[PATCH 4/4] socfpga: Find partition with environment via device tree

[Sascha Hauer]

On Thu, Dec 17, 2015 at 09:13:25PM +0000, Trent Piepho wrote:
> On Thu, 2015-12-17 at 11:07 +0100, Sascha Hauer wrote:
> > >  / {
> > > +	chosen {
> > > +		environment at 0 {
> > > +			compatible = "barebox,environment";
> > > +			device-path = &mmc, "partname:1";
> > > +			file-path = "barebox.env";
> > > +		};
> > > +	};
> > > +
> > 
> > I applied this series as is. We might have to move this to the board dts
> > files later as putting this into the SoC dtsi file does not allow the
> > boards to put the environment somewhere else. That was not possible
> > before this patch either, so this doesn't change much at the moment.
> 
> It's possible to change in the board dts by adding a
> "/chosen/environment at 0" node to the dts with whatever properties should
> be overridden from the dtsi file's values.  Like how status = "disabled"
> in dtsi is changed to status = "okay" in the board file.  I do this for
> my board as "partname:1" isn't correct for me.

We might also have to delete the file-path property in a board dts. I
just learned that this indeed works with /delete-property/ in dtc, but I
am not sure if we should really use this, the deep levels of device tree
includes are already hard enough to track (Not necessarily for socfpga,
but have a look at some i.MX6 SoMs)

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |