[PATCH 3/3] mmc: esdhc i.MX: Support 8bit mode

Sascha Hauer s.hauer at pengutronix.de
Tue Sep 25 04:05:25 EDT 2012


On Tue, Sep 25, 2012 at 03:45:50PM +0800, Shawn Guo wrote:
> On Tue, Sep 25, 2012 at 09:38:08AM +0200, Sascha Hauer wrote:
> > So you want to make the code conform to the common spec which has
> > bus-width as a required property. Is this really worth it to add an
> > incompatible change to our devicetrees?
> > 
> I do want to have our implementation conform to common spec.  At the
> current stage devicetrees are not stable anyway, so we should make
> them right as much as possible before they start getting maintained
> separately from kernel tree, where we will be asked to maintain
> devicetree compatibility a lot harder.

Ok, how about this:

- I add a bus-width = <4> property to all i.MX dtsi files
- we merge the patch adding bus-width as an optional property
- Make the bus-width option mandatory in the next step.

This way we can merge the mmc related patches through the mmc tree and
the dts changes through arm-soc.

Sascha


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