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

[Simon Glass]

Hi Lukasz,

On Mon, 14 Oct 2019 at 06:41, Lukasz Majewski <lukma at denx.de> wrote:
>
> 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).

I have had a crack at this here:

https://gitlab.denx.de/u-boot/custodians/u-boot-dm/commit/a6d15bbd9e4e7684dd47d21817df85915f28cbab

I expect to send this series along with this patch at the end of this week.

>
> >
> > >
> > > >  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/
>

Regards,
Simon