On Wed, Dec 02, 2015 at 08:34:38PM +0000, Simon Arlott wrote:
> On 02/12/15 20:21, Brian Norris wrote:
> > On Wed, Dec 02, 2015 at 08:12:32PM +0000, Simon Arlott wrote:
> >> On 02/12/15 20:00, Brian Norris wrote:
> >> > On Wed, Dec 02, 2015 at 07:41:07PM +0000, Simon Arlott wrote:
> >> >> I've created a bcm963268part driver so there won't need to be any
> >> >> partitions in DT for bcm63268.
> >> >
> >> > Just curious, do you plan to submit this driver? We're working on
> >>
> >> Yes, it's just the most recent one I've been working on. I still have
> >> USBH and IUDMA to submit
> >>
> >> > matching up partition parsers to flash devices via device tree
> >> > of_match_table's, so you could do something like this:
> >> >
> >> > nand0: nandcs@0 {
> >> > compatible = "brcm,nandcs";
> >> > ...
> >> >
> >> > partitions {
> >> > compatible = "brcm,bcm963268-partitions";
> >> > ...
> >> > };
> >> > };
> >>
> >> I modified brcmnand to look for a machine matching "brcm,bcm963268", but
> >
> > Like this?
> >
> > http://patchwork.ozlabs.org/patch/473180/
> >
> > I'd like to avoid that (hence the "Rejected" status).
>
> I exported default_mtd_part_types, copied it, and then added to it:
> + for (i = 0; i < nr_types; i++)
> + part_types[i] = default_mtd_part_types[i];
> +
> + /* Add partition type based on machine */
> + if (of_machine_is_compatible("brcm,bcm963268"))
> + part_types[i++] = "bcm963268part";
> + else
> + part_types[i++] = NULL;
> +
> + part_types[i++] = NULL;
OK, so even uglier :)
> >> that way is ok with me. Presumably "ofpart" defers to another matching
> >> partition parser?
> >
> > Yes, "ofpart" is for specifying the entire partition table in the device
> > tree as subnodes of either the flash node or of the flash's "partitions"
> > subnode. It's not the most flexible, but it does work generically.
> >
> >> Is there a patch for that method of parser detection available?
> >
> > I have something working here, but I haven't had time to finish cleaning
> > it up and submitting it. There's an older patch that works similarly,
> > though it has some deficiencies:
> >
> > http://patchwork.ozlabs.org/patch/475988/
> >
> > The main difference between that and my (yet-to-be-submitted) proposal
> > is that I'd like parsers to opt in by adding a proper of_match_table
> > with non-Linux-specific DT bindings, and then we can drop the
> > "linux,..." naming and make it a reasonably generic property.
>
> I'll submit my parser without any means of using it,
Sounds fine.
> let me know if you
> want me to work on a patch for a match table.
If you're interested, I may CC you on my patches for testing/review.
Brian
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