Difference between revisions of "RPiconfig"
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overscan_bottom=10''' | overscan_bottom=10''' | ||
− | And | + | And [https://raw.github.com/Evilpaul/RPi-config/master/config.txt here is another example file], containing extended documentation of features. |
=Video mode configuration= | =Video mode configuration= |
Revision as of 05:34, 18 September 2012
The Raspberry Pi config.txt file is read by the GPU before the ARM core is initialised. It can be used to set various system configuration parameters.
This file is an optional file on the boot partition. It would normally be accessible as /boot/config.txt from Linux.
To edit the configuration file, see the instructions at R-Pi_ConfigurationFile.
Contents
File format
The format is "property=value" where value is an integer. You may specify only one option per line. Comments may be added by starting a line with the '#' character.
Here is an example file
# Set stdv mode to PAL (as used in Europe) sdtv_mode=2 # Force the monitor to HDMI mode so that sound will be sent over HDMI cable hdmi_drive=2 # Set monitor mode to DMT hdmi_group=2 # Set monitor resolution to 1024x768 XGA 60Hz (HDMI_DMT_XGA_60) hdmi_mode=16 # Make display smaller to stop text spilling off the screen overscan_left=20 overscan_right=12 overscan_top=10 overscan_bottom=10
And here is another example file, containing extended documentation of features.
Video mode configuration
Video mode options
sdtv_mode defines the TV standard for composite output (default=0)
sdtv_mode=0 Normal NTSC sdtv_mode=1 Japanese version of NTSC – no pedestal sdtv_mode=2 Normal PAL sdtv_mode=3 Brazilian version of PAL – 525/60 rather than 625/50, different subcarrier
sdtv_aspect defines the aspect ratio for composite output (default=1)
sdtv_aspect=1 4:3 sdtv_aspect=2 14:9 sdtv_aspect=3 16:9
sdtv_disable_colourburst disables colour burst on composite output. The picture will be monochrome, but possibly sharper
sdtv_disable_colourburst=1 colour burst is disabled
hdmi_safe Use "safe mode" settings to try to boot with maximum hdmi compatibility. This is the same as the combination of: hdmi_force_hotplug=1, config_hdmi_boost=4, hdmi_group=1, hdmi_mode=1, disable_overscan=0
hdmi_safe=1
hdmi_ignore_edid Enables the ignoring of EDID/display data if your display is a crappy Chinese one
hdmi_ignore_edid=0xa5000080
hdmi_edid_file when set to 1, will read the edid data from the edid.dat file instead of from the monitor.[1]
hdmi_edid_file=1
hdmi_force_edid_audio Pretends all audio formats are supported by display, allowing passthrough of DTS/AC3 even when not reported as supported.
hdmi_force_edid_audio=1
edid_format_smart_match Allow fuzzy matching of modes described in edid. Picks the standard mode with matching resolution and closest framerate even if blanking is wrong.
edid_format_smart_match=1
hdmi_ignore_cec_init Doesn't sent initial active source message. Avoids bringing (CEC enabled) TV out of standby and channel switch when rebooting.
hdmi_ignore_cec_init=1
hdmi_ignore_cec Pretends CEC is not supported at all by TV. No CEC functions will be supported.
hdmi_ignore_cec=1
hdmi_force_hotplug Pretends HDMI hotplug signal is asserted so it appears a HDMI display is attached
hdmi_force_hotplug=1 Use HDMI mode even if no HDMI monitor is detected
hdmi_ignore_hotplug Pretends HDMI hotplug signal is not asserted so it appears a HDMI display is not attached
hdmi_ignore_hotplug=1 Use composite mode even if HDMI monitor is detected
hdmi_drive chooses between HDMI and DVI modes
hdmi_drive=1 Normal DVI mode (No sound) hdmi_drive=2 Normal HDMI mode (Sound will be sent if supported and enabled)
hdmi_group defines the HDMI type
Not specifying the group, or setting to 0 will use the preferred group reported by the edid.
