diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/asc7621 | 146 |
1 files changed, 88 insertions, 58 deletions
diff --git a/Documentation/hwmon/asc7621 b/Documentation/hwmon/asc7621 index 7287be7e1f21..b5a9fad0f172 100644 --- a/Documentation/hwmon/asc7621 +++ b/Documentation/hwmon/asc7621 @@ -1,10 +1,15 @@ +===================== 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: @@ -73,8 +78,10 @@ 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 @@ -102,6 +109,8 @@ 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 @@ -110,7 +119,7 @@ Features - 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 + tachometer inputs - Enhanced measured temperature to Temperature Zone assignment. - Provides high and low PWM frequency ranges - 3 GPIO pins for custom use @@ -123,17 +132,20 @@ 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 + 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 + 7 PECI Processor Temperature 3 + = =============================================== temp2_source + = =============================================== 0 (default) Internal Temperature 1 Remote 1 Temperature 2 Remote 2 Temperature @@ -142,8 +154,10 @@ temp2_source 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 @@ -152,10 +166,12 @@ temp3_source 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 + peci_legacy = 1, Remote 1 Temperature 1 Remote 1 Temperature 2 Remote 2 Temperature 3 Internal Temperature @@ -163,58 +179,65 @@ temp4_source 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 +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 + + * 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 +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. + 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. + * 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 @@ -226,22 +249,22 @@ 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 + * 10 + * 15 + * 23 + * 30 (default) + * 38 + * 47 + * 62 + * 94 + * 23000 + * 24000 + * 25000 + * 26000 + * 27000 + * 28000 + * 29000 + * 30000 Setting any other value will be ignored. @@ -251,17 +274,17 @@ peci_enable 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. + * 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 @@ -270,10 +293,12 @@ peci_legacy 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) @@ -282,15 +307,20 @@ peci_diode 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) + = ================================================== |