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diff --git a/Documentation/hwmon/asc7621 b/Documentation/hwmon/asc7621 deleted file mode 100644 index 7287be7e1f21..000000000000 --- a/Documentation/hwmon/asc7621 +++ /dev/null @@ -1,296 +0,0 @@ -Kernel driver asc7621 -================== - -Supported chips: - Andigilog aSC7621 and aSC7621a - Prefix: 'asc7621' - Addresses scanned: I2C 0x2c, 0x2d, 0x2e - Datasheet: http://www.fairview5.com/linux/asc7621/asc7621.pdf - -Author: - George Joseph - -Description provided by Dave Pivin @ Andigilog: - -Andigilog has both the PECI and pre-PECI versions of the Heceta-6, as -Intel calls them. Heceta-6e has high frequency PWM and Heceta-6p has -added PECI and a 4th thermal zone. The Andigilog aSC7611 is the -Heceta-6e part and aSC7621 is the Heceta-6p part. They are both in -volume production, shipping to Intel and their subs. - -We have enhanced both parts relative to the governing Intel -specification. First enhancement is temperature reading resolution. We -have used registers below 20h for vendor-specific functions in addition -to those in the Intel-specified vendor range. - -Our conversion process produces a result that is reported as two bytes. -The fan speed control uses this finer value to produce a "step-less" fan -PWM output. These two bytes are "read-locked" to guarantee that once a -high or low byte is read, the other byte is locked-in until after the -next read of any register. So to get an atomic reading, read high or low -byte, then the very next read should be the opposite byte. Our data -sheet says 10-bits of resolution, although you may find the lower bits -are active, they are not necessarily reliable or useful externally. We -chose not to mask them. - -We employ significant filtering that is user tunable as described in the -data sheet. Our temperature reports and fan PWM outputs are very smooth -when compared to the competition, in addition to the higher resolution -temperature reports. The smoother PWM output does not require user -intervention. - -We offer GPIO features on the former VID pins. These are open-drain -outputs or inputs and may be used as general purpose I/O or as alarm -outputs that are based on temperature limits. These are in 19h and 1Ah. - -We offer flexible mapping of temperature readings to thermal zones. Any -temperature may be mapped to any zone, which has a default assignment -that follows Intel's specs. - -Since there is a fan to zone assignment that allows for the "hotter" of -a set of zones to control the PWM of an individual fan, but there is no -indication to the user, we have added an indicator that shows which zone -is currently controlling the PWM for a given fan. This is in register -00h. - -Both remote diode temperature readings may be given an offset value such -that the reported reading as well as the temperature used to determine -PWM may be offset for system calibration purposes. - -PECI Extended configuration allows for having more than two domains per -PECI address and also provides an enabling function for each PECI -address. One could use our flexible zone assignment to have a zone -assigned to up to 4 PECI addresses. This is not possible in the default -Intel configuration. This would be useful in multi-CPU systems with -individual fans on each that would benefit from individual fan control. -This is in register 0Eh. - -The tachometer measurement system is flexible and able to adapt to many -fan types. We can also support pulse-stretched PWM so that 3-wire fans -may be used. These characteristics are in registers 04h to 07h. - -Finally, we have added a tach disable function that turns off the tach -measurement system for individual tachs in order to save power. That is -in register 75h. - --- -aSC7621 Product Description - -The aSC7621 has a two wire digital interface compatible with SMBus 2.0. -Using a 10-bit ADC, the aSC7621 measures the temperature of two remote diode -connected transistors as well as its own die. Support for Platform -Environmental Control Interface (PECI) is included. - -Using temperature information from these four zones, an automatic fan speed -control algorithm is employed to minimize acoustic impact while achieving -recommended CPU temperature under varying operational loads. - -To set fan speed, the aSC7621 has three independent pulse width modulation -(PWM) outputs that are controlled by one, or a combination of three, -temperature zones. Both high- and low-frequency PWM ranges are supported. - -The aSC7621 also includes a digital filter that can be invoked to smooth -temperature readings for better control of fan speed and minimum acoustic -impact. - -The aSC7621 has tachometer inputs to measure fan speed on up to four fans. -Limit and status