hdmi_group=1 CEA hdmi_group=2 DMT
hdmi_mode defines screen resolution in CEA or DMT format
These values are valid if hdmi_group=1 (CEA) hdmi_mode=1 VGA hdmi_mode=2 480p 60Hz hdmi_mode=3 480p 60Hz H hdmi_mode=4 720p 60Hz hdmi_mode=5 1080i 60Hz hdmi_mode=6 480i 60Hz hdmi_mode=7 480i 60Hz H hdmi_mode=8 240p 60Hz hdmi_mode=9 240p 60Hz H hdmi_mode=10 480i 60Hz 4x hdmi_mode=11 480i 60Hz 4x H hdmi_mode=12 240p 60Hz 4x hdmi_mode=13 240p 60Hz 4x H hdmi_mode=14 480p 60Hz 2x hdmi_mode=15 480p 60Hz 2x H hdmi_mode=16 1080p 60Hz hdmi_mode=17 576p 50Hz hdmi_mode=18 576p 50Hz H hdmi_mode=19 720p 50Hz hdmi_mode=20 1080i 50Hz hdmi_mode=21 576i 50Hz hdmi_mode=22 576i 50Hz H hdmi_mode=23 288p 50Hz hdmi_mode=24 288p 50Hz H hdmi_mode=25 576i 50Hz 4x hdmi_mode=26 576i 50Hz 4x H hdmi_mode=27 288p 50Hz 4x hdmi_mode=28 288p 50Hz 4x H hdmi_mode=29 576p 50Hz 2x hdmi_mode=30 576p 50Hz 2x H hdmi_mode=31 1080p 50Hz hdmi_mode=32 1080p 24Hz hdmi_mode=33 1080p 25Hz hdmi_mode=34 1080p 30Hz hdmi_mode=35 480p 60Hz 4x hdmi_mode=36 480p 60Hz 4xH hdmi_mode=37 576p 50Hz 4x hdmi_mode=38 576p 50Hz 4x H hdmi_mode=39 1080i 50Hz reduced blanking hdmi_mode=40 1080i 100Hz hdmi_mode=41 720p 100Hz hdmi_mode=42 576p 100Hz hdmi_mode=43 576p 100Hz H hdmi_mode=44 576i 100Hz hdmi_mode=45 576i 100Hz H hdmi_mode=46 1080i 120Hz hdmi_mode=47 720p 120Hz hdmi_mode=48 480p 120Hz hdmi_mode=49 480p 120Hz H hdmi_mode=50 480i 120Hz hdmi_mode=51 480i 120Hz H hdmi_mode=52 576p 200Hz hdmi_mode=53 576p 200Hz H hdmi_mode=54 576i 200Hz hdmi_mode=55 576i 200Hz H hdmi_mode=56 480p 240Hz hdmi_mode=57 480p 240Hz H hdmi_mode=58 480i 240Hz hdmi_mode=59 480i 240Hz H H means 16:9 variant (of a normally 4:3 mode). 2x means pixel doubled (i.e. higher clock rate, with each pixel repeated twice) 4x means pixel quadrupled (i.e. higher clock rate, with each pixel repeated four times)
These values are valid if hdmi_group=2 (DMT) hdmi_mode=1 640x350 85Hz hdmi_mode=2 640x400 85Hz hdmi_mode=3 720x400 85Hz hdmi_mode=4 640x480 60Hz hdmi_mode=5 640x480 72Hz hdmi_mode=6 640x480 75Hz hdmi_mode=7 640x480 85Hz hdmi_mode=8 800x600 56Hz hdmi_mode=9 800x600 60Hz hdmi_mode=10 800x600 72Hz hdmi_mode=11 800x600 75Hz hdmi_mode=12 800x600 85Hz hdmi_mode=13 800x600 120Hz hdmi_mode=14 848x480 60Hz hdmi_mode=15 1024x768 43Hz DO NOT USE hdmi_mode=16 1024x768 60Hz hdmi_mode=17 1024x768 70Hz hdmi_mode=18 1024x768 75Hz hdmi_mode=19 1024x768 85Hz hdmi_mode=20 1024x768 120Hz hdmi_mode=21 1152x864 75Hz hdmi_mode=22 1280x768 reduced blanking hdmi_mode=23 1280x768 