Re: How to inject fwnode/oftree/acpi data by platform driver ?

From: Andy Shevchenko
Date: Tue Jun 11 2019 - 14:49:06 EST

+Cc: Heikki.
Heikki, can you help here with swnodes?

On Sat, Jun 1, 2019 at 5:17 PM Enrico Weigelt, metux IT consult
<lkml@xxxxxxxxx> wrote:
> Hi folks,
> I'm looking for a way to inject fwnode data from a platform driver,
> in order to initialize generic drivers w/ board specific configuration.
> The idea is getting rid of passing driver specific pdata structs
> (which, IIRC, seem to be deprecated).
> An example usecase is the APUv2/3 board, which have things like gpios
> wired to buttons and LEDs. The board can only be detected via DMI
> string, no way to probe the platform devices - have to be initialized
> explicitly (that's how I'm already doing it now).
> The nicest way, IMHO, would be if I could just write some piece of DTS
> and some fancy magic all the rest under the hood. Such thing doesn't
> seem to exist yet. Does it make sense to implement that ? How could
> we do it ?
> Which other options do we have ?
> Or should we just leave everything as it is and stick w/ pdata structs ?
> thx
> --mtx
> --
> Enrico Weigelt, metux IT consult
> Free software and Linux embedded engineering
> info@xxxxxxxxx -- +49-151-27565287

With Best Regards,
Andy Shevchenko