206## 30 576p 50Hz 2x H 1280x800 85Hz 207## 31 1080p 50Hz 1280x800 120Hz reduced blanking 208## 32 1080p 24Hz 1280x960 60Hz 209## 33 1080p 25Hz 1280x960 85Hz 210## 34 1080p 30Hz 1280x960 120Hz reduced blanking 211## 35 480p 60Hz 4x 1280x1024 60Hz 212## 36 480p 60Hz 4x H 1280x1024 75Hz 213## 37 576p 50Hz 4x 1280x1024 85Hz 214## 38 576p 50Hz 4x H 1280x1024 120Hz reduced blanking 215## 39 1080i 50Hz reduced blanking 1360x768 60Hz 216## 40 1080i 100Hz 1360x768 120Hz reduced blanking 217## 41 720p 100Hz 1400x1050 reduced blanking 218## 42 576p 100Hz 1400x1050 60Hz 219## 43 576p 100Hz H 1400x1050 75Hz 220## 44 576i 100Hz 1400x1050 85Hz 221## 45 576i 100Hz H 1400x1050 120Hz reduced blanking 222## 46 1080i 120Hz 1440x900 reduced blanking 223## 47 720p 120Hz 1440x900 60Hz 224## 48 480p 120Hz 1440x900 75Hz 225## 49 480p 120Hz H 1440x900 85Hz 226## 50 480i 120Hz 1440x900 120Hz reduced blanking 227## 51 480i 120Hz H 1600x1200 60Hz 228## 52 576p 200Hz 1600x1200 65Hz 229## 53 576p 200Hz H 1600x1200 70Hz 230## 54 576i 200Hz 1600x1200 75Hz 231## 55 576i 200Hz H 1600x1200 85Hz 232## 56 480p 240Hz 1600x1200 120Hz reduced blanking 233## 57 480p 240Hz H 1680x1050 reduced blanking 234## 58 480i 240Hz 1680x1050 60Hz 235## 59 480i 240Hz H 1680x1050 75Hz 236## 60 1680x1050 85Hz 237## 61 1680x1050 120Hz reduced blanking 238## 62 1792x1344 60Hz 239## 63 1792x1344 75Hz 240## 64 1792x1344 120Hz reduced blanking 241## 65 1856x1392 60Hz 242## 66 1856x1392 75Hz 243## 67 1856x1392 120Hz reduced blanking 244## 68 1920x1200 reduced blanking 245## 69 1920x1200 60Hz 246## 70 1920x1200 75Hz 247## 71 1920x1200 85Hz 248## 72 1920x1200 120Hz reduced blanking 249## 73 1920x1440 60Hz 250## 74 1920x1440 75Hz 251## 75 1920x1440 120Hz reduced blanking 252## 76 2560x1600 reduced blanking 253## 77 2560x1600 60Hz 254## 78 2560x1600 75Hz 255## 79 2560x1600 85Hz 256## 80 2560x1600 120Hz reduced blanking 257## 81 1366x768 60Hz 258## 82 1080p 60Hz 259## 83 1600x900 reduced blanking 260## 84 2048x1152 reduced blanking 261## 85 720p 60Hz 262## 86 1366x768 reduced blanking 263## 264#hdmi_mode=1 265 266## config_hdmi_boost 267## configure the signal strength of the HDMI interface. 268## 269## Value Description 270## ------------------------------------------------------------------------- 271## 0 (Default) 272## 1 273## 2 274## 3 275## 4 Try if you have interference issues with HDMI 276## 5 277## 6 278## 7 Maximum 279## 280#config_hdmi_boost=0 281 282## hdmi_ignore_cec_init 283## Doesn't sent initial active source message. Avoids bringing 284## (CEC enabled) TV out of standby and channel switch when rebooting. 285## 286## Value Description 287## ------------------------------------------------------------------------- 288## 0 Normal behaviour (Default) 289## 1 Doesn't sent initial active source message 290## 291#hdmi_ignore_cec_init=1 292 293## hdmi_ignore_cec 294## Pretends CEC is not supported at all by TV. 295## No CEC functions will be supported. 296## 297## Value Description 298## ------------------------------------------------------------------------- 299## 0 Normal behaviour (Default) 300## 1 Pretend CEC is not supported by TV 301## 302#hdmi_ignore_cec=1 303 304################################################################################ 305## Overscan Video Settings 306################################################################################ 307 308## overscan_left 309## Number of pixels to skip on left 310## 311#overscan_left=0 312 313## overscan_right 314## Number of pixels to skip on right 315## 316#overscan_right=0 317 318## overscan_top 319## Number of pixels to skip on top 320## 321#overscan_top=0 322 323## overscan_bottom 324## Number of pixels to skip on bottom 325## 326#overscan_bottom=0 327 328## disable_overscan 329## Set to 1 to disable overscan 330## 331## Value Description 332## ------------------------------------------------------------------------- 333## 0 Overscan Enabled (Default) 334## 1 Overscan Disabled 335## 336#disable_overscan=1 337 338################################################################################ 339## Framebuffer Video Settings 340################################################################################ 341 342## framebuffer_width 343## Console framebuffer width in pixels. Default is display width minus 344## overscan. 