| Guenter Roeck | f5bae26 | 2011-02-02 08:49:54 -0800 | [diff] [blame] | 1 | Kernel driver max16065 |
| 2 | ====================== |
| 3 | |
| 4 | Supported chips: |
| 5 | * Maxim MAX16065, MAX16066 |
| 6 | Prefixes: 'max16065', 'max16066' |
| 7 | Addresses scanned: - |
| 8 | Datasheet: |
| 9 | http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf |
| 10 | * Maxim MAX16067 |
| 11 | Prefix: 'max16067' |
| 12 | Addresses scanned: - |
| 13 | Datasheet: |
| 14 | http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf |
| 15 | * Maxim MAX16068 |
| 16 | Prefix: 'max16068' |
| 17 | Addresses scanned: - |
| 18 | Datasheet: |
| 19 | http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf |
| 20 | * Maxim MAX16070/MAX16071 |
| 21 | Prefixes: 'max16070', 'max16071' |
| 22 | Addresses scanned: - |
| 23 | Datasheet: |
| 24 | http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf |
| 25 | |
| 26 | |
| 27 | Author: Guenter Roeck <guenter.roeck@ericsson.com> |
| 28 | |
| 29 | |
| 30 | Description |
| 31 | ----------- |
| 32 | |
| 33 | [From datasheets] The MAX16065/MAX16066 flash-configurable system managers |
| 34 | monitor and sequence multiple system voltages. The MAX16065/MAX16066 can also |
| 35 | accurately monitor (+/-2.5%) one current channel using a dedicated high-side |
| 36 | current-sense amplifier. The MAX16065 manages up to twelve system voltages |
| 37 | simultaneously, and the MAX16066 manages up to eight supply voltages. |
| 38 | |
| 39 | The MAX16067 flash-configurable system manager monitors and sequences multiple |
| 40 | system voltages. The MAX16067 manages up to six system voltages simultaneously. |
| 41 | |
| 42 | The MAX16068 flash-configurable system manager monitors and manages up to six |
| 43 | system voltages simultaneously. |
| 44 | |
| 45 | The MAX16070/MAX16071 flash-configurable system monitors supervise multiple |
| 46 | system voltages. The MAX16070/MAX16071 can also accurately monitor (+/-2.5%) |
| 47 | one current channel using a dedicated high-side current-sense amplifier. The |
| 48 | MAX16070 monitors up to twelve system voltages simultaneously, and the MAX16071 |
| 49 | monitors up to eight supply voltages. |
| 50 | |
| 51 | Each monitored channel has its own low and high critical limits. MAX16065, |
| 52 | MAX16066, MAX16070, and MAX16071 support an additional limit which is |
| 53 | configurable as either low or high secondary limit. MAX16065, MAX16066, |
| 54 | MAX16070, and MAX16071 also support supply current monitoring. |
| 55 | |
| 56 | |
| 57 | Usage Notes |
| 58 | ----------- |
| 59 | |
| 60 | This driver does not probe for devices, since there is no register which |
| 61 | can be safely used to identify the chip. You will have to instantiate |
| 62 | the devices explicitly. Please see Documentation/i2c/instantiating-devices for |
| 63 | details. |
| 64 | |
| Guenter Roeck | d91aae1 | 2011-08-29 22:53:20 -0700 | [diff] [blame] | 65 | WARNING: Do not access chip registers using the i2cdump command, and do not use |
| 66 | any of the i2ctools commands on a command register (0xa5 to 0xac). The chips |
| 67 | supported by this driver interpret any access to a command register (including |
| 68 | read commands) as request to execute the command in question. This may result in |
| 69 | power loss, board resets, and/or Flash corruption. Worst case, your board may |
| 70 | turn into a brick. |
| 71 | |
| Guenter Roeck | f5bae26 | 2011-02-02 08:49:54 -0800 | [diff] [blame] | 72 | |
| 73 | Sysfs entries |
| 74 | ------------- |
| 75 | |
| 76 | in[0-11]_input Input voltage measurements. |
| 77 | |
| 78 | in12_input Voltage on CSP (Current Sense Positive) pin. |
| 79 | Only if the chip supports current sensing and if |
| 80 | current sensing is enabled. |
| 81 | |
| 82 | in[0-11]_min Low warning limit. |
| 83 | Supported on MAX16065, MAX16066, MAX16070, and MAX16071 |
| 84 | only. |
| 85 | |
| 86 | in[0-11]_max High warning limit. |
| 87 | Supported on MAX16065, MAX16066, MAX16070, and MAX16071 |
| 88 | only. |
| 89 | |
| 90 | Either low or high warning limits are supported |
| 91 | (depending on chip configuration), but not both. |
| 92 | |
| 93 | in[0-11]_lcrit Low critical limit. |
| 94 | |
| 95 | in[0-11]_crit High critical limit. |
| 96 | |
| 97 | in[0-11]_alarm Input voltage alarm. |
| 98 | |
| 99 | curr1_input Current sense input; only if the chip supports current |
| 100 | sensing and if current sensing is enabled. |
| 101 | Displayed current assumes 0.001 Ohm current sense |
| 102 | resistor. |
| 103 | |
| 104 | curr1_alarm Overcurrent alarm; only if the chip supports current |
| 105 | sensing and if current sensing is enabled. |