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  1. ################################################################################
  2. ## Raspberry Pi Configuration Settings
  3. ##
  4. ## Revision 16, 2013/06/22
  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/RPiconfig
  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. ## Overclock settings will be disabled at runtime if the SoC reaches temp_limit
  19. ##
  20. ################################################################################
  21.  
  22. ################################################################################
  23. ## Standard Definition Video Settings
  24. ################################################################################
  25.  
  26. ## sdtv_mode
  27. ## defines the TV standard for composite output
  28. ##
  29. ## Value Description
  30. ## -------------------------------------------------------------------------
  31. ## 0 Normal NTSC (Default)
  32. ## 1 Japanese version of NTSC - no pedestal
  33. ## 2 Normal PAL
  34. ## 3 Brazilian version of PAL - 525/60 rather than 625/50, different
  35. ## subcarrier
  36. ##
  37. #sdtv_mode=0
  38.  
  39. ## sdtv_aspect
  40. ## defines the aspect ratio for composite output
  41. ##
  42. ## Value Description
  43. ## -------------------------------------------------------------------------
  44. ## 1 4:3 (Default)
  45. ## 2 14:9
  46. ## 3 16:9
  47. ##
  48. sdtv_aspect=3
  49.  
  50. ## sdtv_disable_colourburst
  51. ## Disables colour burst on composite output. The picture will be
  52. ## monochrome, but possibly sharper
  53. ##
  54. ## Value Description
  55. ## -------------------------------------------------------------------------
  56. ## 0 Colour burst is enabled (Default)
  57. ## 1 Colour burst is disabled
  58. ##
  59. #sdtv_disable_colourburst=1
  60.  
  61. ################################################################################
  62. ## High Definition Video Settings
  63. ################################################################################
  64.  
  65. ## hdmi_safe
  66. ## Use "safe mode" settings to try to boot with maximum hdmi compatibility.
  67. ##
  68. ## Value Description
  69. ## -------------------------------------------------------------------------
  70. ## 0 Disabled (Default)
  71. ## 1 Enabled (this does: hdmi_force_hotplug=1,
  72. ## hdmi_ignore_edid=0xa5000080,
  73. ## config_hdmi_boost=4, hdmi_group=2,
  74. ## hdmi_mode=4, disable_overscan=0,
  75. ## overscan_left=24, overscan_right=24,
  76. ## overscan_top=24, overscan_bottom=24)
  77. ##
  78. #hdmi_safe=1
  79.  
  80. ## hdmi_force_hotplug
  81. ## Pretends HDMI hotplug signal is asserted so it appears a HDMI display
  82. ## is attached
  83. ##
  84. ## Value Description
  85. ## -------------------------------------------------------------------------
  86. ## 0 Disabled (Default)
  87. ## 1 Use HDMI mode even if no HDMI monitor is detected
  88. ##
  89. #hdmi_force_hotplug=1
  90.  
  91. ## hdmi_ignore_hotplug
  92. ## Pretends HDMI hotplug signal is not asserted so it appears a HDMI
  93. ## display is not attached
  94. ##
  95. ## Value Description
  96. ## -------------------------------------------------------------------------
  97. ## 0 Disabled (Default)
  98. ## 1 Use composite mode even if HDMI monitor is detected
  99. ##
  100. #hdmi_ignore_hotplug=1
  101.  
  102. ## hdmi_drive
  103. ## chooses between HDMI and DVI modes
  104. ##
  105. ## Value Description
  106. ## -------------------------------------------------------------------------
  107. ## 1 Normal DVI mode (No sound)
  108. ## 2 Normal HDMI mode (Sound will be sent if supported and enabled)
  109. ##
  110. hdmi_drive=2
  111.  
  112. ## hdmi_ignore_edid
  113. ## Enables the ignoring of EDID/display data
  114. ##
  115. #hdmi_ignore_edid=0xa5000080
  116.  
  117. ## hdmi_edid_file
  118. ## Read the EDID data from the edid.dat file instead of from the attached
  119. ## device
  120. ##
  121. ## Value Description
  122. ## -------------------------------------------------------------------------
  123. ## 0 Read EDID data from attached device (Default)
  124. ## 1 Read EDID data from edid.txt file
  125. ##
  126. #hdmi_edid_file=1
  127.  
  128. ## hdmi_ignore_edid_audio
  129. ## Pretends all audio formats are unsupported by display. This means ALSA
  130. ## will default to analogue.
  131. ##
  132. ## Value Description
  133. ## -------------------------------------------------------------------------
  134. ## 0 Use EDID provided values (Default)
  135. ## 1 Pretend all audio formats are unsupported
  136. ##
  137. #hdmi_ignore_edid_audio=1
  138.  
  139. ## hdmi_force_edid_audio
  140. ## Pretends all audio formats are supported by display, allowing
  141. ## passthrough of DTS/AC3 even when not reported as supported.
  142. ##
  143. ## Value Description
  144. ## -------------------------------------------------------------------------
  145. ## 0 Use EDID provided values (Default)
  146. ## 1 Pretend all audio formats are supported
  147. ##
  148. #hdmi_force_edid_audio=1
  149.  
  150. ## hdmi_force_edid_3d
  151. ## Pretends all CEA modes support 3D even when edid doesn't indicate
  152. ## support for them.
