[PATCH v2 0/3] doc: Clarify how U-Boot makes use of devicetree

[Simon Glass <sjg@chromium.org>]

This series includes a documentation update to clarify how U-Boot makes
use of devicetree and its requirements when working with other firmware
projects.

Once agreed it should provide more clarity in this area, which seems to
have devolved into a confusing mire recently.

My goal here is to sort out this area one and for all, clearly documenting
the use cases and implications of them. I hope that the end result of this
(substantial) effort will be a shared understanding of how to move
forward in U-Boot and hopefully some ideas for firmware in general.

It also cleans up the config binding since this has got a bit out-of-date.

Changes in v2:
- Add a new patch to tidy up the /config bindings
- Add new patch to document remaining runtime-config options
- Fix typos per Sean (thank you!) and a few others
- Add a 'Use of U-Boot /config node' section
- Drop mention of dm-verity since that actually uses the kernel cmdline
- Explain that OF_BOARD will still work after these changes (in
  'Once this bug is fixed...' paragraph)
- Expand a bit on the reason why the 'Current situation' is bad
- Clarify in a second place that Linux and U-Boot use the same devicetree
  in 'To be clear, while U-Boot...'
- Expand on why we should have rules for other projects in
  'Devicetree in another project'
- Add a comment as to why devicetree in U-Boot is not 'bad design'
- Reword 'in-tree U-Boot devicetree' to 'devicetree source in U-Boot'
- Rewrite 'Devicetree generated on-the-fly in another project' to cover
  points raised on v1
- Add 'Why does U-Boot have its nodes and properties?'
- Add 'Why not have two devicetrees?'

Simon Glass (3):
  doc: Tidy up the bindings for the config/ node
  doc: Complete the list of available runtime-config options
  RFC: doc: Add documentation about devicetree usage

 doc/develop/index.rst               |   1 +
 doc/develop/package/devicetree.rst  | 563 ++++++++++++++++++++++++++++
 doc/develop/package/index.rst       |   1 +
 doc/device-tree-bindings/config.txt |  83 +++-
 4 files changed, 632 insertions(+), 16 deletions(-)
 create mode 100644 doc/develop/package/devicetree.rst

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2.33.0.259.gc128427fd7-goog