diff options
Diffstat (limited to 'kernel/Documentation/hwmon/ltc2978')
| -rw-r--r-- | kernel/Documentation/hwmon/ltc2978 | 132 |
1 files changed, 93 insertions, 39 deletions
diff --git a/kernel/Documentation/hwmon/ltc2978 b/kernel/Documentation/hwmon/ltc2978 index 686c078bb..9a49d3c90 100644 --- a/kernel/Documentation/hwmon/ltc2978 +++ b/kernel/Documentation/hwmon/ltc2978 @@ -6,6 +6,10 @@ Supported chips: Prefix: 'ltc2974' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc2974 + * Linear Technology LTC2975 + Prefix: 'ltc2975' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltc2975 * Linear Technology LTC2977 Prefix: 'ltc2977' Addresses scanned: - @@ -15,14 +19,38 @@ Supported chips: Addresses scanned: - Datasheet: http://www.linear.com/product/ltc2978 http://www.linear.com/product/ltc2978a + * Linear Technology LTC2980 + Prefix: 'ltc2980' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltc2980 * Linear Technology LTC3880 Prefix: 'ltc3880' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc3880 + * Linear Technology LTC3882 + Prefix: 'ltc3882' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltc3882 * Linear Technology LTC3883 Prefix: 'ltc3883' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc3883 + * Linear Technology LTC3886 + Prefix: 'ltc3886' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltc3886 + * Linear Technology LTC3887 + Prefix: 'ltc3887' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltc3887 + * Linear Technology LTM2987 + Prefix: 'ltm2987' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltm2987 + * Linear Technology LTM4675 + Prefix: 'ltm4675' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltm4675 * Linear Technology LTM4676 Prefix: 'ltm4676' Addresses scanned: - @@ -34,11 +62,20 @@ Author: Guenter Roeck <linux@roeck-us.net> Description ----------- -LTC2974 is a quad digital power supply manager. LTC2978 is an octal power supply -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. +LTC2974 and LTC2975 are quad digital power supply managers. +LTC2978 is an octal power supply monitor. +LTC2977 is a pin compatible replacement for LTC2978. +LTC2980 is a 16-channel Power System Manager, consisting of two LTC2977 +in a single die. The chip is instantiated and reported as two separate chips +on two different I2C bus addresses. +LTC3880, LTC3882, LTC3886, and LTC3887 are dual output poly-phase step-down +DC/DC controllers. +LTC3883 is a single phase step-down DC/DC controller. +LTM2987 is a 16-channel Power System Manager with two LTC2977 plus +additional components on a single die. The chip is instantiated and reported +as two separate chips on two different I2C bus addresses. +LTM4675 is a dual 9A or single 18A μModule regulator +LTM4676 is a dual 13A or single 26A uModule regulator. Usage Notes @@ -61,26 +98,32 @@ in1_label "vin" in1_input Measured input voltage. in1_min Minimum input voltage. in1_max Maximum input voltage. - LTC2974, LTC2977, and LTC2978 only. + LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and + LTM2987 only. in1_lcrit Critical minimum input voltage. - LTC2974, LTC2977, and LTC2978 only. + LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and + LTM2987 only. in1_crit Critical maximum input voltage. in1_min_alarm Input voltage low alarm. in1_max_alarm Input voltage high alarm. - LTC2974, LTC2977, and LTC2978 only. + LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and + LTM2987 only. in1_lcrit_alarm Input voltage critical low alarm. - LTC2974, LTC2977, and LTC2978 only. + LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and + LTM2987 only. in1_crit_alarm Input voltage critical high alarm. in1_lowest Lowest input voltage. - LTC2974, LTC2977, and LTC2978 only. + LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and + LTM2987 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 + LTC2974, LTC2975: N=2-5 + LTC2977, LTC2980, LTM2987: N=2-9 LTC2978: N=2-9 - LTC3880, LTM4676: N=2-3 + LTC3880, LTC3882, LTC23886 LTC3887, LTM4675, LTM4676: + N=2-3 LTC3883: N=2 in[N]_input Measured output voltage. in[N]_min Minimum output voltage. @@ -91,67 +134,78 @@ in[N]_min_alarm Output voltage low alarm. in[N]_max_alarm Output voltage high alarm. in[N]_lcrit_alarm Output voltage critical low alarm. in[N]_crit_alarm Output voltage critical high alarm. -in[N]_lowest Lowest output voltage. LTC2974 and LTC2978 only. +in[N]_lowest Lowest output voltage. LTC2974, LTC2975, + and LTC2978 only. in[N]_highest Highest output voltage. 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 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 LTC2974 and LTC2975, temp[1-4] report external + temperatures, and temp5 reports the chip temperature. + On LTC2977, LTC2980, LTC2978, and LTM2987, only one + temperature measurement is supported and reports + the chip temperature. + On LTC3880, LTC3882, LTC3887, LTM4675, 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, LCT2977, and LTC2978 only. +temp[N]_min Mimimum temperature. LTC2974, LCT2977, LTM2980, LTC2978, + and LTM2987 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, LTC2977, and LTC2978 only. + LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and + LTM2987 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, LTC2977, and LTC2978 only. - Not supported for chip temperature sensor on LTC2974. + LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and + LTM2987 only. + Not supported for chip temperature sensor on LTC2974 and + LTC2975. temp[N]_highest Highest measured temperature. Not supported for chip - temperature sensor on LTC2974. + temperature sensor on LTC2974 and LTC2975. temp[N]_reset_history Reset temperature history. Not supported for chip - temperature sensor on LTC2974. + temperature sensor on LTC2974 and LTC2975. -power1_label "pin". LTC3883 only. +power1_label "pin". LTC3883 and LTC3886 only. power1_input Measured input power. power[N]_label "pout[1-4]". - LTC2974: N=1-4 - LTC2977: Not supported + LTC2974, LTC2975: N=1-4 + LTC2977, LTC2980, LTM2987: Not supported LTC2978: Not supported - LTC3880, LTM4676: N=1-2 + LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676: + N=1-2 LTC3883: N=2 power[N]_input Measured output power. -curr1_label "iin". LTC3880, LTC3883, and LTM4676 only. +curr1_label "iin". LTC3880, LTC3883, LTC3886, LTC3887, LTM4675, + and LTM4676 only. curr1_input Measured input current. curr1_max Maximum input current. curr1_max_alarm Input current high alarm. -curr1_highest Highest input current. LTC3883 only. -curr1_reset_history Reset input current history. LTC3883 only. +curr1_highest Highest input current. LTC3883 and LTC3886 only. +curr1_reset_history Reset input current history. LTC3883 and LTC3886 only. curr[N]_label "iout[1-4]". - LTC2974: N=1-4 - LTC2977: not supported + LTC2974, LTC2975: N=1-4 + LTC2977, LTC2980, LTM2987: not supported LTC2978: not supported - LTC3880, LTM4676: N=2-3 + LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676: + N=2-3 LTC3883: N=2 curr[N]_input Measured output current. curr[N]_max Maximum output current. curr[N]_crit Critical high output current. -curr[N]_lcrit Critical low output current. LTC2974 only. +curr[N]_lcrit Critical low output current. LTC2974 and LTC2975 only. curr[N]_max_alarm Output current high alarm. curr[N]_crit_alarm Output current critical high alarm. -curr[N]_lcrit_alarm Output current critical low alarm. LTC2974 only. -curr[N]_lowest Lowest output current. LTC2974 only. +curr[N]_lcrit_alarm Output current critical low alarm. + LTC2974 and LTC2975 only. +curr[N]_lowest Lowest output current. LTC2974 and LTC2975 only. curr[N]_highest Highest output current. curr[N]_reset_history Reset output current history. |