  153. ##
  154. ## Value Description
  155. ## -------------------------------------------------------------------------
  156. ## 0 Use EDID provided values (Default)
  157. ## 1 Pretend 3D mode is supported
  158. ##
  159. #hdmi_force_edid_3d=1
  160.  
  161. ## avoid_edid_fuzzy_match
  162. ## Avoid fuzzy matching of modes described in edid.
  163. ##
  164. ## Value Description
  165. ## -------------------------------------------------------------------------
  166. ## 0 Use fuzzy matching (Default)
  167. ## 1 Avoid fuzzy matching
  168. ##
  169. #avoid_edid_fuzzy_match=1
  170.  
  171. ## hdmi_pixel_encoding
  172. ## Force the pixel encoding mode.
  173. ## By default it will use the mode requested from edid so shouldn't
  174. ## need changing.
  175. ##
  176. ## Value Description
  177. ## -------------------------------------------------------------------------
  178. ## 0 Use EDID provided values (Default)
  179. ## 1 RGB limited (16-235)
  180. ## 2 RGB full ( 0-255)
  181. ## 3 YCbCr limited (16-235)
  182. ## 4 YCbCr limited ( 0-255)
  183. ##
  184. #hdmi_pixel_encoding=1
  185.  
  186. ## hdmi_group
  187. ## Defines the HDMI type
  188. ##
  189. ## Value Description
  190. ## -------------------------------------------------------------------------
  191. ## 0 Use the preferred group reported by the edid (Default)
  192. ## 1 CEA
  193. ## 2 DMT
  194. ##
  195. #hdmi_group=1
  196.  
  197. ## hdmi_mode
  198. ## defines screen resolution in CEA or DMT format
  199. ##
  200. ## H means 16:9 variant (of a normally 4:3 mode).
  201. ## 2x means pixel doubled (i.e. higher clock rate, with each pixel repeated
  202. ## twice)
  203. ## 4x means pixel quadrupled (i.e. higher clock rate, with each pixel
  204. ## repeated four times)
  205. ## reduced blanking means fewer bytes are used for blanking within the data
  206. ## stream (i.e. lower clock rate, with fewer wasted bytes)
  207. ##
  208. ## Value hdmi_group=CEA hdmi_group=DMT
  209. ## -------------------------------------------------------------------------
  210. ## 1 VGA 640x350 85Hz
  211. ## 2 480p 60Hz 640x400 85Hz
  212. ## 3 480p 60Hz H 720x400 85Hz
  213. ## 4 720p 60Hz 640x480 60Hz
  214. ## 5 1080i 60Hz 640x480 72Hz
  215. ## 6 480i 60Hz 640x480 75Hz
  216. ## 7 480i 60Hz H 640x480 85Hz
  217. ## 8 240p 60Hz 800x600 56Hz
  218. ## 9 240p 60Hz H 800x600 60Hz
  219. ## 10 480i 60Hz 4x 800x600 72Hz
  220. ## 11 480i 60Hz 4x H 800x600 75Hz
  221. ## 12 240p 60Hz 4x 800x600 85Hz
  222. ## 13 240p 60Hz 4x H 800x600 120Hz
  223. ## 14 480p 60Hz 2x 848x480 60Hz
  224. ## 15 480p 60Hz 2x H 1024x768 43Hz DO NOT USE
  225. ## 16 1080p 60Hz 1024x768 60Hz
  226. ## 17 576p 50Hz 1024x768 70Hz
  227. ## 18 576p 50Hz H 1024x768 75Hz
  228. ## 19 720p 50Hz 1024x768 85Hz
  229. ## 20 1080i 50Hz 1024x768 120Hz
  230. ## 21 576i 50Hz 1152x864 75Hz
  231. ## 22 576i 50Hz H 1280x768 reduced blanking
  232. ## 23 288p 50Hz 1280x768 60Hz
  233. ## 24 288p 50Hz H 1280x768 75Hz
  234. ## 25 576i 50Hz 4x 1280x768 85Hz
  235. ## 26 576i 50Hz 4x H 1280x768 120Hz reduced blanking
  236. ## 27 288p 50Hz 4x 1280x800 reduced blanking
  237. ## 28 288p 50Hz 4x H 1280x800 60Hz
  238. ## 29 576p 50Hz 2x 1280x800 75Hz
  239. ## 30 576p 50Hz 2x H 1280x800 85Hz
  240. ## 31 1080p 50Hz 1280x800 120Hz reduced blanking
  241. ## 32 1080p 24Hz 1280x960 60Hz
  242. ## 33 1080p 25Hz 1280x960 85Hz
  243. ## 34 1080p 30Hz 1280x960 120Hz reduced blanking
  244. ## 35 480p 60Hz 4x 1280x1024 60Hz
  245. ## 36 480p 60Hz 4x H 1280x1024 75Hz
  246. ## 37 576p 50Hz 4x 1280x1024 85Hz
  247. ## 38 576p 50Hz 4x H 1280x1024 120Hz reduced blanking
  248. ## 39 1080i 50Hz reduced blanking 1360x768 60Hz
  249. ## 40 1080i 100Hz 1360x768 120Hz reduced blanking
  250. ## 41 720p 100Hz 1400x1050 reduced blanking
  251. ## 42 576p 100Hz 1400x1050 60Hz
  252. ## 43 576p 100Hz H 1400x1050 75Hz
  253. ## 44 576i 100Hz 1400x1050 85Hz
  254. ## 45 576i 100Hz H 1400x1050 120Hz reduced blanking
  255. ## 46 1080i 120Hz 1440x900 reduced blanking
  256. ## 47 720p 120Hz 1440x900 60Hz
  257. ## 48 480p 120Hz 1440x900 75Hz
  258. ## 49 480p 120Hz H 1440x900 85Hz
  259. ## 50 480i 120Hz 1440x900 120Hz reduced blanking
