diff options
Diffstat (limited to 'Documentation/hwmon/ltc2978')
| -rw-r--r-- | Documentation/hwmon/ltc2978 | 59 |
1 files changed, 39 insertions, 20 deletions
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 index dc0d08c6130..686c078bb0e 100644 --- a/Documentation/hwmon/ltc2978 +++ b/Documentation/hwmon/ltc2978 @@ -6,10 +6,15 @@ Supported chips: Prefix: 'ltc2974' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc2974 - * Linear Technology LTC2978 + * Linear Technology LTC2977 + Prefix: 'ltc2977' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltc2977 + * Linear Technology LTC2978, LTC2978A Prefix: 'ltc2978' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc2978 + http://www.linear.com/product/ltc2978a * Linear Technology LTC3880 Prefix: 'ltc3880' Addresses scanned: - @@ -18,6 +23,10 @@ Supported chips: Prefix: 'ltc3883' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc3883 + * Linear Technology LTM4676 + Prefix: 'ltm4676' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltm4676 Author: Guenter Roeck <linux@roeck-us.net> @@ -26,8 +35,10 @@ Description ----------- LTC2974 is a quad digital power supply manager. LTC2978 is an octal power supply -monitor. LTC3880 is a dual output poly-phase step-down DC/DC controller. LTC3883 -is a single phase step-down DC/DC controller. +monitor. LTC2977 is a pin compatible replacement for LTC2978. LTC3880 is a dual +output poly-phase step-down DC/DC controller. LTC3883 is a single phase +step-down DC/DC controller. LTM4676 is a dual 13A or single 26A uModule +regulator. Usage Notes @@ -49,23 +60,27 @@ Sysfs attributes in1_label "vin" in1_input Measured input voltage. in1_min Minimum input voltage. -in1_max Maximum input voltage. LTC2974 and LTC2978 only. -in1_lcrit Critical minimum input voltage. LTC2974 and LTC2978 - only. +in1_max Maximum input voltage. + LTC2974, LTC2977, and LTC2978 only. +in1_lcrit Critical minimum input voltage. + LTC2974, LTC2977, and LTC2978 only. in1_crit Critical maximum input voltage. in1_min_alarm Input voltage low alarm. -in1_max_alarm Input voltage high alarm. LTC2974 and LTC2978 only. -in1_lcrit_alarm Input voltage critical low alarm. LTC2974 and LTC2978 - only. +in1_max_alarm Input voltage high alarm. + LTC2974, LTC2977, and LTC2978 only. +in1_lcrit_alarm Input voltage critical low alarm. + LTC2974, LTC2977, and LTC2978 only. in1_crit_alarm Input voltage critical high alarm. -in1_lowest Lowest input voltage. LTC2974 and LTC2978 only. +in1_lowest Lowest input voltage. + LTC2974, LTC2977, and LTC2978 only. in1_highest Highest input voltage. in1_reset_history Reset input voltage history. in[N]_label "vout[1-8]". LTC2974: N=2-5 + LTC2977: N=2-9 LTC2978: N=2-9 - LTC3880: N=2-3 + LTC3880, LTM4676: N=2-3 LTC3883: N=2 in[N]_input Measured output voltage. in[N]_min Minimum output voltage. @@ -83,21 +98,23 @@ in[N]_reset_history Reset output voltage history. temp[N]_input Measured temperature. On LTC2974, temp[1-4] report external temperatures, and temp5 reports the chip temperature. - On LTC2978, only one temperature measurement is - supported and reports the chip temperature. - On LTC3880, temp1 and temp2 report external + On LTC2977 and LTC2978, only one temperature measurement + is supported and reports the chip temperature. + On LTC3880 and LTM4676, temp1 and temp2 report external temperatures, and temp3 reports the chip temperature. On LTC3883, temp1 reports an external temperature, and temp2 reports the chip temperature. -temp[N]_min Mimimum temperature. LTC2974 and LTC2978 only. +temp[N]_min Mimimum temperature. LTC2974, LCT2977, and LTC2978 only. temp[N]_max Maximum temperature. temp[N]_lcrit Critical low temperature. temp[N]_crit Critical high temperature. -temp[N]_min_alarm Temperature low alarm. LTC2974 and LTC2978 only. +temp[N]_min_alarm Temperature low alarm. + LTC2974, LTC2977, and LTC2978 only. temp[N]_max_alarm Temperature high alarm. temp[N]_lcrit_alarm Temperature critical low alarm. temp[N]_crit_alarm Temperature critical high alarm. -temp[N]_lowest Lowest measured temperature. LTC2974 and LTC2978 only. +temp[N]_lowest Lowest measured temperature. + LTC2974, LTC2977, and LTC2978 only. Not supported for chip temperature sensor on LTC2974. temp[N]_highest Highest measured temperature. Not supported for chip temperature sensor on LTC2974. @@ -109,12 +126,13 @@ power1_input Measured input power. power[N]_label "pout[1-4]". LTC2974: N=1-4 + LTC2977: Not supported LTC2978: Not supported - LTC3880: N=1-2 + LTC3880, LTM4676: N=1-2 LTC3883: N=2 power[N]_input Measured output power. -curr1_label "iin". LTC3880 and LTC3883 only. +curr1_label "iin". LTC3880, LTC3883, and LTM4676 only. curr1_input Measured input current. curr1_max Maximum input current. curr1_max_alarm Input current high alarm. @@ -123,8 +141,9 @@ curr1_reset_history Reset input current history. LTC3883 only. curr[N]_label "iout[1-4]". LTC2974: N=1-4 + LTC2977: not supported LTC2978: not supported - LTC3880: N=2-3 + LTC3880, LTM4676: N=2-3 LTC3883: N=2 curr[N]_input Measured output current. curr[N]_max Maximum output current. |