| | 1 | Kernel driver ltc4215 |
| | 2 | ===================== |
| | 3 | |
| | 4 | Supported chips: |
| | 5 | * Linear Technology LTC4215 |
| | 6 | Prefix: 'ltc4215' |
| | 7 | Addresses scanned: 0x44 |
| | 8 | Datasheet: |
| | 9 | http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1006,C1163,P17572,D12697 |
| | 10 | |
| | 11 | Author: Ira W. Snyder <iws@ovro.caltech.edu> |
| | 12 | |
| | 13 | |
| | 14 | Description |
| | 15 | ----------- |
| | 16 | |
| | 17 | The LTC4215 controller allows a board to be safely inserted and removed |
| | 18 | from a live backplane. |
| | 19 | |
| | 20 | |
| | 21 | Usage Notes |
| | 22 | ----------- |
| | 23 | |
| | 24 | This driver does not probe for LTC4215 devices, due to the fact that some |
| | 25 | of the possible addresses are unfriendly to probing. You will have to |
| | 26 | instantiate the devices explicitly. |
| | 27 | |
| | 28 | Example: the following will load the driver for an LTC4215 at address 0x44 |
| | 29 | on I2C bus #0: |
| | 30 | $ modprobe ltc4215 |
| | 31 | $ echo ltc4215 0x44 > /sys/bus/i2c/devices/i2c-0/new_device |
| | 32 | |
| | 33 | |
| | 34 | Sysfs entries |
| | 35 | ------------- |
| | 36 | |
| | 37 | The LTC4215 has built-in limits for overvoltage, undervoltage, and |
| | 38 | undercurrent warnings. This makes it very likely that the reference |
| | 39 | circuit will be used. |
| | 40 | |
| | 41 | in1_input input voltage |
| | 42 | in2_input output voltage |
| | 43 | |
| | 44 | in1_min_alarm input undervoltage alarm |
| | 45 | in1_max_alarm input overvoltage alarm |
| | 46 | |
| | 47 | curr1_input current |
| | 48 | curr1_max_alarm overcurrent alarm |
| | 49 | |
| | 50 | power1_input power usage |
| | 51 | power1_alarm power bad alarm |
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame_incremental