diff options
| author | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-09-02 09:58:37 -0700 |
|---|---|---|
| committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-10-24 11:09:42 -0700 |
| commit | c3ff9a674c2313d4f28e38d384b18b561b313eb7 (patch) | |
| tree | 6c8dea7a9c7f43e471abac7ad56e882b74cc3b8d /Documentation | |
| parent | 3d790287c4e6caa8790421737b1cf8f0a6531559 (diff) | |
hwmon: (pmbus/ltc2978) Explicit driver for LTC2978
Provide explicit driver for LTC2978 to enable support for minimum and peak
attributes. Remove ltc2978 chip id from generic pmbus driver.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/ltc2978 | 78 | ||||
| -rw-r--r-- | Documentation/hwmon/pmbus | 5 |
2 files changed, 78 insertions, 5 deletions
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 new file mode 100644 index 00000000000..499129e1189 --- /dev/null +++ b/Documentation/hwmon/ltc2978 @@ -0,0 +1,78 @@ +Kernel driver ltc2978 +===================== + +Supported chips: + * Linear Technology LTC2978 + Prefix: 'ltc2978' + Addresses scanned: - + Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf + +Author: Guenter Roeck <guenter.roeck@ericsson.com> + + +Description +----------- + +The LTC2978 is an octal power supply monitor, supervisor, sequencer and +margin controller. + + +Usage Notes +----------- + +This driver does not probe for PMBus devices. You will have to instantiate +devices explicitly. + +Example: the following commands will load the driver for an LTC2978 at address +0x60 on I2C bus #1: + +# modprobe ltc2978 +# echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device + + +Sysfs attributes +---------------- + +in1_label "vin" +in1_input Measured input voltage. +in1_min Minimum input voltage. +in1_max Maximum input voltage. +in1_lcrit Critical minimum input voltage. +in1_crit Critical maximum input voltage. +in1_min_alarm Input voltage low alarm. +in1_max_alarm Input voltage high alarm. +in1_lcrit_alarm Input voltage critical low alarm. +in1_crit_alarm Input voltage critical high alarm. +in1_lowest Lowest input voltage. +in1_highest Highest input voltage. +in1_reset_history Reset history. Writing into this attribute will reset + history for all attributes. + +in[2-9]_label "vout[1-8]". +in[2-9]_input Measured output voltage. +in[2-9]_min Minimum output voltage. +in[2-9]_max Maximum output voltage. +in[2-9]_lcrit Critical minimum output voltage. +in[2-9]_crit Critical maximum output voltage. +in[2-9]_min_alarm Output voltage low alarm. +in[2-9]_max_alarm Output voltage high alarm. +in[2-9]_lcrit_alarm Output voltage critical low alarm. +in[2-9]_crit_alarm Output voltage critical high alarm. +in[2-9]_lowest Lowest output voltage. +in[2-9]_highest Lowest output voltage. +in[2-9]_reset_history Reset history. Writing into this attribute will reset + history for all attributes. + +temp1_input Measured temperature. +temp1_min Mimimum temperature. +temp1_max Maximum temperature. +temp1_lcrit Critical low temperature. +temp1_crit Critical high temperature. +temp1_min_alarm Chip temperature low alarm. +temp1_max_alarm Chip temperature high alarm. +temp1_lcrit_alarm Chip temperature critical low alarm. +temp1_crit_alarm Chip temperature critical high alarm. +temp1_lowest Lowest measured temperature. +temp1_highest Highest measured temperature. +temp1_reset_history Reset history. Writing into this attribute will reset + history for all attributes. diff --git a/Documentation/hwmon/pmbus b/Documentation/hwmon/pmbus index c36c1c1a62b..ce02f5d9a6d 100644 --- a/Documentation/hwmon/pmbus +++ b/Documentation/hwmon/pmbus @@ -8,11 +8,6 @@ Supported chips: Addresses scanned: - Datasheet: http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146395 - * Linear Technology LTC2978 - Octal PMBus Power Supply Monitor and Controller - Prefix: 'ltc2978' - Addresses scanned: - - Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf * ON Semiconductor ADP4000, NCP4200, NCP4208 Prefixes: 'adp4000', 'ncp4200', 'ncp4208' Addresses scanned: - |