60Hz hdmi_mode=24 1280x768 75Hz hdmi_mode=25 1280x768 85Hz hdmi_mode=26 1280x768 120Hz reduced blanking hdmi_mode=27 1280x800 reduced blanking hdmi_mode=28 1280x800 60Hz hdmi_mode=29 1280x800 75Hz hdmi_mode=30 1280x800 85Hz hdmi_mode=31 1280x800 120Hz reduced blanking hdmi_mode=32 1280x960 60Hz hdmi_mode=33 1280x960 85Hz hdmi_mode=34 1280x960 120Hz reduced blanking hdmi_mode=35 1280x1024 60Hz hdmi_mode=36 1280x1024 75Hz hdmi_mode=37 1280x1024 85Hz hdmi_mode=38 1280x1024 120Hz reduced blanking hdmi_mode=39 1360x768 60Hz hdmi_mode=40 1360x768 120Hz reduced blanking hdmi_mode=41 1400x1050 reduced blanking hdmi_mode=42 1400x1050 60Hz hdmi_mode=43 1400x1050 75Hz hdmi_mode=44 1400x1050 85Hz hdmi_mode=45 1400x1050 120Hz reduced blanking hdmi_mode=46 1440x900 reduced blanking hdmi_mode=47 1440x900 60Hz hdmi_mode=48 1440x900 75Hz hdmi_mode=49 1440x900 85Hz hdmi_mode=50 1440x900 120Hz reduced blanking hdmi_mode=51 1600x1200 60Hz hdmi_mode=52 1600x1200 65Hz hdmi_mode=53 1600x1200 70Hz hdmi_mode=54 1600x1200 75Hz hdmi_mode=55 1600x1200 85Hz hdmi_mode=56 1600x1200 120Hz reduced blanking hdmi_mode=57 1680x1050 reduced blanking hdmi_mode=58 1680x1050 60Hz hdmi_mode=59 1680x1050 75Hz hdmi_mode=60 1680x1050 85Hz hdmi_mode=61 1680x1050 120Hz reduced blanking hdmi_mode=62 1792x1344 60Hz hdmi_mode=63 1792x1344 75Hz hdmi_mode=64 1792x1344 120Hz reduced blanking hdmi_mode=65 1856x1392 60Hz hdmi_mode=66 1856x1392 75Hz hdmi_mode=67 1856x1392 120Hz reduced blanking hdmi_mode=68 1920x1200 reduced blanking hdmi_mode=69 1920x1200 60Hz hdmi_mode=70 1920x1200 75Hz hdmi_mode=71 1920x1200 85Hz hdmi_mode=72 1920x1200 120Hz reduced blanking hdmi_mode=73 1920x1440 60Hz hdmi_mode=74 1920x1440 75Hz hdmi_mode=75 1920x1440 120Hz reduced blanking hdmi_mode=76 2560x1600 reduced blanking hdmi_mode=77 2560x1600 60Hz hdmi_mode=78 2560x1600 75Hz hdmi_mode=79 2560x1600 85Hz hdmi_mode=80 2560x1600 120Hz reduced blanking hdmi_mode=81 1366x768 60Hz hdmi_mode=82 1080p 60Hz hdmi_mode=83 1600x900 reduced blanking hdmi_mode=84 2048x1152 reduced blanking hdmi_mode=85 720p 60Hz hdmi_mode=86 1366x768 reduced blanking
overscan_left number of pixels to skip on left
overscan_right number of pixels to skip on right
overscan_top number of pixels to skip on top
overscan_bottom number of pixels to skip on bottom
framebuffer_width console framebuffer width in pixels. Default is display width minus overscan.
framebuffer_height console framebuffer height in pixels. Default is display height minus overscan.
