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Diffstat (limited to 'Documentation/hwmon/twl4030-madc-hwmon')
| -rw-r--r-- | Documentation/hwmon/twl4030-madc-hwmon | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/hwmon/twl4030-madc-hwmon b/Documentation/hwmon/twl4030-madc-hwmon new file mode 100644 index 00000000..c3a3a5be --- /dev/null +++ b/Documentation/hwmon/twl4030-madc-hwmon @@ -0,0 +1,45 @@ +Kernel driver twl4030-madc +========================= + +Supported chips: + * Texas Instruments TWL4030 + Prefix: 'twl4030-madc' + + +Authors: + J Keerthy <j-keerthy@ti.com> + +Description +----------- + +The Texas Instruments TWL4030 is a Power Management and Audio Circuit. Among +other things it contains a 10-bit A/D converter MADC. The converter has 16 +channels which can be used in different modes. + + +See this table for the meaning of the different channels + +Channel Signal +------------------------------------------ +0 Battery type(BTYPE) +1 BCI: Battery temperature (BTEMP) +2 GP analog input +3 GP analog input +4 GP analog input +5 GP analog input +6 GP analog input +7 GP analog input +8 BCI: VBUS voltage(VBUS) +9 Backup Battery voltage (VBKP) +10 BCI: Battery charger current (ICHG) +11 BCI: Battery charger voltage (VCHG) +12 BCI: Main battery voltage (VBAT) +13 Reserved +14 Reserved +15 VRUSB Supply/Speaker left/Speaker right polarization level + + +The Sysfs nodes will represent the voltage in the units of mV, +the temperature channel shows the converted temperature in +degree Celsius. The Battery charging current channel represents +battery charging current in mA. |