[U-Boot] [PATCH v2] spl: Introduce SPL_DM_GPIO Kconfig define

[Lukasz Majewski]

Hi Simon,

> Hi Lukasz,
> 
> On Wed, 9 Oct 2019 at 03:02, Lukasz Majewski <lukma at denx.de> wrote:
> >
> > Dear Tom,
> >  
> > > This define indicates if DM_GPIO shall be supported in SPL. This
> > > allows proper operation of DM converted GPIO drivers in SPL,
> > > which use boards.
> > >
> > > Signed-off-by: Lukasz Majewski <lukma at denx.de>
> > > ---
> > >
> > > Changes in v2:
> > > - Add dependency on DM_GPIO
> > >  
> >
> > Tom, are there any issues preventing this patch from being applied
> > to -master?  
> 
> This does not actually define DM_GPIO anywhere though, so this is
> unused.

The goal of this patch is to introduce in Kconfig a CONFIG_SPL_DM_GPIO.
This define would be needed anyway, no matter if you perform the
changes from [1].

This Kconfig define is necessary for the XEA board (i.MX28 based one),
which uses OF_PLATDATA in SPL excessively to fit into size constraints.

To be more precise the mxs_gpio.c driver uses 
#if CONFIG_IS_ENABLED(DM_GPIO) to provide DM GPIO support in SPL with
OF_PLATDATA.


> 
> As it happens I sent a similar patch[1], but it doesn't work. I'll
> try again.

It would be great if we could have [1] not causing build breaks.
However, for my used case it would be enough to have the Kconfig
definition of CONFIG_SPL_DM_GPIO (as I'm using OF_PLATDATA) with it.

Simon, if you don't have time to do the fix for [1] I would opt for
pulling this patch (to just add proper Kconfig define).

> 
> >  
> > >  common/spl/Kconfig | 6 ++++++
> > >  1 file changed, 6 insertions(+)
> > >
> > > diff --git a/common/spl/Kconfig b/common/spl/Kconfig
> > > index f467eca2be..e3df8efa7e 100644
> > > --- a/common/spl/Kconfig
> > > +++ b/common/spl/Kconfig
> > > @@ -452,6 +452,12 @@ config SPL_DMA_SUPPORT
> > >         the CPU moving the data. Enable this option to build the
> > > drivers in drivers/dma as part of an SPL build.
> > >
> > > +config SPL_DM_GPIO
> > > +     bool "Support Driver Model GPIO drivers"
> > > +     depends on SPL_GPIO_SUPPORT && DM_GPIO
> > > +     help
> > > +       Enable support for Driver Model based GPIO drivers in SPL.
> > > +
> > >  config SPL_DRIVERS_MISC_SUPPORT
> > >       bool "Support misc drivers"
> > >       help  
> >  
> 
> Regards,
> SImon
> 
> [1] http://patchwork.ozlabs.org/patch/1167276/




Best regards,

Lukasz Majewski

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