[U-Boot] [PATCH v2 02/10] spl: misc: Allow misc drivers in SPL and TPL

[Simon Glass]

On Thu, 31 Jan 2019 at 02:39, Jean-Jacques Hiblot <jjhiblot at ti.com> wrote:
>
>
> On 31/01/2019 03:57, Simon Glass wrote:
> > Hi Jean-Jacques,
> >
> > On Tue, 20 Nov 2018 at 06:49, Jean-Jacques Hiblot <jjhiblot at ti.com> wrote:
> >> Hi Simon,
> >>
> >> On 18/11/2018 16:14, Simon Glass wrote:
> >>> In some cases it is necessary to read the keyboard in early phases of
> >>> U-Boot. The cros_ec keyboard is kept in the misc directory. Update the
> >>> config to allow this.
> >>>
> >>> Signed-off-by: Simon Glass <sjg at chromium.org>
> >>> ---
> >>>
> >>> Changes in v2:
> >>> - Leave the misc uclass alone since it stops sandbox_spl working
> >>>
> >>>    drivers/misc/Kconfig  | 72 +++++++++++++++++++++++++++++++++++++++++++
> >>>    drivers/misc/Makefile |  8 +++--
> >>>    2 files changed, 77 insertions(+), 3 deletions(-)
> >>>
> >>> diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
> >>> index 48febc47d26..802046cf966 100644
> >>> --- a/drivers/misc/Kconfig
> >>> +++ b/drivers/misc/Kconfig
> >>> @@ -13,6 +13,24 @@ config MISC
> >>>          set of generic read, write and ioctl methods may be used to
> >>>          access the device.
> >>>
> >>> +config SPL_MISC
> >>> +     bool "Enable Driver Model for Misc drivers in SPL"
> >>> +     depends on SPL_DM
> >>> +     help
> >>> +       Enable driver model for miscellaneous devices. This class is
> >>> +       used only for those do not fit other more general classes. A
> >>> +       set of generic read, write and ioctl methods may be used to
> >>> +       access the device.
> >> Platforms currently use CONFIG_SPL_DRIVERS_MISC_SUPPORT and CONFIG_MISC
> >> to enable the MISC drivers in the SPL.
> > This is a bit confusing but that is not my understanding of the situation.
> >
> > CONFIG_MISC enables UCLASS_MISC devices. The 'misc' drivers directory
> > is included always in U-Boot proper. Yes the
> > CONFIG_SPL_DRIVERS_MISC_SUPPORT option is for SPL only.
> >
> > But in my case I want an option to enable driver-model MISC devices in
> > SPL/TPL. Oddly this is orthogonal to whether the drivers/misc
> > directory itself is included in the build.
>
> Ok. that makes sense now.

Applied to u-boot-dm.