  260. ## 51 480i 120Hz H 1600x1200 60Hz
  261. ## 52 576p 200Hz 1600x1200 65Hz
  262. ## 53 576p 200Hz H 1600x1200 70Hz
  263. ## 54 576i 200Hz 1600x1200 75Hz
  264. ## 55 576i 200Hz H 1600x1200 85Hz
  265. ## 56 480p 240Hz 1600x1200 120Hz reduced blanking
  266. ## 57 480p 240Hz H 1680x1050 reduced blanking
  267. ## 58 480i 240Hz 1680x1050 60Hz
  268. ## 59 480i 240Hz H 1680x1050 75Hz
  269. ## 60 1680x1050 85Hz
  270. ## 61 1680x1050 120Hz reduced blanking
  271. ## 62 1792x1344 60Hz
  272. ## 63 1792x1344 75Hz
  273. ## 64 1792x1344 120Hz reduced blanking
  274. ## 65 1856x1392 60Hz
  275. ## 66 1856x1392 75Hz
  276. ## 67 1856x1392 120Hz reduced blanking
  277. ## 68 1920x1200 reduced blanking
  278. ## 69 1920x1200 60Hz
  279. ## 70 1920x1200 75Hz
  280. ## 71 1920x1200 85Hz
  281. ## 72 1920x1200 120Hz reduced blanking
  282. ## 73 1920x1440 60Hz
  283. ## 74 1920x1440 75Hz
  284. ## 75 1920x1440 120Hz reduced blanking
  285. ## 76 2560x1600 reduced blanking
  286. ## 77 2560x1600 60Hz
  287. ## 78 2560x1600 75Hz
  288. ## 79 2560x1600 85Hz
  289. ## 80 2560x1600 120Hz reduced blanking
  290. ## 81 1366x768 60Hz
  291. ## 82 1080p 60Hz
  292. ## 83 1600x900 reduced blanking
  293. ## 84 2048x1152 reduced blanking
  294. ## 85 720p 60Hz
  295. ## 86 1366x768 reduced blanking
  296. ##
  297. hdmi_mode=16
  298.  
  299. ## config_hdmi_boost
  300. ## configure the signal strength of the HDMI interface.
  301. ##
  302. ## Value Description
  303. ## -------------------------------------------------------------------------
  304. ## 0 (Default)
  305. ## 1
  306. ## 2
  307. ## 3
  308. ## 4 Try if you have interference issues with HDMI
  309. ## 5
  310. ## 6
  311. ## 7 Maximum
  312. ##
  313. #config_hdmi_boost=0
  314.  
  315. ## hdmi_ignore_cec_init
  316. ## Doesn't sent initial active source message. Avoids bringing
  317. ## (CEC enabled) TV out of standby and channel switch when rebooting.
  318. ##
  319. ## Value Description
  320. ## -------------------------------------------------------------------------
  321. ## 0 Normal behaviour (Default)
  322. ## 1 Doesn't sent initial active source message
  323. ##
  324. #hdmi_ignore_cec_init=1
  325.  
  326. ## hdmi_ignore_cec
  327. ## Pretends CEC is not supported at all by TV.
  328. ## No CEC functions will be supported.
  329. ##
  330. ## Value Description
  331. ## -------------------------------------------------------------------------
  332. ## 0 Normal behaviour (Default)
  333. ## 1 Pretend CEC is not supported by TV
  334. ##
  335. #hdmi_ignore_cec=1
  336.  
  337. ################################################################################
  338. ## Overscan Video Settings
  339. ################################################################################
  340.  
  341. ## overscan_left
  342. ## Number of pixels to skip on left
  343. ##
  344. #overscan_left=0
  345.  
  346. ## overscan_right
  347. ## Number of pixels to skip on right
  348. ##
  349. #overscan_right=0
  350.  
  351. ## overscan_top
  352. ## Number of pixels to skip on top
  353. ##
  354. #overscan_top=0
  355.  
  356. ## overscan_bottom
  357. ## Number of pixels to skip on bottom
  358. ##
  359. #overscan_bottom=0
  360.  
  361. ## disable_overscan
  362. ## Set to 1 to disable overscan
  363. ##
  364. ## Value Description
  365. ## -------------------------------------------------------------------------
  366. ## 0 Overscan Enabled (Default)
  367. ## 1 Overscan Disabled
  368. ##
  369. #disable_overscan=1
  370.  
  371. ################################################################################
  372. ## Framebuffer Video Settings
  373. ################################################################################
  374.  
  375. ## framebuffer_width
  376. ## Console framebuffer width in pixels. Default is display width minus
  377. ## overscan.
  378. ##
  379. #framebuffer_width=0
  380.  
  381. ## framebuffer_height
  382. ## Console framebuffer height in pixels. Default is display height minus
  383. ## overscan.
  384. ##
  385. #framebuffer_height=0
  386.  
  387. ## framebuffer_depth
  388. ## Console framebuffer depth in bits per pixel.