framebuffer_depth console framebuffer depth in bits per pixel. Default is 16. 8bit is valid, but default RGB palette makes an unreadable screen. 24bit looks better but has corruption issues as of 20120615. 32bit has no corruption issues but needs framebuffer_ignore_alpha=1 and shows the wrong colors as of 20120615.
framebuffer_ignore_alpha set to 1 to disable alpha channel. Helps with 32bit.
test_mode enable test sound/image during boot for manufacturing test.
disable_l2cache disable arm access to GPU's L2 cache. Needs corresponding L2 disabled kernel. Default is 0.
disable_overscan set to 1 to disable overscan.
config_hdmi_boost configure the signal strength of the HDMI interface. Default is 0. Try 4 if you have interference issues with hdmi. 7 is the maximum.
display_rotate rotates the display clockwise on the screen (default=0)
display_rotate=0 Normal display_rotate=1 90 degrees display_rotate=2 180 degrees display_rotate=3 270 degrees
- Crashes my RPI before Linux boots if set to "1" -- REW 20120913.
Which values are valid for my monitor?
Your HDMI monitor may support only a limited set of formats. To find out which formats are supported, use the following method.
- Set the output format to VGA 60Hz (hdmi_group=1 hdmi_mode=1) and boot up the Raspberry Pi
- Enter the following command to give a list of CEA supported modes
/opt/vc/bin/tvservice -m CEA
- Enter the following command to give a list of DMT supported modes
/opt/vc/bin/tvservice -m DMT
- Enter the following command to show your current state
/opt/vc/bin/tvservice -s
- Enter the following commands to dump more detailed information from your monitor
/opt/vc/bin/tvservice -d edid.dat /opt/vc/bin/edidparser edid.dat
The edid.dat should also be provided when troubleshooting problems with the default HDMI mode
Licensed Codecs
Hardware decoding of additional codecs can be enabled by purchasing a license that is locked to the CPU serial number of your Raspberry Pi.
decode_MPG2 License key to allow hardware MPEG-2 decoding.
decode_MPG2=0x12345678
decode_WVC1 License key to allow hardware VC-1 decoding.
decode_WVC1=0x12345678
License setup for SD-card sharing between multiple Pis. Maximum of 8 licenses at once.
decode_XXXX=0x12345678,0xabcdabcd,0x87654321,...
Boot options
disable_commandline_tags stop start.elf from filling in ATAGS (memory from 0x100) before launching kernel
cmdline (string) command line parameters. Can be used instead of cmdline.txt file
kernel (string) alternative name to use when loading kernel. Default "kernel.img"
kernel_address address to load kernel.img file at
ramfsfile (string) ramfs file to load
ramfsaddr address to load ramfs file at
initramfs (string address) ramfs file and adress to load it at (it's like ramfsfile+ramfsaddr in one option). NOTE: this option uses different syntax than all other options - you should not use "=" character here. Example:
initramfs initramf.gz 0x00800000
device_tree_address address to load device_tree at
init_uart_baud initial uart baud rate. Default 115200
init_uart_clock initial uart clock. Default 3000000 (3Mhz)
init_emmc_clock initial emmc clock. Default 50000000 (50MHz)
boot_delay wait for given number of seconds in start.elf before loading kernel. delay = 1000 * boot_delay + boot_delay_ms. Default 1
boot_delay_ms wait for given number of milliseconds in start.elf before loading kernel. Default 0
avoid_safe_mode if set to 1, safe_mode boot won't be enabled. Default 0
Overclocking configuration
WARNING: Setting any of the parameters which overvolt your Raspberry Pi will set a permanent bit within the SOC and your warranty is void. So If you care about the warranty do not adjust voltage.
The latest kernel has a cpufreq kernel driver with the "ondemand" governor enabled by default. It has no effect if you have no overclock settings. But when you do, the arm frequency will vary with processor load. Non default values are only used when needed accourding to the used governor. You can adjust the minimum values with the *_min config options or disable dynamic clocking with force_turbo=1. [2]
Overclock and overvoltage will be disabled at runtime when the SoC reaches 85°C to cool it down . You should not hit the limit, even with maximum settings at 25°C ambient temperature. [3]
Also at your own risk you can try overscan settings from our wiki. These were posted on the forum and are not confimed to work.
