On Fri, Oct 04, 2019 at 06:12:52PM +0200, Jean-Jacques Hiblot wrote: > On 04/10/2019 17:58, Mark Brown wrote: > > Regulator supplies are supposed to be defined at the chip level rather > > than subfunctions with names corresponding to the names on the chip. ... > > good chance that they come up with the same mapping. The supply_alias > > interface is there to allow mapping these through to subfunctions if > > needed, it looks like the LED framework should be using this. > In case of current-sink LED drivers, each LED can be powered by a different > regulator, because the driver is only a switch between the LED cathod and > the ground. Sure, it's common for devices to have supplies that are only needed by one part of the chip which is why we have the supply_alias interface for mapping things through. > > That said if you are doing the above and the LEDs are appearing as > > devices it's extremely surprising that their of_node might not be > > initialized. > That is because this is usually done by the platform core which is not > involved here. The surprise is more that it got instantiated from the DT without keeping the node around than how it happened.
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