  389. ##
  390. ## Value Description
  391. ## -------------------------------------------------------------------------
  392. ## 8 Valid, but default RGB palette makes an unreadable screen
  393. ## 16 (Default)
  394. ## 24 Looks better but has corruption issues as of 2012/06/15
  395. ## 32 Has no corruption issues but needs framebuffer_ignore_alpha=1
  396. ## and shows the wrong colors as of 2012/06/15
  397. ##
  398. framebuffer_depth=32
  399.  
  400. ## framebuffer_ignore_alpha
  401. ## Set to 1 to disable alpha channel. Helps with 32bit.
  402. ##
  403. ## Value Description
  404. ## -------------------------------------------------------------------------
  405. ## 0 Enable Alpha Channel (Default)
  406. ## 1 Disable Alpha Channel
  407. ##
  408. framebuffer_ignore_alpha=1
  409.  
  410. ################################################################################
  411. ## General Video Settings
  412. ################################################################################
  413.  
  414. ## display_rotate
  415. ## Rotate the display clockwise or flip the display.
  416. ## The 90 and 270 degrees rotation options require additional memory on GPU,
  417. ## so won't work with the 16M GPU split.
  418. ##
  419. ## Value Description
  420. ## -------------------------------------------------------------------------
  421. ## 0 0 degrees (Default)
  422. ## 1 90 degrees
  423. ## 2 180 degrees
  424. ## 3 270 degrees
  425. ## 0x10000 Horizontal flip
  426. ## 0x20000 Vertical flip
  427. ##
  428. #display_rotate=0
  429.  
  430. ## dispmanx_offline
  431. ## Set to "1" to enable offline compositing
  432. ##
  433. ## Default 0
  434. ##
  435. #dispmanx_offline=0
  436.  
  437. ################################################################################
  438. ## Licensed Codecs
  439. ##
  440. ## Hardware decoding of additional codecs can be enabled by purchasing a
  441. ## license that is locked to the CPU serial number of your Raspberry Pi.
  442. ##
  443. ## Up to 8 licenses per CODEC can be specified as a comma seperated list.
  444. ##
  445. ################################################################################
  446.  
  447. ## decode_MPG2
  448. ## License key to allow hardware MPEG-2 decoding.
  449. ##
  450. #decode_MPG2=0x12345678
  451.  
  452. ## decode_WVC1
  453. ## License key to allow hardware VC-1 decoding.
  454. ##
  455. #decode_WVC1=0x12345678
  456.  
  457. ################################################################################
  458. ## Camera Settings
  459. ################################################################################
  460.  
  461. ## start_x
  462. ## Set to "1" to enable the camera module.
  463. ##
  464. ## Enabling the camera requires gpu_mem option to be specified with a value
  465. ## of at least 128.
  466. ##
  467. ## Default 0
  468. ##
  469. #start_x=0
  470.  
  471. ## disable_camera_led
  472. ## Turn off the red camera led when recording video or taking a still
  473. ## picture.
  474. ##
  475. ## Value Description
  476. ## -------------------------------------------------------------------------
  477. ## 0 LED enabled (Default)
  478. ## 1 LED disabled
  479. ##
  480. #disable_camera_led=1
  481.  
  482. ################################################################################
  483. ## Test Settings
  484. ################################################################################
  485.  
  486. ## test_mode
  487. ## Enable test sound/image during boot for manufacturing test.
  488. ##
  489. ## Value Description
  490. ## -------------------------------------------------------------------------
  491. ## 0 Disable Test Mod (Default)
  492. ## 1 Enable Test Mode
  493. ##
  494. #test_mode=0
  495.  
  496. ################################################################################
  497. ## Memory Settings
  498. ################################################################################
  499.  
  500. ## disable_l2cache
  501. ## Disable arm access to GPU's L2 cache. Needs corresponding L2 disabled
  502. ## kernel.
  503. ##
  504. ## Value Description
  505. ## -------------------------------------------------------------------------
  506. ## 0 Enable L2 Cache (Default)
  507. ## 1 Disable L2 cache
  508. ##
  509. #disable_l2cache=0
  510.  
  511. ## gpu_mem
  512. ## GPU memory allocation in MB for all board revisions.
  513. ##
  514. ## Default 64
  515. ##
  516. #gpu_mem=128
  517.  
  518. ## gpu_mem_256
  519. ## GPU memory allocation in MB for 256MB board revision.
  520. ## This option overrides gpu_mem.
  521. ##
  522. #gpu_mem_256=128
  523.  
  524. ## gpu_mem_512
  525. ## GPU memory allocation in MB for 512MB board revision.
  526. ## This option overrides gpu_mem.
  527. ##
  528. #gpu_mem_512=128
  529.  
  530. ## disable_pvt
  531. ## Disable adjusting the refresh rate of RAM every 500ms
  532. ## (measuring RAM temparature).
  533. ##
  534. #disable_pvt=1
  535.  
  536. ################################################################################
  537. ## CMA - Dynamic Memory Split
  538. ##
  539. ## CMA enables dynamic management of the ARM and GPU memory split at runtime.
  540. ##
  541. ## The following options need to be in cmdline.txt for CMA to work:
  542. ## coherent_pool=6M smsc95xx.turbo_mode=N
  543. ##
  544. ################################################################################
  545.  
  546. ## cma_lwm
  547. ## When GPU has less than cma_lwm (low water mark) memory available it
  548. ## will request some from ARM.
