^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) Kernel driver ltc4215
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) =====================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) Supported chips:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Linear Technology LTC4215
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) Prefix: 'ltc4215'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) Addresses scanned: 0x44
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) Datasheet:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1006,C1163,P17572,D12697
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) Author: Ira W. Snyder <iws@ovro.caltech.edu>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) Description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) The LTC4215 controller allows a board to be safely inserted and removed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) from a live backplane.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) Usage Notes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) This driver does not probe for LTC4215 devices, due to the fact that some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) of the possible addresses are unfriendly to probing. You will have to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) instantiate the devices explicitly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) Example: the following will load the driver for an LTC4215 at address 0x44
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) on I2C bus #0::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) $ modprobe ltc4215
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) $ echo ltc4215 0x44 > /sys/bus/i2c/devices/i2c-0/new_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) Sysfs entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) -------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) The LTC4215 has built-in limits for overvoltage, undervoltage, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) undercurrent warnings. This makes it very likely that the reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) circuit will be used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ======================= =========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) in1_input input voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) in2_input output voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) in1_min_alarm input undervoltage alarm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) in1_max_alarm input overvoltage alarm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) curr1_input current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) curr1_max_alarm overcurrent alarm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) power1_input power usage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) power1_alarm power bad alarm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) ======================= =========================