Re: [PATCH] spi/mpc5121: register spi child devices of spi node

[Feng Tang <feng.tang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

On Tue, 27 Jul 2010 15:00:29 +0800
Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org> wrote:

> On Tue, Jul 27, 2010 at 1:14 AM, Feng Tang <feng.tang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> wrote:
> > On Tue, 27 Jul 2010 14:28:57 +0800
> > David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org> wrote:
> >
> >> There are things wrong with the concept of this
> >> particular patch.  First, that it's mpc5121-only.
> >> Second, that it's not already handled as part of
> >> registering the platform's SPI devices.
> >>
> >>
> >
> > Hi David, Grant,
> >
> > This actually brings up another topic: currently
> > spi_register_board_info() has to be called before spi
> > controller(master) get inited. But in some case, to solve some
> > device dependency issue, some spi slave device need be delayed
> > registering, can we adjust it to make register_board_info() be
> > callable after spi controller is inited? Which makes spi bus like
> > general pci/usb bus, where devices/drivers have no registering
> > order limit.
> 
> Is spi_alloc_device()/spi_add_device() not suitable for your use-case?
> 
> g.

Yes, I've thought about that, but spi_alloc_device() is called when you
know which spi_master it is connecting to, while our platform need kind
of blind registering (just register something to spi-bus).

Thanks,
Feng

------------------------------------------------------------------------------
The Palm PDK Hot Apps Program offers developers who use the
Plug-In Development Kit to bring their C/C++ apps to Palm for a share 
of $1 Million in cash or HP Products. Visit us here for more details:
http://ad.doubleclick.net/clk;226879339;13503038;l?
http://clk.atdmt.com/CRS/go/247765532/direct/01/