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Diffstat (limited to 'Documentation/hwmon/lochnagar.rst')
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diff --git a/Documentation/hwmon/lochnagar.rst b/Documentation/hwmon/lochnagar.rst new file mode 100644 index 0000000000..1d609c4d18 --- /dev/null +++ b/Documentation/hwmon/lochnagar.rst @@ -0,0 +1,83 @@ +Kernel Driver Lochnagar +======================= + +Supported systems: + * Cirrus Logic : Lochnagar 2 + +Author: Lucas A. Tanure Alves + +Description +----------- + +Lochnagar 2 features built-in Current Monitor circuitry that allows for the +measurement of both voltage and current on up to eight of the supply voltage +rails provided to the minicards. The Current Monitor does not require any +hardware modifications or external circuitry to operate. + +The current and voltage measurements are obtained through the standard register +map interface to the Lochnagar board controller, and can therefore be monitored +by software. + +Sysfs attributes +---------------- + +======================= ======================================================= +temp1_input The Lochnagar board temperature (milliCelsius) +in0_input Measured voltage for DBVDD1 (milliVolts) +in0_label "DBVDD1" +curr1_input Measured current for DBVDD1 (milliAmps) +curr1_label "DBVDD1" +power1_average Measured average power for DBVDD1 (microWatts) +power1_average_interval Power averaging time input valid from 1 to 1708mS +power1_label "DBVDD1" +in1_input Measured voltage for 1V8 DSP (milliVolts) +in1_label "1V8 DSP" +curr2_input Measured current for 1V8 DSP (milliAmps) +curr2_label "1V8 DSP" +power2_average Measured average power for 1V8 DSP (microWatts) +power2_average_interval Power averaging time input valid from 1 to 1708mS +power2_label "1V8 DSP" +in2_input Measured voltage for 1V8 CDC (milliVolts) +in2_label "1V8 CDC" +curr3_input Measured current for 1V8 CDC (milliAmps) +curr3_label "1V8 CDC" +power3_average Measured average power for 1V8 CDC (microWatts) +power3_average_interval Power averaging time input valid from 1 to 1708mS +power3_label "1V8 CDC" +in3_input Measured voltage for VDDCORE DSP (milliVolts) +in3_label "VDDCORE DSP" +curr4_input Measured current for VDDCORE DSP (milliAmps) +curr4_label "VDDCORE DSP" +power4_average Measured average power for VDDCORE DSP (microWatts) +power4_average_interval Power averaging time input valid from 1 to 1708mS +power4_label "VDDCORE DSP" +in4_input Measured voltage for AVDD 1V8 (milliVolts) +in4_label "AVDD 1V8" +curr5_input Measured current for AVDD 1V8 (milliAmps) +curr5_label "AVDD 1V8" +power5_average Measured average power for AVDD 1V8 (microWatts) +power5_average_interval Power averaging time input valid from 1 to 1708mS +power5_label "AVDD 1V8" +curr6_input Measured current for SYSVDD (milliAmps) +curr6_label "SYSVDD" +power6_average Measured average power for SYSVDD (microWatts) +power6_average_interval Power averaging time input valid from 1 to 1708mS +power6_label "SYSVDD" +in6_input Measured voltage for VDDCORE CDC (milliVolts) +in6_label "VDDCORE CDC" +curr7_input Measured current for VDDCORE CDC (milliAmps) +curr7_label "VDDCORE CDC" +power7_average Measured average power for VDDCORE CDC (microWatts) +power7_average_interval Power averaging time input valid from 1 to 1708mS +power7_label "VDDCORE CDC" +in7_input Measured voltage for MICVDD (milliVolts) +in7_label "MICVDD" +curr8_input Measured current for MICVDD (milliAmps) +curr8_label "MICVDD" +power8_average Measured average power for MICVDD (microWatts) +power8_average_interval Power averaging time input valid from 1 to 1708mS +power8_label "MICVDD" +======================= ======================================================= + +Note: + It is not possible to measure voltage on the SYSVDD rail. |