* i2c devices and regulators
@ 2015-11-12 5:28 Phil Reid
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From: Phil Reid @ 2015-11-12 5:28 UTC (permalink / raw)
To: linux-i2c
G'day All,
Please direct me to the appropriate message list if this is the wrong place.
Is there a generic way to apply a regulator dependencies on an i2c
device via the device tree.
Situation is with our hardware a number of slave i2c devices attached
via one of the following example:
- eg. TCA6408 GPIO with Vccp on separate regulator to i2c bus Vcci.
These device hold reset until Vccp reaches threshold.
- I2c isolators eg. ADUM1250 isolator that requires power one both
sides before communication starts.
Is there a generic mechanism to apply a regulator supply to a i2c
device? Or should this be part of the individual device driver?
Similar situation occur with i2c multiplexers. It may be required to
power up a slave side regulator before switch to a but that is
currently isolated.
Or is there a better method of controlling these dependencies that I've
missed?
--
Regards
Phil Reid
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2015-11-12 5:28 i2c devices and regulators Phil Reid
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