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dm: core: Support copying properties with ofnode

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Add a function to copy properties from one node to another.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2022-09-06 20:27:33 -06:00
committed by Tom Rini
parent 0b58eaa89c
commit db1ef1e12b
3 changed files with 99 additions and 0 deletions
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59
test/dm/ofnode.c
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@@ -1176,3 +1176,62 @@ static int dm_test_ofnode_too_many(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_ofnode_too_many, UT_TESTF_SCAN_FDT);
static int check_copy_props(struct unit_test_state *uts, ofnode src,
ofnode dst)
{
u32 reg[2], val;
ut_assertok(ofnode_copy_props(src, dst));
ut_assertok(ofnode_read_u32(dst, "ping-expect", &val));
ut_asserteq(3, val);
ut_asserteq_str("denx,u-boot-fdt-test",
ofnode_read_string(dst, "compatible"));
/* check that a property with the same name is overwritten */
ut_assertok(ofnode_read_u32_array(dst, "reg", reg, ARRAY_SIZE(reg)));
ut_asserteq(3, reg[0]);
ut_asserteq(1, reg[1]);
/* reset the compatible so the live tree does not change */
ut_assertok(ofnode_write_string(dst, "compatible", "nothing"));
return 0;
}
static int dm_test_ofnode_copy_props(struct unit_test_state *uts)
{
ofnode src, dst;
/*
* These nodes are chosen so that the src node is before the destination
* node in the tree. This doesn't matter with livetree, but with
* flattree any attempt to insert a property earlier in the tree will
* mess up the offsets after it.
*/
src = ofnode_path("/b-test");
dst = ofnode_path("/some-bus");
ut_assertok(check_copy_props(uts, src, dst));
/* check a property that is in the destination already */
ut_asserteq_str("mux0", ofnode_read_string(dst, "mux-control-names"));
return 0;
}
DM_TEST(dm_test_ofnode_copy_props, UT_TESTF_SCAN_FDT);
static int dm_test_ofnode_copy_props_ot(struct unit_test_state *uts)
{
ofnode src, dst;
oftree otree = get_other_oftree(uts);
src = ofnode_path("/b-test");
dst = oftree_path(otree, "/node/subnode2");
ut_assertok(check_copy_props(uts, src, dst));
return 0;
}
DM_TEST(dm_test_ofnode_copy_props_ot, UT_TESTF_SCAN_FDT | UT_TESTF_OTHER_FDT);