  549. ##
  550. #cma_lwm=16
  551.  
  552. ## cma_hwm
  553. ## When GPU has more than cma_hwm (high water mark) memory available it
  554. ## will release some to ARM.
  555. ##
  556. #cma_hwm=32
  557.  
  558. ################################################################################
  559. ## Boot Option Settings
  560. ################################################################################
  561.  
  562. ## disable_commandline_tags
  563. ## Stop start.elf from filling in ATAGS (memory from 0x100) before
  564. ## launching kernel
  565. ##
  566. #disable_commandline_tags=0
  567.  
  568. ## cmdline (string)
  569. ## Command line parameters. Can be used instead of cmdline.txt file
  570. ##
  571. #cmdline=""
  572.  
  573. ## kernel (string)
  574. ## Alternative name to use when loading kernel.
  575. ##
  576. #kernel=""
  577.  
  578. ## kernel_address
  579. ## Address to load kernel.img file at
  580. ##
  581. #kernel_address=0x00000000
  582.  
  583. ## kernel_old
  584. ## Support loading old kernels
  585. ##
  586. ## Value Description
  587. ## -------------------------------------------------------------------------
  588. ## 0 Disabled (Default)
  589. ## 1 Load kernel at address 0x00000000
  590. ##
  591. #kernel_old=1
  592.  
  593. ## ramfsfile (string)
  594. ## ramfs file to load
  595. ##
  596. #ramfsfile=""
  597.  
  598. ## ramfsaddr
  599. ## Address to load ramfs file at
  600. ##
  601. #ramfsaddr=0x00000000
  602.  
  603. ## initramfs (string address)
  604. ## ramfs file and address to load it at (it's like ramfsfile+ramfsaddr in
  605. ## one option).
  606. ##
  607. ## NOTE: this option uses different syntax than all other options - you
  608. ## should not use "=" character here.
  609. ##
  610. #initramfs initramf.gz 0x00800000
  611.  
  612. ## device_tree_address
  613. ## Address to load device_tree at
  614. ##
  615. #device_tree_address=0x00000000
  616.  
  617. ## init_uart_baud
  618. ## Initial uart baud rate.
  619. ##
  620. ## Default 115200
  621. ##
  622. #init_uart_baud=115200
  623.  
  624. ## init_uart_clock
  625. ## Initial uart clock.
  626. ##
  627. ## Default 3000000 (3MHz)
  628. ##
  629. #init_uart_clock=3000000
  630.  
  631. ## init_emmc_clock
  632. ## Initial emmc clock, increasing this can speedup your SD-card.
  633. ##
  634. ## Default 100000000 (100mhz)
  635. ##
  636. #init_emmc_clock=100000000
  637.  
  638. ## boot_delay
  639. ## Wait for a given number of seconds in start.elf before loading
  640. ## kernel.img.
  641. ##
  642. ## delay = (1000 * boot_delay) + boot_delay_ms
  643. ##
  644. ## Default 1
  645. ##
  646. #boot_delay=0
  647.  
  648. ## boot_delay_ms
  649. ## Wait for a given number of milliseconds in start.elf before loading
  650. ## kernel.img.
  651. ##
  652. ## delay = (1000 * boot_delay) + boot_delay_ms
  653. ##
  654. ## Default 0
  655. ##
  656. #boot_delay_ms=0
  657.  
  658. ## avoid_safe_mode
  659. ## Adding a jumper between pins 5 & 6 of P1 enables a recovery Safe Mode.
  660. ## If pins 5 & 6 are used for connecting to external devices (e.g. GPIO),
  661. ## then this setting can be used to ensure Safe Mode is not triggered.
  662. ##
  663. ## Value Description
  664. ## -------------------------------------------------------------------------
  665. ## 0 Respect Safe Mode input (Default)
  666. ## 1 Ignore Safe Mode input
  667. ##
  668. #avoid_safe_mode=1
  669.  
  670. ## disable_splash
  671. ## Avoids the rainbow splash screen on boot.
  672. ##
  673. ## Value Description
  674. ## -------------------------------------------------------------------------
  675. ## 0 Splash screen enabled (Default)
  676. ## 1 Splash screen disabled
  677. ##
  678. #disable_splash=1
  679.  
  680. ################################################################################
  681. ## Overclocking Settings
  682. ##
  683. ## ARM, SDRAM and GPU each have their own PLLs and can have unrelated
  684. ## frequencies.
  685. ##
  686. ## The GPU core, h264, v3d and isp share a PLL, so need to have related
  687. ## frequencies.
  688. ## pll_freq = floor(2400 / (2 * core_freq)) * (2 * core_freq)
  689. ## gpu_freq = pll_freq / [even number]
  690. ##
  691. ## The effective gpu_freq is automatically rounded to nearest even integer, so
  692. ## asking for core_freq = 500 and gpu_freq = 300 will result in divisor of
  693. ## 2000/300 = 6.666 => 6 and so 333.33MHz.
  694. ##
  695. ##
  696. ## Standard Profiles:
  697. ## arm_freq core_freq sdram_freq over_voltage
  698. ## -------------------------------------------------------------------------
  699. ## None 700 250 400 0
  700. ## Modest 800 300 400 0
  701. ## Medium 900 333 450 2
  702. ## High 950 450 450 6
  703. ## Turbo 1000 500 500 6
  704. ##
  705. ################################################################################
  706.  
