projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1f61cab8 GR |
1 | Kernel driver max20751 |
| 2 | ====================== | |
| 3 | ||
| 4 | Supported chips: | |
| 1f234ff1 | 5 | |
| 1f61cab8 | 6 | * maxim MAX20751 |
| 1f234ff1 | 7 | |
| 1f61cab8 | 8 | Prefix: 'max20751' |
| 1f234ff1 | 9 | |
| 1f61cab8 | 10 | Addresses scanned: - |
| 1f234ff1 | 11 | |
| f12d634f | 12 | Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX20751.pdf |
| 1f234ff1 | 13 | |
| f12d634f | 14 | Application note: https://pdfserv.maximintegrated.com/en/an/AN5941.pdf |
| 1f61cab8 GR |
15 | |
| 16 | Author: Guenter Roeck <linux@roeck-us.net> | |
| 17 | ||
| 18 | ||
| 19 | Description | |
| 20 | ----------- | |
| 21 | ||
| 22 | This driver supports MAX20751 Multiphase Master with PMBus Interface | |
| 23 | and Internal Buck Converter. | |
| 24 | ||
| 25 | The driver is a client driver to the core PMBus driver. | |
| 7ebd8b66 | 26 | Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers. |
| 1f61cab8 GR |
27 | |
| 28 | ||
| 29 | Usage Notes | |
| 30 | ----------- | |
| 31 | ||
| 32 | This driver does not auto-detect devices. You will have to instantiate the | |
| ccf988b6 | 33 | devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for |
| 1f61cab8 GR |
34 | details. |
| 35 | ||
| 36 | ||
| 37 | Platform data support | |
| 38 | --------------------- | |
| 39 | ||
| 40 | The driver supports standard PMBus driver platform data. | |
| 41 | ||
| 42 | ||
| 43 | Sysfs entries | |
| 44 | ------------- | |
| 45 | ||
| 46 | The following attributes are supported. | |
| 47 | ||
| 1f234ff1 | 48 | ======================= ======================================================= |
| 1f61cab8 GR |
49 | in1_label "vin1" |
| 50 | in1_input Measured voltage. | |
| 51 | in1_min Minimum input voltage. | |
| 52 | in1_max Maximum input voltage. | |
| 53 | in1_lcrit Critical minimum input voltage. | |
| 54 | in1_crit Critical maximum input voltage. | |
| 55 | in1_min_alarm Input voltage low alarm. | |
| 56 | in1_lcrit_alarm Input voltage critical low alarm. | |
| 57 | in1_min_alarm Input voltage low alarm. | |
| 58 | in1_max_alarm Input voltage high alarm. | |
| 59 | ||
| 60 | in2_label "vout1" | |
| 61 | in2_input Measured voltage. | |
| 62 | in2_min Minimum output voltage. | |
| 63 | in2_max Maximum output voltage. | |
| 64 | in2_lcrit Critical minimum output voltage. | |
| 65 | in2_crit Critical maximum output voltage. | |
| 66 | in2_min_alarm Output voltage low alarm. | |
| 67 | in2_lcrit_alarm Output voltage critical low alarm. | |
| 68 | in2_min_alarm Output voltage low alarm. | |
| 69 | in2_max_alarm Output voltage high alarm. | |
| 70 | ||
| 71 | curr1_input Measured output current. | |
| 72 | curr1_label "iout1" | |
| 73 | curr1_max Maximum output current. | |
| 74 | curr1_alarm Current high alarm. | |
| 75 | ||
| 76 | temp1_input Measured temperature. | |
| 77 | temp1_max Maximum temperature. | |
| 78 | temp1_crit Critical high temperature. | |
| 79 | temp1_max_alarm Chip temperature high alarm. | |
| 80 | temp1_crit_alarm Chip temperature critical high alarm. | |
| 81 | ||
| 82 | power1_input Output power. | |
| 83 | power1_label "pout1" | |
| 1f234ff1 | 84 | ======================= ======================================================= |