registers for all measured values are included to alert -the system host that any measurements are outside of programmed limits -via status registers. - -System voltages of VCCP, 2.5V, 3.3V, 5.0V, and 12V motherboard power are -monitored efficiently with internal scaling resistors. - -Features -- Supports PECI interface and monitors internal and remote thermal diodes -- 2-wire, SMBus 2.0 compliant, serial interface -- 10-bit ADC -- Monitors VCCP, 2.5V, 3.3V, 5.0V, and 12V motherboard/processor supplies -- Programmable autonomous fan control based on temperature readings -- Noise filtering of temperature reading for fan speed control -- 0.25C digital temperature sensor resolution -- 3 PWM fan speed control outputs for 2-, 3- or 4-wire fans and up to 4 fan - tachometer inputs -- Enhanced measured temperature to Temperature Zone assignment. -- Provides high and low PWM frequency ranges -- 3 GPIO pins for custom use -- 24-Lead QSOP package - -Configuration Notes -=================== - -Except where noted below, the sysfs entries created by this driver follow -the standards defined in "sysfs-interface". - -temp1_source - 0 (default) peci_legacy = 0, Remote 1 Temperature - peci_legacy = 1, PECI Processor Temperature 0 - 1 Remote 1 Temperature - 2 Remote 2 Temperature - 3 Internal Temperature - 4 PECI Processor Temperature 0 - 5 PECI Processor Temperature 1 - 6 PECI Processor Temperature 2 - 7 PECI Processor Temperature 3 - -temp2_source - 0 (default) Internal Temperature - 1 Remote 1 Temperature - 2 Remote 2 Temperature - 3 Internal Temperature - 4 PECI Processor Temperature 0 - 5 PECI Processor Temperature 1 - 6 PECI Processor Temperature 2 - 7 PECI Processor Temperature 3 - -temp3_source - 0 (default) Remote 2 Temperature - 1 Remote 1 Temperature - 2 Remote 2 Temperature - 3 Internal Temperature - 4 PECI Processor Temperature 0 - 5 PECI Processor Temperature 1 - 6 PECI Processor Temperature 2 - 7 PECI Processor Temperature 3 - -temp4_source - 0 (default) peci_legacy = 0, PECI Processor Temperature 0 - peci_legacy = 1, Remote 1 Temperature - 1 Remote 1 Temperature - 2 Remote 2 Temperature - 3 Internal Temperature - 4 PECI Processor Temperature 0 - 5 PECI Processor Temperature 1 - 6 PECI Processor Temperature 2 - 7 PECI Processor Temperature 3 - -temp[1-4]_smoothing_enable -temp[1-4]_smoothing_time - Smooths spikes in temp readings caused by noise. - Valid values in milliseconds are: - 35000 - 17600 - 11800 - 7000 - 4400 - 3000 - 1600 - 800 - -temp[1-4]_crit - When the corresponding zone temperature reaches this value, - ALL pwm outputs will got to 100%. - -temp[5-8]_input -temp[5-8]_enable - The aSC7621 can also read temperatures provided by the processor - via the PECI bus. Usually these are "core" temps and are relative - to the point where the automatic thermal control circuit starts - throttling. This means that these are usually negative numbers. - -pwm[1-3]_enable - 0 Fan off. - 1 Fan on manual control. - 2 Fan on automatic control and will run at the minimum pwm - if the temperature for the zone is below the minimum. - 3 Fan on automatic control but will be off if the temperature - for the zone is below the minimum. - 4-254 Ignored. - 255 Fan on full. - -pwm[1-3]_auto_channels - Bitmap as described in sysctl-interface with the following - exceptions... - Only the following combination of zones (and their corresponding masks) - are valid: - 1 - 2 - 3 - 2,3 - 1,2,3 - 4 - 1,2,3,4 - - Special values: - 0 Disabled. - 16 Fan on manual control. - 31 Fan on full. - - -pwm[1-3]_invert - When set, inverts the meaning of pwm[1-3]. - i.e. when pwm = 0, the fan will be on full and - when pwm = 255 the fan will be off. - -pwm[1-3]_freq - PWM frequency in Hz - Valid values in Hz are: - - 10 - 15 - 23 - 30 (default) - 38 - 47 - 62 - 94 - 23000 - 24000 - 25000 - 26000 - 27000 - 28000 - 29000 - 30000 - - Setting any other value will be ignored. - -peci_enable - Enables or disables PECI - -peci_avg - Input filter average time. - - 0 0 Sec. (no Smoothing) (default) - 1 0.25 Sec. - 2 0.5 Sec. - 3 1.0 Sec. - 4 2.0 Sec. - 5 4.0 Sec. - 6 8.0 Sec. - 7 0.0 Sec. - -peci_legacy - - 0 Standard Mode (default) - Remote Diode 1 reading is associated with - Temperature Zone 1, PECI is associated with - Zone 4 - - 1 Legacy Mode - PECI is associated with Temperature Zone 1, - Remote Diode 1 is associated with Zone 4 - -peci_diode - Diode filter - - 0 0.25 Sec. - 1 1.1 Sec. - 2 2.4 Sec. (default) - 3 3.4 Sec. - 4 5.0 Sec. - 5 6.8 Sec. - 6 10.2 Sec. - 7 16.4 Sec. - -peci_4domain - Four domain enable - - 0 1 or 2 Domains for enabled processors (default) - 1 3 or 4 Domains for enabled processors - -peci_domain - Domain - - 0 Processor contains a single domain (0) (default) - 1 Processor contains two domains (0,1) |