| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104 |
- Kernel driver ltc2978
- =====================
- Supported chips:
- * Linear Technology LTC2978
- Prefix: 'ltc2978'
- Addresses scanned: -
- Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf
- * Linear Technology LTC3880
- Prefix: 'ltc3880'
- Addresses scanned: -
- Datasheet: http://cds.linear.com/docs/Datasheet/3880f.pdf
- Author: Guenter Roeck <guenter.roeck@ericsson.com>
- Description
- -----------
- The LTC2978 is an octal power supply monitor, supervisor, sequencer and
- margin controller. The LTC3880 is a dual, PolyPhase DC/DC synchronous
- step-down switching regulator controller.
- Usage Notes
- -----------
- This driver does not probe for PMBus devices. You will have to instantiate
- devices explicitly.
- Example: the following commands will load the driver for an LTC2978 at address
- 0x60 on I2C bus #1:
- # modprobe ltc2978
- # echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device
- Sysfs attributes
- ----------------
- in1_label "vin"
- in1_input Measured input voltage.
- in1_min Minimum input voltage.
- in1_max Maximum input voltage.
- in1_lcrit Critical minimum input voltage.
- in1_crit Critical maximum input voltage.
- in1_min_alarm Input voltage low alarm.
- in1_max_alarm Input voltage high alarm.
- in1_lcrit_alarm Input voltage critical low alarm.
- in1_crit_alarm Input voltage critical high alarm.
- in1_lowest Lowest input voltage. LTC2978 only.
- in1_highest Highest input voltage.
- in1_reset_history Reset history. Writing into this attribute will reset
- history for all attributes.
- in[2-9]_label "vout[1-8]". Channels 3 to 9 on LTC2978 only.
- in[2-9]_input Measured output voltage.
- in[2-9]_min Minimum output voltage.
- in[2-9]_max Maximum output voltage.
- in[2-9]_lcrit Critical minimum output voltage.
- in[2-9]_crit Critical maximum output voltage.
- in[2-9]_min_alarm Output voltage low alarm.
- in[2-9]_max_alarm Output voltage high alarm.
- in[2-9]_lcrit_alarm Output voltage critical low alarm.
- in[2-9]_crit_alarm Output voltage critical high alarm.
- in[2-9]_lowest Lowest output voltage. LTC2978 only.
- in[2-9]_highest Lowest output voltage.
- in[2-9]_reset_history Reset history. Writing into this attribute will reset
- history for all attributes.
- temp[1-3]_input Measured temperature.
- On LTC2978, only one temperature measurement is
- supported and reflects the internal temperature.
- On LTC3880, temp1 and temp2 report external
- temperatures, and temp3 reports the internal
- temperature.
- temp[1-3]_min Mimimum temperature.
- temp[1-3]_max Maximum temperature.
- temp[1-3]_lcrit Critical low temperature.
- temp[1-3]_crit Critical high temperature.
- temp[1-3]_min_alarm Chip temperature low alarm.
- temp[1-3]_max_alarm Chip temperature high alarm.
- temp[1-3]_lcrit_alarm Chip temperature critical low alarm.
- temp[1-3]_crit_alarm Chip temperature critical high alarm.
- temp[1-3]_lowest Lowest measured temperature. LTC2978 only.
- temp[1-3]_highest Highest measured temperature.
- temp[1-3]_reset_history Reset history. Writing into this attribute will reset
- history for all attributes.
- power[1-2]_label "pout[1-2]". LTC3880 only.
- power[1-2]_input Measured power.
- curr1_label "iin". LTC3880 only.
- curr1_input Measured input current.
- curr1_max Maximum input current.
- curr1_max_alarm Input current high alarm.
- curr[2-3]_label "iout[1-2]". LTC3880 only.
- curr[2-3]_input Measured input current.
- curr[2-3]_max Maximum input current.
- curr[2-3]_crit Critical input current.
- curr[2-3]_max_alarm Input current high alarm.
- curr[2-3]_crit_alarm Input current critical high alarm.
|