  707. ## force_turbo
  708. ## Control the kernel "ondemand" governor. It has no effect if no overclock
  709. ## settings are specified.
  710. ## May set warrany bit.
  711. ##
  712. ## Value Description
  713. ## -------------------------------------------------------------------------
  714. ## 0 Enable dynamic clocks and voltage for the ARM core, GPU core and
  715. ## SDRAM (Default).
  716. ## Overclocking of h264_freq, v3d_freq and isp_freq is ignored.
  717. ## 1 Disable dynamic clocks and voltage for the ARM core, GPU core
  718. ## and SDRAM.
  719. ## Overclocking of h264_freq, v3d_freq and isp_freq is allowed.
  720. ##
  721. #force_turbo=0
  722.  
  723. ## initial_turbo
  724. ## Enables turbo mode from boot for the given value in seconds (up to 60)
  725. ## or until cpufreq sets a frequency. Can help with sdcard corruption if
  726. ## overclocked.
  727. ##
  728. ## Default 0
  729. ##
  730. #initial_turbo=0
  731.  
  732. ## temp_limit
  733. ## Overheat protection. Sets clocks and voltages to default when the SoC
  734. ## reaches this Celsius value.
  735. ## Setting this higher than default voids warranty.
  736. ##
  737. ## Default 85
  738. ##
  739. #temp_limit=85
  740.  
  741. ## arm_freq
  742. ## Frequency of ARM in MHz.
  743. ##
  744. ## Default 700.
  745. ##
  746. #arm_freq=700
  747.  
  748. ## arm_freq_min
  749. ## Minimum frequency of ARM in MHz (used for dynamic clocking).
  750. ##
  751. ## Default 700.
  752. ##
  753. #arm_freq_min=700
  754.  
  755. ## gpu_freq
  756. ## Sets core_freq, h264_freq, isp_freq, v3d_freq together.
  757. ##
  758. ## Default 250.
  759. ##
  760. #gpu_freq=250
  761.  
  762. ## core_freq
  763. ## Frequency of GPU processor core in MHz. It has an impact on ARM
  764. ## performance since it drives L2 cache.
  765. ##
  766. ## Default 250.
  767. ##
  768. #core_freq=250
  769.  
  770. ## core_freq_min
  771. ## Minimum frequency of GPU processor core in MHz (used for dynamic
  772. ## clocking). It has an impact on ARM performance since it drives L2 cache.
  773. ##
  774. ## Default 250.
  775. ##
  776. #core_freq_min=250
  777.  
  778. ## h264_freq
  779. ## Frequency of hardware video block in MHz.
  780. ##
  781. ## Default 250.
  782. ##
  783. #h264_freq=250
  784.  
  785. ## isp_freq
  786. ## Frequency of image sensor pipeline block in MHz.
  787. ##
  788. ## Default 250.
  789. ##
  790. #isp_freq=250
  791.  
  792. ## v3d_freq
  793. ## Frequency of 3D block in MHz.
  794. ##
  795. ## Default 250.
  796. ##
  797. #v3d_freq=250
  798.  
  799. ## sdram_freq
  800. ## Frequency of SDRAM in MHz.
  801. ##
  802. ## Default 400.
  803. ##
  804. #sdram_freq=400
  805.  
  806. ## sdram_freq_min
  807. ## Minimum frequency of SDRAM in MHz (used for dynamic clocking).
  808. ##
  809. ## Default 400.
  810. ##
  811. #sdram_freq_min=400
  812.  
  813. ## avoid_pwm_pll
  814. ## Don't dedicate a pll to PWM audio. This will reduce analogue audio
  815. ## quality slightly. The spare PLL allows the core_freq to be set
  816. ## independently from the rest of the gpu allowing more control over
  817. ## overclocking.
  818. ##
  819. ## Value Description
  820. ## -------------------------------------------------------------------------
  821. ## 0 Linked core_freq (Default)
  822. ## 1 Unlinked core_freq
  823. ##
  824. #avoid_pwm_pll=1
  825.  
  826. ################################################################################
  827. ## Voltage Settings
  828. ################################################################################
  829.  
  830. ## current_limit_override
  831. ## Disables SMPS current limit protection. Can help if you are currently
  832. ## hitting a reboot failure when overclocking too high.
  833. ## May set warrany bit.
  834. ##
  835. #current_limit_override=0x5A000020
  836.  
  837. ## over_voltage
  838. ## ARM/GPU core voltage adjust.
  839. ## May set warrany bit.
  840. ##
  841. ## Value Description
  842. ## -------------------------------------------------------------------------
  843. ## -16 0.8 V
  844. ## -15 0.825 V
  845. ## -14 0.85 V
  846. ## -13 0.875 V
  847. ## -12 0.9 V
  848. ## -11 0.925 V
  849. ## -10 0.95 V
  850. ## -9 0.975 V
  851. ## -8 1.0 V
  852. ## -7 1.025 V
  853. ## -6 1.05 V
  854. ## -5 1.075 V
  855. ## -4 1.1 V
  856. ## -3 1.125 V
  857. ## -2 1.15 V
  858. ## -1 1.175 V
  859. ## 0 1.2 V (Default)
  860. ## 1 1.225 V
  861. ## 2 1.25 V
  862. ## 3 1.275 V
  863. ## 4 1.3 V
  864. ## 5 1.325 V
  865. ## 6 1.35 V
  866. ## 7 1.375 V (requires force_turbo=1 or current_limit_override)
  867. ## 8 1.4 V (requires force_turbo=1 or current_limit_override)
  868. ##
  869. #over_voltage=0
  870.  
