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Diffstat (limited to 'Documentation/hwmon/adm9240')
| -rw-r--r-- | Documentation/hwmon/adm9240 | 50 |
1 files changed, 37 insertions, 13 deletions
diff --git a/Documentation/hwmon/adm9240 b/Documentation/hwmon/adm9240 index 9b174fc700cc..91063b0f4c6f 100644 --- a/Documentation/hwmon/adm9240 +++ b/Documentation/hwmon/adm9240 @@ -2,30 +2,43 @@ Kernel driver adm9240 ===================== Supported chips: + * Analog Devices ADM9240 + Prefix: 'adm9240' + Addresses scanned: I2C 0x2c - 0x2f + Datasheet: Publicly available at the Analog Devices website - http://www.analog.com/UploadedFiles/Data_Sheets/79857778ADM9240_0.pdf + + http://www.analog.com/UploadedFiles/Data_Sheets/79857778ADM9240_0.pdf * Dallas Semiconductor DS1780 + Prefix: 'ds1780' + Addresses scanned: I2C 0x2c - 0x2f + Datasheet: Publicly available at the Dallas Semiconductor (Maxim) website - http://pdfserv.maxim-ic.com/en/ds/DS1780.pdf + + http://pdfserv.maxim-ic.com/en/ds/DS1780.pdf * National Semiconductor LM81 + Prefix: 'lm81' + Addresses scanned: I2C 0x2c - 0x2f + Datasheet: Publicly available at the National Semiconductor website - http://www.national.com/ds.cgi/LM/LM81.pdf + + http://www.national.com/ds.cgi/LM/LM81.pdf Authors: - Frodo Looijaard <frodol@dds.nl>, - Philip Edelbrock <phil@netroedge.com>, - Michiel Rook <michiel@grendelproject.nl>, - Grant Coady <gcoady.lk@gmail.com> with guidance - from Jean Delvare <jdelvare@suse.de> + - Frodo Looijaard <frodol@dds.nl>, + - Philip Edelbrock <phil@netroedge.com>, + - Michiel Rook <michiel@grendelproject.nl>, + - Grant Coady <gcoady.lk@gmail.com> with guidance + from Jean Delvare <jdelvare@suse.de> Interface --------- @@ -87,11 +100,13 @@ rpm = (22500 * 60) / (count * divider) Automatic fan clock divider * User sets 0 to fan_min limit + - low speed alarm is disabled - fan clock divider not changed - auto fan clock adjuster enabled for valid fan speed reading * User sets fan_min limit too low + - low speed alarm is enabled - fan clock divider set to max - fan_min set to register value 254 which corresponds @@ -101,18 +116,20 @@ Automatic fan clock divider - auto fan clock adjuster disabled * User sets reasonable fan speed + - low speed alarm is enabled - fan clock divider set to suit fan_min - auto fan clock adjuster enabled: adjusts fan_min * User sets unreasonably high low fan speed limit + - resolution of the low speed limit may be reduced - alarm will be asserted - auto fan clock adjuster enabled: adjusts fan_min - * fan speed may be displayed as zero until the auto fan clock divider - adjuster brings fan speed clock divider back into chip measurement - range, this will occur within a few measurement cycles. + * fan speed may be displayed as zero until the auto fan clock divider + adjuster brings fan speed clock divider back into chip measurement + range, this will occur within a few measurement cycles. Analog Output ------------- @@ -122,16 +139,21 @@ power up or reset. This doesn't do much on the test Intel SE440BX-2. Voltage Monitor +^^^^^^^^^^^^^^^ + Voltage (IN) measurement is internally scaled: + === =========== =========== ========= ========== nr label nominal maximum resolution - mV mV mV + mV mV mV + === =========== =========== ========= ========== 0 +2.5V 2500 3320 13.0 1 Vccp1 2700 3600 14.1 2 +3.3V 3300 4380 17.2 3 +5V 5000 6640 26.0 4 +12V 12000 15940 62.5 5 Vccp2 2700 3600 14.1 + === =========== =========== ========= ========== The reading is an unsigned 8-bit value, nominal voltage measurement is represented by a reading of 192, being 3/4 of the measurement range. @@ -159,8 +181,9 @@ Clear the CI latch by writing value 0 to the sysfs intrusion0_alarm file. Alarm flags reported as 16-bit word + === ============= ========================== bit label comment - --- ------------- -------------------------- + === ============= ========================== 0 +2.5 V_Error high or low limit exceeded 1 VCCP_Error high or low limit exceeded 2 +3.3 V_Error high or low limit exceeded @@ -171,6 +194,7 @@ Alarm flags reported as 16-bit word 8 +12 V_Error high or low limit exceeded 9 VCCP2_Error high or low limit exceeded 12 Chassis_Error CI pin went high + === ============= ========================== Remaining bits are reserved and thus undefined. It is important to note that alarm bits may be cleared on read, user-space may latch alarms and |