Overclocking options
Option | Description |
---|---|
arm_freq | Frequency of ARM in MHz. Default 700 |
gpu_freq | Sets core_freq, h264_freq, isp_freq, v3d_freq together. Default 250 |
core_freq | Frequency of GPU processor core in MHz. It have an impact on ARM performance since it drives L2 cache. Default 250 |
h264_freq | Frequency of hardware video block in MHz. Default 250 |
isp_freq | Frequency of image sensor pipeline block in MHz. Default 250 |
v3d_freq | Frequency of 3D block in MHz. Default 250 |
avoid_pwm_pll | Unlink core_freq from the rest of the gpu. Can cause low quality analog audio, which should be fixed with latest firmware. Default 0 |
sdram_freq | Frequency of SDRAM in MHz. Default 400 |
over_voltage | ARM/GPU core voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. force_turbo will allow values higher than 6. Default 0 (1.2V) [4] |
over_voltage_sdram | Sets over_voltage_sdram_c, over_voltage_sdram_i, over_voltage_sdram_p together |
over_voltage_sdram_c | SDRAM controller voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. Default 0 (1.2V) [4] |
over_voltage_sdram_i | SDRAM I/O voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. Default 0 (1.2V)[4] |
over_voltage_sdram_p | SDRAM phy voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. Default 0 (1.2V)[4] |
force_turbo | Disables dynamic cpufreq driver and minimum settings below. Enables h264/v3d/isp overclock options. Default 0 |
arm_freq_min | Minimum value of arm_freq used for dynamic clocking. Default 700 |
core_freq_min | Minimum value of core_freq used for dynamic clocking. Default 250 |
sdram_freq_min | Minimum value of sdram_freq used for dynamic clocking. Default 400 |
over_voltage_min | Minimum value of over_voltage used for dynamic clocking. Default 0 |
temp_limit | Overheat protection. Sets clocks and voltages to default when the SoC reaches this Celsius value. Setting this higher than default voids warranty. Default 85 |
force_turbo mode
force_turbo=0
enables dynamic clocks and voltage for the ARM core, GPU core and SDRAM. When busy, ARM frequency go up to "arm_freq" and down to "arm_freq_min" on idle. "core_freq", "sdram_freq" and "over_voltage" behave the same. "over_voltage" is limited to 6 (1.35V). Non default values for the h264/v3d/isp parts are ignored.
force_turbo=1
disables dynamic clocking, so all frequencies and voltages stay high. Overclocking of h264/v3d/isp GPU parts is allowed as well as setting "over_voltage" to 8 (1.4V). [5]
Clocks relationship
The GPU core, h264, v3d and isp share a PLL, so need to have related frequencies. ARM, SDRAM and GPU each have their own PLLs and can have unrelated frequencies[6].
The following is not necessary with "avoid_pwm_pll=1".
For firmware before 5. Sep. 2012
PLL will be set to: pll_freq = core_freq * 2^n, for smallest n satisfying pll_freq > 600MHz.
GPU core, h264, v3d and isp should all be integer divisors of pll_freq. So core_freq=480 sets pll_freq=960. That would allow a v3d_freq/h264_freq/v3d_freq of 320 with an integer divider of 3.
For firmware after 5. Sep. 2012
The latest firmware has a different behaviour [7].
pll_freq = floor(2400 / (2 * core_freq)) * (2 * core_freq) gpu_freq = pll_freq / [even number]
The effective gpu_freq is automatically rounded to nearest even integer, so asking for core_freq=500 and gpu_freq=300 will result in divisor of 2000/300 = 6.666 => 6 and so 333.33MHz.
Tested values
The following table shows some successfull attempts of overclocking, which can be used for orientation. These settings may not work on every device and can shorten the lifetime of the Broadcom SoC.
