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dm: core: Add ofnode functions to obtain an oftree

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At present dm_test_ofnode_root() does this manually. Add some inline
functions to handle it, so this code can be centralised.

Add oftree functions to produce a null tree and to check whether a tree
is valid or not.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2022-09-06 20:27:21 -06:00
committed by Tom Rini
parent a3f50d0386
commit 085d59411c
2 changed files with 68 additions and 2 deletions
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7
test/dm/ofnode.c
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@@ -518,13 +518,16 @@ static int dm_test_ofnode_root(struct unit_test_state *uts)
ut_assert(ofnode_valid(node));
ut_asserteq_str("sbe5", ofnode_get_name(node));
ut_assert(!oftree_valid(oftree_null()));
ut_assertok(make_ofnode_fdt(uts, fdt, sizeof(fdt)));
if (of_live_active()) {
ut_assertok(unflatten_device_tree(fdt, &root));
tree.np = root;
tree = oftree_from_np(root);
} else {
tree.fdt = fdt;
tree = oftree_from_fdt(fdt);
}
ut_assert(oftree_valid(tree));
/* Make sure they don't work on this new tree */
node = ofnode_path_root(tree, "mmc0");