twl4030-madc-hwmon.rst (1312B)
1Kernel driver twl4030-madc 2========================== 3 4Supported chips: 5 6 * Texas Instruments TWL4030 7 8 Prefix: 'twl4030-madc' 9 10 11Authors: 12 J Keerthy <j-keerthy@ti.com> 13 14Description 15----------- 16 17The Texas Instruments TWL4030 is a Power Management and Audio Circuit. Among 18other things it contains a 10-bit A/D converter MADC. The converter has 16 19channels which can be used in different modes. 20 21 22See this table for the meaning of the different channels 23 24======= ========================================================== 25Channel Signal 26======= ========================================================== 270 Battery type(BTYPE) 281 BCI: Battery temperature (BTEMP) 292 GP analog input 303 GP analog input 314 GP analog input 325 GP analog input 336 GP analog input 347 GP analog input 358 BCI: VBUS voltage(VBUS) 369 Backup Battery voltage (VBKP) 3710 BCI: Battery charger current (ICHG) 3811 BCI: Battery charger voltage (VCHG) 3912 BCI: Main battery voltage (VBAT) 4013 Reserved 4114 Reserved 4215 VRUSB Supply/Speaker left/Speaker right polarization level 43======= ========================================================== 44 45 46The Sysfs nodes will represent the voltage in the units of mV, 47the temperature channel shows the converted temperature in 48degree Celsius. The Battery charging current channel represents 49battery charging current in mA.