345## 346#framebuffer_width=0 347 348## framebuffer_height 349## Console framebuffer height in pixels. Default is display height minus 350## overscan. 351## 352#framebuffer_height=0 353 354## framebuffer_depth 355## Console framebuffer depth in bits per pixel. 356## 357## Value Description 358## ------------------------------------------------------------------------- 359## 8 Valid, but default RGB palette makes an unreadable screen 360## 16 (Default) 361## 24 Looks better but has corruption issues as of 2012/06/15 362## 32 Has no corruption issues but needs framebuffer_ignore_alpha=1 363## and shows the wrong colors as of 2012/06/15 364## 365#framebuffer_depth=16 366 367## framebuffer_ignore_alpha 368## Set to 1 to disable alpha channel. Helps with 32bit. 369## 370## Value Description 371## ------------------------------------------------------------------------- 372## 0 Enable Alpha Channel (Default) 373## 1 Disable Alpha Channel 374## 375#framebuffer_ignore_alpha=0 376 377################################################################################ 378## General Video Settings 379################################################################################ 380 381## display_rotate 382## Rotate the display clockwise or flip the display. 383## The 90 and 270 degrees rotation options require additional memory on GPU, 384## so won't work with the 16M GPU split. 385## 386## Value Description 387## ------------------------------------------------------------------------- 388## 0 0 degrees (Default) 389## 1 90 degrees 390## 2 180 degrees 391## 3 270 degrees 392## 0x10000 Horizontal flip 393## 0x20000 Vertical flip 394## 395#display_rotate=0 396 397################################################################################ 398## Licensed Codecs 399## 400## Hardware decoding of additional codecs can be enabled by purchasing a 401## license that is locked to the CPU serial number of your Raspberry Pi. 402## 403## Up to 8 licenses per CODEC can be specified as a comma seperated list. 404## 405################################################################################ 406 407## decode_MPG2 408## License key to allow hardware MPEG-2 decoding. 409## 410#decode_MPG2=0x12345678 411 412## decode_WVC1 413## License key to allow hardware VC-1 decoding. 414## 415#decode_WVC1=0x12345678 416 417################################################################################ 418## Test Settings 419################################################################################ 420 421## test_mode 422## Enable test sound/image during boot for manufacturing test. 423## 424## Value Description 425## ------------------------------------------------------------------------- 426## 0 Disable Test Mod (Default) 427## 1 Enable Test Mode 428## 429#test_mode=0 430 431################################################################################ 432## Memory Settings 433################################################################################ 434 435## disable_l2cache 436## Disable arm access to GPU's L2 cache. Needs corresponding L2 disabled 437## kernel. 438## 439## Value Description 440## ------------------------------------------------------------------------- 441## 0 Enable L2 Cache (Default) 442## 1 Disable L2 cache 443## 444#disable_l2cache=0 445 446## gpu_mem 447## GPU memory allocation in MB for all board revisions. 448## 449## Default 64 450## 451#gpu_mem=128 452 453## gpu_mem_256 454## GPU memory allocation in MB for 256MB board revision. 