The ofnode_to_fdt() function may return a NULL pointer in multiple cases.
Or, this function's return value is often passed directly to functions such
as fdt_getprop() which end up dereferencing it, thus causing a NULL pointer
exception.

Don't allow ofnode_to_fdt() to return NULL, to avoid a NULL pointer
dereference.

Reviewed-by: Raphaël Gallais-Pou <raphael.gallais-pou@foss.st.com>
Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
Reviewed-by: Simon Glass <simon.glass@canonical.com>

The "Display Timings" in panel-common.yaml can be provided by 2 properties
- panel-timing: when display panels are restricted to a single resolution
                the "panel-timing" node expresses the required timings.
- display-timings: several resolutions with different timings are supported
                   with several timing subnode of "display-timings" node

This patch update the parsing function to handle this 2 possibility
when index = 0.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>

Support for using "u-boot,dm-..." rather than "bootph-..." has been
deprecated since February 2023. Any platforms using this have had a
console message saying to migrate by 2023.07. Go and remove all support
here now, for the v2026.01 release.

The results of this change that aren't clear from the above are that we
still have a checkpatch.pl error message, and document in
doc/develop/spl.rst that they have been migrated since 2023. We also
change the key2dtsi.py tool to use the correct bootph phase rather than
the legacy phase.

Signed-off-by: Tom Rini <trini@konsulko.com>

Move the NULL check of bootscr_flash_size to before the first time it is
dereferenced to avoid any possible segment violations.

This issue found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

The ofnode_find_subnode() function currently processes things two
different ways, so the treatment of unit addresses differs depending on
whether OF_LIVE is enabled or not.

Add a new version which uses the ofnode API and add a test to check that
unit addresses can be matched correctly. Leave the old function in place
for the !OF_LIVE case, to avoid a code-size increase, e.g. on
firefly-rk3288

Signed-off-by: Simon Glass <sjg@chromium.org>

When a unit-address is provided, use it to match against the node
name.

Since this increases code size, put it into a separate function.

Signed-off-by: Simon Glass <sjg@chromium.org>

Update ofnode_add_subnode() and ofnode_add_prop() to return a suitable
error when space is exhausted in the FDT. This makes it easier to see
what is going wrong.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

At some point it would be nice to have the ofnode API automatically
expand the tree as required, to accommodate new nodes. For now, expand
the default size so that UPL can be supported.

Signed-off-by: Simon Glass <sjg@chromium.org>

Implement ofnode_options phandle helper to get an ofnode from a phandle
option in /options/u-boot.

This helper can be useful since new DT yaml usually require to link a
phandle of a node instead of referencing it by name or other indirect
way.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Implement ofnode/tree_parse_phandle() helper as an equivalent of
of_parse_phandle to handle simple single value phandle.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>