ltc4215 1.2 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950
  1. Kernel driver ltc4215
  2. =====================
  3. Supported chips:
  4. * Linear Technology LTC4215
  5. Prefix: 'ltc4215'
  6. Addresses scanned: 0x44
  7. Datasheet:
  8. http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1006,C1163,P17572,D12697
  9. Author: Ira W. Snyder <iws@ovro.caltech.edu>
  10. Description
  11. -----------
  12. The LTC4215 controller allows a board to be safely inserted and removed
  13. from a live backplane.
  14. Usage Notes
  15. -----------
  16. This driver does not probe for LTC4215 devices, due to the fact that some
  17. of the possible addresses are unfriendly to probing. You will need to use
  18. the "force" parameter to tell the driver where to find the device.
  19. Example: the following will load the driver for an LTC4215 at address 0x44
  20. on I2C bus #0:
  21. $ modprobe ltc4215 force=0,0x44
  22. Sysfs entries
  23. -------------
  24. The LTC4215 has built-in limits for overvoltage, undervoltage, and
  25. undercurrent warnings. This makes it very likely that the reference
  26. circuit will be used.
  27. in1_input input voltage
  28. in2_input output voltage
  29. in1_min_alarm input undervoltage alarm
  30. in1_max_alarm input overvoltage alarm
  31. curr1_input current
  32. curr1_max_alarm overcurrent alarm
  33. power1_input power usage
  34. power1_alarm power bad alarm