455## This option overrides gpu_mem. 456## 457#gpu_mem_256=128 458 459## gpu_mem_512 460## GPU memory allocation in MB for 512MB board revision. 461## This option overrides gpu_mem. 462## 463#gpu_mem_512=128 464 465## gpu_mem_1024 466## GPU memory allocation in MB for 1024MB board revision. 467## This option overrides gpu_mem. 468## 469#gpu_mem_1024=128 470 471################################################################################ 472## Boot Option Settings 473################################################################################ 474 475## disable_commandline_tags 476## Stop start.elf from filling in ATAGS (memory from 0x100) before 477## launching kernel 478## 479#disable_commandline_tags=2 480 481## enable_uart 482## Enables or disables uart pin multiplexing 483## Raspberry Pi 1/2: if unset, uart is enabled by default 484## Raspberry Pi 3: if unset uart is disabled by default 485## 486enable_uart=1 487 488## cmdline (string) 489## Command line parameters. Can be used instead of cmdline.txt file 490## 491#cmdline="" 492 493## kernel (string) 494## Alternative name to use when loading kernel. 495## 496#kernel="" 497 498## kernel_address 499## Address to load kernel.img file at 500## 501#kernel_address=0x8000 502 503## ramfsfile (string) 504## ramfs file to load 505## 506#ramfsfile="" 507 508## ramfsaddr 509## Address to load ramfs file at 510## 511#ramfsaddr=0x00000000 512 513## initramfs (string address) 514## ramfs file and address to load it at (it's like ramfsfile+ramfsaddr in 515## one option). 516## 517## NOTE: this option uses different syntax than all other options - you 518## should not use "=" character here. 519## 520#initramfs initramf.gz 0x00800000 521 522## device_tree_address 523## Address to load device_tree at 524## 525#device_tree_address=0x100 526 527## init_uart_baud 528## Initial uart baud rate. 529## 530## Default 115200 531## 532#init_uart_baud=115200 533 534## init_uart_clock 535## Initial uart clock. 536## 537## Default 3000000 (3MHz) 538## 539#init_uart_clock=3000000 540 541## init_emmc_clock 542## Initial emmc clock, increasing this can speedup your SD-card. 543## 544## Default 100000000 (100mhz) 545## 546#init_emmc_clock=100000000 547 548## boot_delay 549## Wait for a given number of seconds in start.elf before loading 550## kernel.img. 551## 552## delay = (1000 * boot_delay) + boot_delay_ms 553## 554## Default 1 555## 556#boot_delay=0 557 558## boot_delay_ms 559## Wait for a given number of milliseconds in start.elf before loading 560## kernel.img. 561## 562## delay = (1000 * boot_delay) + boot_delay_ms 563## 564## Default 0 565## 566#boot_delay_ms=0 567 568## avoid_safe_mode 569## Adding a jumper between pins 5 & 6 of P1 enables a recovery Safe Mode. 570## If pins 5 & 6 are used for connecting to external devices (e.g. GPIO), 571## then this setting can be used to ensure Safe Mode is not triggered. 572## 573## Value Description 574## ------------------------------------------------------------------------- 575## 0 Respect Safe Mode input (Default) 576## 1 Ignore Safe Mode input 577## 578#avoid_safe_mode=1 579 580################################################################################ 581## Overclocking Settings 582## 583## ARM, SDRAM and GPU each have their own PLLs and can have unrelated 584## frequencies. 585## 586## The GPU core, h264, v3d and isp share a PLL, so need to have related 587## frequencies. 588## pll_freq = floor(2400 / (2 * core_freq)) * (2 * core_freq) 589## gpu_freq = pll_freq / [even number] 590## 591## The effective gpu_freq is automatically rounded to nearest even integer, so 592## asking for core_freq = 500 and gpu_freq = 300 will result in divisor of 593## 2000/300 = 6.666 => 6 and so 333.33MHz. 594## 595## 596## Standard Profiles: 597## arm_freq core_freq sdram_freq over_voltage 598## ------------------------------------------------------------------------- 599## None 700 250 400 0 600## Modest 800 300 400 0 601## Medium 900 333 450 2 602## High 950 450 450 6 603## Turbo 1000 500 500 6 604## 605################################################################################ 606 607## force_turbo 608## Control the kernel "ondemand" governor. It has no effect if no overclock 609## settings are specified. 