Warning: Warranty will be voided if overvoltage is used!
arm_freq | gpu_freq | core_freq | h264_freq | isp_freq | v3d_freq | sdram_freq | over_voltage | over_voltage_sdram |
---|---|---|---|---|---|---|---|---|
800 | ||||||||
900 | 275 | 500 | ||||||
900 | 450 | 450 | ||||||
930 | 350 | 500 | ||||||
1000 | 500 | 500 | 6 | |||||
1050 | 6 | |||||||
1150 | 500 | 600 | 8 |
There are reports that Hynix RAM is not as good as Samsung RAM for overclocking.
other options
The following strings were extracted from the GPU bootcode, and look like they might be options. There is no guarantee that they ARE options for rpi_config.txt. This list is intended to contain just the options not documented above, but may contain oversights. If you see an option listed that is documented above, please remove it from this list. If you have some time on your hands you might be able to figure out what some of these options do, and document them above.
add_device alloc_logical_address aplay_ ap_output_control ap_output_post_processing arec_ arm_control arm_freq arm_freq_min audio_ audio_close audio_dummy audioplus_post_proc audioplus_tmp_buf audio_properties audio_server avoid_edid_fuzzy_match avoid_pwm_pll avoid_safe_mode backlight_dummy bmpdec_open bmp_tmp boot_delay boot_signing_enable boot_signing_key0 boot_signing_key1 boot_signing_key2 boot_signing_key3 boot_signing_key_enable cache_flush cec_init cec_osd_name cec_ready change_mode check_ksv_list_handler check_mask codec_enabled config_hdmi_boost config_hdmi_preemphasis consumed_input copy_file core_freq core_freq_min current_limit_override current_logging_level ddc_read deregister_all deregister_command device_tree device_tree_address disable_commandline_tags disable_copy_protect disable_l2cache disable_l2cache_writealloc disable_overscan disable_pvt disable_splash disk_notify display_rotate display_update dispmanx_resource dma_transfer_xfers edid_content_type egl_platform_switch emit_output enable_copy_protect enable_hdmi_status end_of_list exchange_ksvs_handler fail_on_check filesys_close_disk_raw filesys_open_disk_raw filter_description filter_task_name force_turbo framebuffer_align framebuffer_depth framebuffer_height framebuffer_ignore_alpha framebuffer_width frequency_deviation_ppm fs_close_disk fs_open_disk fsys_drvtbl fsys_sem g_camera_pool_size g_camera_pool_start g_chunk_size g_codec_pool_size g_codec_pool_start gencmd_file general_encrypted_handler get_audio_plugin_func_table get_img_dec_func_table get_img_enc_func_table get_info get_lcd_info get_logical_address get_physical_address get_play_buffer_driver_func_table get_property get_record_buffer_driver_func_table get_state get_topology get_vendor_id get_vid_dec_func_table get_vid_enc_func_table '_ g&l g_legacy_blocks g_mgr g_num_chunks g_num_chunks_offline g_offline_map gpio_pads0 gpio_pads2 gpio_pads3 gpio_pads4 gpio_pads5 gpu_freq gpu_freq_min g_smallallocs g_smallallocs_free_handle g_smallallocs_num_handles g_sysman_domains g_tasklogend g_tasklogstart h264_freq h264_freq_min handle_error_ haud_proc hdcp_off hdcp_on hdcp_set_key hdcp_set_revoke_list hdmi_boost hdmi_clock_change_limit hdmi_clock_spreading hdmi_control_gpio hdmi_drive hdmi_edid_file hdmi_force_edid_audio hdmi_force_hotplug hdmi_get_av_latency hdmi_group hdmi_ignore_cec hdmi_ignore_cec_init hdmi_ignore_edid hdmi_ignore_hotplug hdmi_mode hdmi_ntsc_freqs hdmi_pixel_clock_type hdmi_pixel_encoding hdmi_pixel_freq_limit hdmi_power_on_best hdmi_power_on_explicit