On Tue, Apr 26, 2016 at 11:14:25AM -0500, Andreas Dannenberg wrote:
On Tue, Apr 26, 2016 at 04:37:07PM +0100, Mark Brown wrote:
On Mon, Apr 25, 2016 at 03:17:35PM -0500, Andreas Dannenberg wrote:
+Optional properties:
+- dvdd-supply : phandle to a 3.3-V supply for the digital circuitry +- pvdd-supply : phandle to a supply used for the Class-D amp and the analog
This suggests that the device doesn't need power...
no power, now that would be nice! :) What this was supposed to mean is that the properties are optional, the power of course is not. The DT has
They should only be optional if they may really be missing. We may attempt to be liberal in the DTs we accept but we should not encourage sloppily written DTs.
really no control over how I wire up my HW and I'd argue most folks just permanently power the TAS5720 since the shutdown current is just a few uAs IIRC in order to save some BOM cost. But I suppose the DT description is such that the Kernel can more intelligently handle things based on what the driver is doing if somebody choses and implements additional regulator/power switch HW. Or did I misunderstand your point?
It doesn't really matter if a given system ends up controlling things actively, we still want to be consistent in describing them since it is less error prone when it does become relevant.