610## 611## Value Description 612## ------------------------------------------------------------------------- 613## 0 Enable dynamic clocks and voltage for the ARM core, GPU core and 614## SDRAM (Default). 615## Overclocking of h264_freq, v3d_freq and isp_freq is ignored. 616## 1 Disable dynamic clocks and voltage for the ARM core, GPU core 617## and SDRAM. 618## Overclocking of h264_freq, v3d_freq and isp_freq is allowed. 619## 620#force_turbo=0 621 622## initial_turbo 623## Enables turbo mode from boot for the given value in seconds (up to 60) 624## or until cpufreq sets a frequency. Can help with sdcard corruption if 625## overclocked. 626## 627## Default 0 628## 629#initial_turbo=0 630 631## temp_limit 632## Overheat protection. Sets clocks and voltages to default when the SoC 633## reaches this Celsius value. 634## Setting this higher than default voids warranty. 635## 636## Default 85 637## 638#temp_limit=85 639 640## arm_freq 641## Frequency of ARM in MHz. 642## 643## Default 700. 644## 645#arm_freq=700 646 647## arm_freq_min 648## Minimum frequency of ARM in MHz (used for dynamic clocking). 649## 650## Default 700. 651## 652#arm_freq_min=700 653 654## gpu_freq 655## Sets core_freq, h264_freq, isp_freq, v3d_freq together. 656## 657## Default 250. 658## 659#gpu_freq=250 660 661## core_freq 662## Frequency of GPU processor core in MHz. It has an impact on ARM 663## performance since it drives L2 cache. 664## 665## Default 250. 666## 667#core_freq=250 668 669## core_freq_min 670## Minimum frequency of GPU processor core in MHz (used for dynamic 671## clocking). It has an impact on ARM performance since it drives L2 cache. 672## 673## Default 250. 674## 675#core_freq_min=250 676 677## h264_freq 678## Frequency of hardware video block in MHz. 679## 680## Default 250. 681## 682#h264_freq=250 683 684## isp_freq 685## Frequency of image sensor pipeline block in MHz. 686## 687## Default 250. 688## 689#isp_freq=250 690 691## v3d_freq 692## Frequency of 3D block in MHz. 693## 694## Default 250. 695## 696#v3d_freq=250 697 698## sdram_freq 699## Frequency of SDRAM in MHz. 700## 701## Default 400. 702## 703#sdram_freq=400 704 705## sdram_freq_min 706## Minimum frequency of SDRAM in MHz (used for dynamic clocking). 707## 708## Default 400. 709## 710#sdram_freq_min=400 711 712## avoid_pwm_pll 713## Unlink core_freq from the rest of the gpu. Analog audio should still 714## work, but from a fractional divider, so lower quality. 715## 716## Value Description 717## ------------------------------------------------------------------------- 718## 0 Linked core_freq (Default) 719## 1 Unlinked core_freq 720## 721#avoid_pwm_pll=1 722 723################################################################################ 724## Voltage Settings 725################################################################################ 726 727## current_limit_override 728## Disables SMPS current limit protection. Can help if you are currently 729## hitting a reboot failure when overclocking too high. 730## 731#current_limit_override=0x5A000020 732 733## over_voltage 734## ARM/GPU core voltage adjust. 735## 736## Value Description 737## ------------------------------------------------------------------------- 738## -16 0.8 V 739## -15 0.825 V 740## -14 0.85 V 741## -13 0.875 V 742## -12 0.9 V 743## -11 0.925 V 744## -10 0.95 V 745## -9 0.975 V 746## -8 1.0 V 747## -7 1.025 V 748## -6 1.05 V 749## -5 1.075 V 750## -4 1.1 V 751## -3 1.125 V 752## -2 1.15 V 753## -1 1.175 V 754## 0 1.2 V (Default) 755## 1 1.225 V 756## 2 1.25 V 757## 3 1.275 V 758## 4 1.3 V 759## 5 1.325 V 760## 6 1.35 V 761## 7 1.375 V (requires force_turbo=1) 762## 8 1.4 V (requires force_turbo=1) 763## 764#over_voltage=0 765 766## over_voltage_min 767## Minimum ARM/GPU core voltage adjust (used for dynamic clocking). 