NAME
tps65217pmic —
Texas Instruments
TPS65217 Power Management IC driver
SYNOPSIS
tps65217pmic0 at iic? addr 0x24
DESCRIPTION
The
tps65217pmic driver provides minimal support for the
TPS65217 chip and allows reporting regulated voltages through the
envsys(4) API.
The TPS65217 consists of low-dropout regulators (LDO) and step-down converters
with integrated switching FETs (DCDC):
- LDO1: 1.0V - 3.3V
- LDO2: 0.9V - 3.3V
- LDO3: 1.5V - 3.3V
- LDO4: 1.5V - 3.3V
- DCDC1: 0.9V - 1.8V
- DCDC2: 0.9V - 3.3V
- DCDC1: 0.9V - 1.5V
SEE ALSO
envsys(4)
HISTORY
The
tps65217pmic device first appeared in
NetBSD 7.0.
AUTHORS
The
tps65217pmic driver was written by
Radoslaw Kujawa
<
radoslaw.kujawa@gmail.com>.
Voltage change callback for AM335x was added by
Manuel
Bouyer. White LED (backlight) support was added by
KIYOHARA Takashi.
CAVEATS
The driver can only report current voltage regulator settings. It can not
measure the real voltage, as the TPS65217 chip lacks hardware to do that.
Modifying voltage regulator parameters from user space was deliberately left
unimplemented, as these parameters should only be set at the firmware level.
Setting wrong parameters may result in permanent hardware damage.
BUGS
Battery and interrupt support is not implemented.