hdmi_power_on_preferred hdmi_query_audio_support hdmi_query_mode_support hdmi_query_supported_modes hdmi_safe hdmi_set_display_options hdmi_set_spd hp_detect hvs_swap_red_blue imageconv_stats init_emmc_clock init_uart_baud init_uart_clock inuse_notify isp_freq isp_freq_min jpe_exif kernel_address kernel_old led_control led_gpio logging_force logging_level log_level_overrides mask_3d max_non_pll_freq max_sdram_freq mbox_read measure_clock measure_temp measure_volts mem_timo message_handler modulation_frequency_hz multicore_sync _mwhsegment_chain ^_$n never_over_voltage __o2 otp_dump otp_key overscan_bottom overscan_left overscan_right overscan_scale overscan_top over_voltage over_voltage_min over_voltage_sdram over_voltage_sdram_c over_voltage_sdram_c_min over_voltage_sdram_i over_voltage_sdram_i_min over_voltage_sdram_min over_voltage_sdram_p over_voltage_sdram_p_min play_local_close play_local_flush pm_get_status pm_set_policy pm_show_stats pm_start_logging pm_stop_logging poll_address powerman_check_for_pvt_cal powerman_initialise powerman_process_statemachine powerman_stop_logging power_off program_board_rev program_bootrom program_serial_number program_serial_random raspberrypi_linux reaper_sem register_all register_command release_logical_address render_bar resource_logging ril_create safe_mode sdcard_control sdram_c sdram_freq sdram_freq_min sdram_i sdram_p sdtv_aspect sdtv_disable_colourburst sdtv_mode sdtv_power_on send_message set_attached set_backlight set_bus_arbiter_mode set_logging set_logical_address set_osd_name set_passive set_property set_vendor_id set_vll_dir show_info spread_spectrum_enable start_3d_mode start_mode stop_3d_mode sus_is_enabled sus_status sus_stop_test_thread sus_suspend sysman_initialise tasklog_cpu_count tasklogend_offset tasklogstart_offset temp_check temp_limit test_mode test_mode_start test_mode_stop threadx_open_disk total_checks tv_server _tx_thread_created_next_offset _tx_thread_created_ptr _tx_thread_name_offset usb_control_dummy v3d_freq v3d_freq_min validating_handler vchiq_core vchiq_core_msg vchiq_shim vchiq_vc vchiu_queue_init vcos_build_date vcos_build_hostname vcos_build_time vcos_build_version vcos_cmd vcos_cmd_entries vcos_llthread_size vc_pool_max_handles vc_pool_remote vctest_get vctest_memmap vctest_set vctest_start vctest_stop wait_for_active_rx_handler wait_for_ksv_list_handler
References
- ↑ http://www.raspberrypi.org/phpBB3/viewtopic.php?p=173430#p173430
- ↑ http://www.raspberrypi.org/phpBB3/viewtopic.php?p=169726#p169726
- ↑ http://www.raspberrypi.org/phpBB3/viewtopic.php?f=29&t=11579#p169872
- ↑ 4.0 4.1 4.2 4.3 What this means is that you can specify -16 and expect about 0.8V as the GPU/core voltage. This is 0.4V below the normal value of 1.2. If you specify 16, you'd get 0.4V ABOVE the normal value of 1.2V, or 1.6V. The fact that someone carefully specified "8" and "1.4V" as the upper limit in the examples leads me to think that it is likely to shorten the life of your raspberry pi significantly if you would specify values above "8". So: don't specify values above zero, but if you do, don't go above 8.
- ↑ http://www.raspberrypi.org/phpBB3/viewtopic.php?f=29&t=6201&sid=852d546291ae711ffcd8bf23d3214581&start=325#p170793
- ↑ http://www.raspberrypi.org/phpBB3/viewtopic.php?f=29&t=6201&start=125#p126308
- ↑ http://www.raspberrypi.org/phpBB3/viewtopic.php?f=29&t=6201&start=275#p168042
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