768## 769## Value Description 770## ------------------------------------------------------------------------- 771## -16 0.8 V 772## -15 0.825 V 773## -14 0.85 V 774## -13 0.875 V 775## -12 0.9 V 776## -11 0.925 V 777## -10 0.95 V 778## -9 0.975 V 779## -8 1.0 V 780## -7 1.025 V 781## -6 1.05 V 782## -5 1.075 V 783## -4 1.1 V 784## -3 1.125 V 785## -2 1.15 V 786## -1 1.175 V 787## 0 1.2 V (Default) 788## 1 1.225 V 789## 2 1.25 V 790## 3 1.275 V 791## 4 1.3 V 792## 5 1.325 V 793## 6 1.35 V 794## 7 1.375 V (requires force_turbo=1) 795## 8 1.4 V (requires force_turbo=1) 796## 797#over_voltage_min=0 798 799## over_voltage_sdram 800## Sets over_voltage_sdram_c, over_voltage_sdram_i, over_voltage_sdram_p 801## together 802## 803## Value Description 804## ------------------------------------------------------------------------- 805## -16 0.8 V 806## -15 0.825 V 807## -14 0.85 V 808## -13 0.875 V 809## -12 0.9 V 810## -11 0.925 V 811## -10 0.95 V 812## -9 0.975 V 813## -8 1.0 V 814## -7 1.025 V 815## -6 1.05 V 816## -5 1.075 V 817## -4 1.1 V 818## -3 1.125 V 819## -2 1.15 V 820## -1 1.175 V 821## 0 1.2 V (Default) 822## 1 1.225 V 823## 2 1.25 V 824## 3 1.275 V 825## 4 1.3 V 826## 5 1.325 V 827## 6 1.35 V 828## 7 1.375 V 829## 8 1.4 V 830## 831#over_voltage_sdram=0 832 833## over_voltage_sdram_c 834## SDRAM controller voltage adjust. 835## 836## Value Description 837## ------------------------------------------------------------------------- 838## -16 0.8 V 839## -15 0.825 V 840## -14 0.85 V 841## -13 0.875 V 842## -12 0.9 V 843## -11 0.925 V 844## -10 0.95 V 845## -9 0.975 V 846## -8 1.0 V 847## -7 1.025 V 848## -6 1.05 V 849## -5 1.075 V 850## -4 1.1 V 851## -3 1.125 V 852## -2 1.15 V 853## -1 1.175 V 854## 0 1.2 V (Default) 855## 1 1.225 V 856## 2 1.25 V 857## 3 1.275 V 858## 4 1.3 V 859## 5 1.325 V 860## 6 1.35 V 861## 7 1.375 V 862## 8 1.4 V 863## 864#over_voltage_sdram_c=0 865 866## over_voltage_sdram_i 867## SDRAM I/O voltage adjust. 868## 869## Value Description 870## ------------------------------------------------------------------------- 871## -16 0.8 V 872## -15 0.825 V 873## -14 0.85 V 874## -13 0.875 V 875## -12 0.9 V 876## -11 0.925 V 877## -10 0.95 V 878## -9 0.975 V 879## -8 1.0 V 880## -7 1.025 V 881## -6 1.05 V 882## -5 1.075 V 883## -4 1.1 V 884## -3 1.125 V 885## -2 1.15 V 886## -1 1.175 V 887## 0 1.2 V (Default) 888## 1 1.225 V 889## 2 1.25 V 890## 3 1.275 V 891## 4 1.3 V 892## 5 1.325 V 893## 6 1.35 V 894## 7 1.375 V 895## 8 1.4 V 896## 897#over_voltage_sdram_i=0 898 899## over_voltage_sdram_p 900## SDRAM phy voltage adjust. 901## 902## Value Description 903## ------------------------------------------------------------------------- 904## -16 0.8 V 905## -15 0.825 V 906## -14 0.85 V 907## -13 0.875 V 908## -12 0.9 V 909## -11 0.925 V 910## -10 0.95 V 911## -9 0.975 V 912## -8 1.0 V 913## -7 1.025 V 914## -6 1.05 V 915## -5 1.075 V 916## -4 1.1 V 917## -3 1.125 V 918## -2 1.15 V 919## -1 1.175 V 920## 0 1.2 V (Default) 921## 1 1.225 V 922## 2 1.25 V 923## 3 1.275 V 924## 4 1.3 V 925## 5 1.325 V 926## 6 1.35 V 927## 7 1.375 V 928## 8 1.4 V 929## 930#over_voltage_sdram_p=0 931 932################################################################################ 933## Device Tree Settings 934################################################################################ 935 936dtparam=random=on,watchdog=on,audio=on,i2c0=on,i2c1=on,spi=on 937 938#dtoverlay=adau1977-adc 939#dtoverlay=audioinjector-wm8731-audio 940#dtoverlay=hifiberry-amp 941#dtoverlay=hifiberry-dac 942#dtoverlay=hifiberry-dacplus 943#dtoverlay=hifiberry-digi 944#dtoverlay=iqaudio-dac 945#dtoverlay=iqaudio-dacplus 946#dtoverlay=justboom-dac 947#dtoverlay=justboom-digi 948#dtoverlay=raspidac3 949#dtoverlay=rpi-dac 950#dtoverlay=rpi-proto 951#dtoverlay=rra-digidac1-wm8741-audio 952