  871. ## over_voltage_min
  872. ## Minimum ARM/GPU core voltage adjust (used for dynamic clocking).
  873. ##
  874. ## Value Description
  875. ## -------------------------------------------------------------------------
  876. ## -16 0.8 V
  877. ## -15 0.825 V
  878. ## -14 0.85 V
  879. ## -13 0.875 V
  880. ## -12 0.9 V
  881. ## -11 0.925 V
  882. ## -10 0.95 V
  883. ## -9 0.975 V
  884. ## -8 1.0 V
  885. ## -7 1.025 V
  886. ## -6 1.05 V
  887. ## -5 1.075 V
  888. ## -4 1.1 V
  889. ## -3 1.125 V
  890. ## -2 1.15 V
  891. ## -1 1.175 V
  892. ## 0 1.2 V (Default)
  893. ## 1 1.225 V
  894. ## 2 1.25 V
  895. ## 3 1.275 V
  896. ## 4 1.3 V
  897. ## 5 1.325 V
  898. ## 6 1.35 V
  899. ## 7 1.375 V (requires force_turbo=1)
  900. ## 8 1.4 V (requires force_turbo=1)
  901. ##
  902. #over_voltage_min=0
  903.  
  904. ## over_voltage_sdram
  905. ## Sets over_voltage_sdram_c, over_voltage_sdram_i, over_voltage_sdram_p
  906. ## together
  907. ##
  908. ## Value Description
  909. ## -------------------------------------------------------------------------
  910. ## -16 0.8 V
  911. ## -15 0.825 V
  912. ## -14 0.85 V
  913. ## -13 0.875 V
  914. ## -12 0.9 V
  915. ## -11 0.925 V
  916. ## -10 0.95 V
  917. ## -9 0.975 V
  918. ## -8 1.0 V
  919. ## -7 1.025 V
  920. ## -6 1.05 V
  921. ## -5 1.075 V
  922. ## -4 1.1 V
  923. ## -3 1.125 V
  924. ## -2 1.15 V
  925. ## -1 1.175 V
  926. ## 0 1.2 V (Default)
  927. ## 1 1.225 V
  928. ## 2 1.25 V
  929. ## 3 1.275 V
  930. ## 4 1.3 V
  931. ## 5 1.325 V
  932. ## 6 1.35 V
  933. ## 7 1.375 V
  934. ## 8 1.4 V
  935. ##
  936. #over_voltage_sdram=0
  937.  
  938. ## over_voltage_sdram_c
  939. ## SDRAM controller voltage adjust.
  940. ##
  941. ## Value Description
  942. ## -------------------------------------------------------------------------
  943. ## -16 0.8 V
  944. ## -15 0.825 V
  945. ## -14 0.85 V
  946. ## -13 0.875 V
  947. ## -12 0.9 V
  948. ## -11 0.925 V
  949. ## -10 0.95 V
  950. ## -9 0.975 V
  951. ## -8 1.0 V
  952. ## -7 1.025 V
  953. ## -6 1.05 V
  954. ## -5 1.075 V
  955. ## -4 1.1 V
  956. ## -3 1.125 V
  957. ## -2 1.15 V
  958. ## -1 1.175 V
  959. ## 0 1.2 V (Default)
  960. ## 1 1.225 V
  961. ## 2 1.25 V
  962. ## 3 1.275 V
  963. ## 4 1.3 V
  964. ## 5 1.325 V
  965. ## 6 1.35 V
  966. ## 7 1.375 V
  967. ## 8 1.4 V
  968. ##
  969. #over_voltage_sdram_c=0
  970.  
  971. ## over_voltage_sdram_i
  972. ## SDRAM I/O voltage adjust.
  973. ##
  974. ## Value Description
  975. ## -------------------------------------------------------------------------
  976. ## -16 0.8 V
  977. ## -15 0.825 V
  978. ## -14 0.85 V
  979. ## -13 0.875 V
  980. ## -12 0.9 V
  981. ## -11 0.925 V
  982. ## -10 0.95 V
  983. ## -9 0.975 V
  984. ## -8 1.0 V
  985. ## -7 1.025 V
  986. ## -6 1.05 V
  987. ## -5 1.075 V
  988. ## -4 1.1 V
  989. ## -3 1.125 V
  990. ## -2 1.15 V
  991. ## -1 1.175 V
  992. ## 0 1.2 V (Default)
  993. ## 1 1.225 V
  994. ## 2 1.25 V
  995. ## 3 1.275 V
  996. ## 4 1.3 V
  997. ## 5 1.325 V
  998. ## 6 1.35 V
  999. ## 7 1.375 V
  1000. ## 8 1.4 V
  1001. ##
  1002. #over_voltage_sdram_i=0
  1003.  
  1004. ## over_voltage_sdram_p
  1005. ## SDRAM phy voltage adjust.
