[PATCH 1/2] regulator: ltc3589: make IRQ optional

Mark Brown broonie at kernel.org
Thu Jan 21 02:20:15 PST 2016


On Thu, Jan 21, 2016 at 08:05:24AM +0100, Lothar Waßmann wrote:
> > On Wed, Jan 20, 2016 at 01:29:51PM +0100, Lothar Waßmann wrote:

> > > This pin is used as IRQ pin for the LTC3589 PMIC on the Ka-Ro
> > > electronics TX48 module. Make the IRQ optional in the driver and use a
> > > polling routine instead if no IRQ is specified in DT.
> > > Otherwise the driver will continuously generate interrupts and make
> > > the system unusable.

> > How will the driver generate interrupts if there is no interrupt
> > physically present in the system?

> It's using timer interrupts to poll the LTC3589 state.

I know that is what your patch does, my question is why you say in your
commit log that "Otherwise the driver will continuously generate
interrupts and make the system unusable".
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 473 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20160121/54e8db19/attachment.sig>


More information about the linux-arm-kernel mailing list