| Kernel driver mc13783-adc |
| ========================= |
| |
| Supported chips: |
| * Freescale Atlas MC13783 |
| Prefix: 'mc13783' |
| Datasheet: http://www.freescale.com/files/rf_if/doc/data_sheet/MC13783.pdf?fsrch=1 |
| * Freescale Atlas MC13892 |
| Prefix: 'mc13892' |
| Datasheet: http://cache.freescale.com/files/analog/doc/data_sheet/MC13892.pdf?fsrch=1&sr=1 |
| |
| Authors: |
| Sascha Hauer <s.hauer@pengutronix.de> |
| Luotao Fu <l.fu@pengutronix.de> |
| |
| Description |
| ----------- |
| |
| The Freescale MC13783 and MC13892 are Power Management and Audio Circuits. |
| Among other things they contain a 10-bit A/D converter. The converter has 16 |
| (MC13783) resp. 12 (MC13892) channels which can be used in different modes. The |
| A/D converter has a resolution of 2.25mV. |
| |
| Some channels can be used as General Purpose inputs or in a dedicated mode with |
| a chip internal scaling applied . |
| |
| Currently the driver only supports the Application Supply channel (BP / BPSNS), |
| the General Purpose inputs and touchscreen. |
| |
| See the following tables for the meaning of the different channels and their |
| chip internal scaling: |
| |
| MC13783: |
| ChannelSignalInput RangeScaling |
| ------------------------------------------------------------------------------- |
| 0Battery Voltage (BATT)2.50 - 4.65V-2.40V |
| 1Battery Current (BATT - BATTISNS)-50 - 50 mV x20 |
| 2Application Supply (BP)2.50 - 4.65V-2.40V |
| 3Charger Voltage (CHRGRAW)0 - 10V //5 |
| 0 - 20V/10 |
| 4Charger Current (CHRGISNSP-CHRGISNSN)-0.25 - 0.25Vx4 |
| 5General Purpose ADIN5 / Battery Pack Thermistor0 - 2.30VNo |
| 6General Purpose ADIN6 / Backup Voltage (LICELL)0 - 2.30V /No / |
| 1.50 - 3.50V-1.20V |
| 7General Purpose ADIN7 / UID / Die Temperature0 - 2.30V /No / |
| 0 - 2.55V /x0.9 / No |
| 8General Purpose ADIN80 - 2.30VNo |
| 9General Purpose ADIN90 - 2.30VNo |
| 10General Purpose ADIN100 - 2.30VNo |
| 11General Purpose ADIN110 - 2.30VNo |
| 12General Purpose TSX1 / Touchscreen X-plate 10 - 2.30VNo |
| 13General Purpose TSX2 / Touchscreen X-plate 20 - 2.30VNo |
| 14General Purpose TSY1 / Touchscreen Y-plate 10 - 2.30VNo |
| 15General Purpose TSY2 / Touchscreen Y-plate 20 - 2.30VNo |
| |
| MC13892: |
| ChannelSignalInput RangeScaling |
| ------------------------------------------------------------------------------- |
| 0Battery Voltage (BATT)0 - 4.8V/2 |
| 1Battery Current (BATT - BATTISNSCC)-60 - 60 mV x20 |
| 2Application Supply (BPSNS)0 - 4.8V/2 |
| 3Charger Voltage (CHRGRAW)0 - 12V //5 |
| 0 - 20V/10 |
| 4Charger Current (CHRGISNS-BPSNS) /-0.3 - 0.3V /x4 / |
| Touchscreen X-plate 10 - 2.4VNo |
| 5General Purpose ADIN5 /Battery Pack Thermistor0 - 2.4VNo |
| 6General Purpose ADIN6 / Backup Voltage (LICELL)0 - 2.4V /No |
| Backup Voltage (LICELL) 0 - 3.6Vx2/3 |
| 7General Purpose ADIN7 / UID / Die Temperature0 - 2.4V /No / |
| 0 - 4.8V/2 |
| 12General Purpose TSX1 / Touchscreen X-plate 10 - 2.4VNo |
| 13General Purpose TSX2 / Touchscreen X-plate 20 - 2.4VNo |
| 14General Purpose TSY1 / Touchscreen Y-plate 10 - 2.4VNo |
| 15General Purpose TSY2 / Touchscreen Y-plate 20 - 2.4VNo |