  1006. ##
  1007. ## Value Description
  1008. ## -------------------------------------------------------------------------
  1009. ## -16 0.8 V
  1010. ## -15 0.825 V
  1011. ## -14 0.85 V
  1012. ## -13 0.875 V
  1013. ## -12 0.9 V
  1014. ## -11 0.925 V
  1015. ## -10 0.95 V
  1016. ## -9 0.975 V
  1017. ## -8 1.0 V
  1018. ## -7 1.025 V
  1019. ## -6 1.05 V
  1020. ## -5 1.075 V
  1021. ## -4 1.1 V
  1022. ## -3 1.125 V
  1023. ## -2 1.15 V
  1024. ## -1 1.175 V
  1025. ## 0 1.2 V (Default)
  1026. ## 1 1.225 V
  1027. ## 2 1.25 V
  1028. ## 3 1.275 V
  1029. ## 4 1.3 V
  1030. ## 5 1.325 V
  1031. ## 6 1.35 V
  1032. ## 7 1.375 V
  1033. ## 8 1.4 V
  1034. ##
  1035. #over_voltage_sdram_p=0
  1036.  
  1037. ################################################################################
  1038. ## USB Power
  1039. ################################################################################
  1040.  
  1041. ## max_usb_current
  1042. ## When set to 1, change the output current limit (for all 4 USB
  1043. ## ports combined) from 600mA to double that, 1200mA.
  1044. ##
  1045. ## This option is not available for Model A/B boards.
  1046. ##
  1047. ## Default 0.
  1048. ##
  1049. #max_usb_current=0
  1050.  
  1051. ################################################################################
  1052. ## Base Device Tree Parameters
  1053. ################################################################################
  1054.  
  1055. ## audio
  1056. ## Enable the onboard ALSA audio
  1057. ##
  1058. ## Default off.
  1059. ##
  1060. #dtparam=audio=off
  1061.  
  1062. ## i2c_arm
  1063. ## Enable the ARM's i2c interface
  1064. ##
  1065. ## Default off.
  1066. ##
  1067. #dtparam=i2c_arm=off
  1068.  
  1069. ## i2c_vc
  1070. ## Enable the i2c interface
  1071. ##
  1072. ## Usually reserved for the VideoCore processor
  1073. ##
  1074. ## Default off.
  1075. ##
  1076. #dtparam=i2c_vc=off
  1077.  
  1078. ## i2c_arm_baudrate
  1079. ## Set the baudrate of the ARM's i2c interface
  1080. ##
  1081. ## Default 100000.
  1082. ##
  1083. #dtparam=i2c_arm_baudrate=100000
  1084.  
  1085. ## i2c_vc_baudrate
  1086. ## Set the baudrate of the VideoCore i2c interface
  1087. ##
  1088. ## Default 100000.
  1089. ##
  1090. #dtparam=i2c_vc_baudrate=100000
  1091.  
  1092. ## i2s
  1093. ## Set to "on" to enable the i2s interface
  1094. ##
  1095. ## Default off.
  1096. ##
  1097. #dtparam=i2s=off
  1098.  
  1099. ## spi
  1100. ## Set to "on" to enable the spi interfaces
  1101. ##
  1102. ## Default off.
  1103. ##
  1104. #dtparam=spi=off
  1105.  
  1106. ## random
  1107. ## Set to "on" to enable the hardware random
  1108. ##
  1109. ## Default off.
  1110. ##
  1111. #dtparam=random=off
  1112.  
  1113. ## uart0
  1114. ## Set to "off" to disable uart0
  1115. ##
  1116. ## Default on.
  1117. ##
  1118. #dtparam=uart0=on
  1119.  
  1120. ## watchdog
  1121. ## Set to "on" to enable the hardware watchdog
  1122. ##
  1123. ## Default off.
  1124. ##
  1125. #dtparam=watchdog=off
  1126.  
  1127. ## act_led_trigger
  1128. ## Choose which activity the LED tracks.
  1129. ##
  1130. ## Use "heartbeat" for a nice load indicator.
  1131. ##
  1132. ## Default mmc.
  1133. ##
  1134. #dtparam=act_led_trigger=mmc
  1135.  
  1136. ## act_led_activelow
  1137. ## Set to "on" to invert the sense of the LED
  1138. ##
  1139. ## Default off.
  1140. ##
  1141. #dtparam=act_led_activelow=off
  1142.  
  1143. ## act_led_gpio
  1144. ## Set which GPIO to use for the activity LED
  1145. ##
  1146. ## In case you want to connect it to an external device
  1147. ##
  1148. ## Default 16 on a non-Plus board, 47 on a Plus or Pi 2.
  1149. ##
  1150. #dtparam=act_led_gpio=47
  1151.  
  1152. ## pwr_led_trigger
  1153. ## Choose which activity the LED tracks.
  1154. ##
  1155. ## Use "heartbeat" for a nice load indicator.
  1156. ##
  1157. ## Not available on Model A/B boards.
  1158. ##
  1159. ## Default mmc.
  1160. ##
  1161. #dtparam=pwr_led_trigger=mmc
  1162.  
  1163. ## pwr_led_activelow
  1164. ## Set to "on" to invert the sense of the LED
  1165. ##
  1166. ## Not available on Model A/B boards.
  1167. ##
  1168. ## Default off.
  1169. ##
  1170. #dtparam=pwr_led_activelow=off
  1171.  
  1172. ## pwr_led_gpio
  1173. ## Set which GPIO to use for the PWR LED
  1174. ##
  1175. ## In case you want to connect it to an external device
  1176. ##
  1177. ## Not available on Model A/B boards.
  1178. ##
  1179. ## Default 35.
  1180. ##
  1181. #dtparam=pwr_led_gpio=35
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