[U-Boot] [U-Boot-DM] pre-reloc fdt scan for non-top-level nodes

[Simon Glass]

(We don't use the -dm mailing list...perhaps it should be deleted?)

On Wed, 27 Feb 2019 at 09:22, viktor babrian <viktor.babrian at gmail.com>
wrote:

> Hi,
>
> as far as I understood, the pre-reloc device binding of drivers having
> DM_FLAG_PRE_RELOC flag set is only performed for top-level devices -
> at least that is what I experience. Is this intentional? What is the
> concept there?
> I am trying to use a spi slave display that is by default described as
> a node under root/soc/spiX. We have the device working under Linux. I
> understand these displays are not supported as is in u-boot so I
> ported some Linux code and made some minor mods in the video uclass.
> Still I do not have memory reserved for the frame-buffer and debugging
> shows that it is because bind() is not invoked pre-reloc. And it is
> not invoked because dm_extended_scan_fdt() parses top-level nodes
> only.
> I wonder if that pre-reloc scan is so for some purpose because a
> recursive scan would seemingly be justified in my case.
> (or am I just missing something?)
>
> Any comments are welcome,
> Thanks,
> Viktor
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