config.txt 30 KB

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