From 127d5d672ec9a72125502243bccbb0578917ceec Mon Sep 17 00:00:00 2001
From: Funda Wang <fundawang@yeah.net>
Date: Tue, 29 Sep 2026 22:37:29 +0800
Subject: [PATCH] scripts: dtc: adapt DTC_FLAGS for external dtc 1.8
Two adjustments needed when building with a system dtc newer than the
in-tree snapshot:
1. The graph_child_address check was removed from upstream dtc
(v1.7.2+, commit cba90ce82064 "checks: Remove check for graph child
addresses"). dtc aborts with "FATAL ERROR: Unrecognized check name"
when passed -Wno- for a check that no longer exists. Drop the flag,
following the same fix applied in the Linux kernel.
2. The node_name_not_empty check was added in upstream dtc (commit
7c78c8542d73 "Added empty node name check"). It reports an ERROR on
binman generator/template nodes like @fdt-SEQ and @config-SEQ, whose
names are expanded by binman after dtc runs, so the check is a false
positive here. Use -Eno- to clear only the error level of that check
and leave the rest untouched, the same way ALT Linux handles it.
scripts/Makefile.lib | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
@@ -300,7 +300,6 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
-Wno-unit_address_format \
-Wno-avoid_unnecessary_addr_size \
-Wno-alias_paths \
- -Wno-graph_child_address \
-Wno-graph_port \
-Wno-unique_unit_address \
-Wno-simple_bus_reg \
@@ -311,6 +310,10 @@ DTC_FLAGS += -Wno-pci_bridge \
-Wno-pci_device_bus_num
endif
+# binman template nodes (@fdt-SEQ etc.) have empty names by design;
+# the names are expanded by binman after dtc runs
+DTC_FLAGS += -Eno-node_name_not_empty
+
ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
DTC_FLAGS += -Wnode_name_chars_strict \
-Wproperty_name_chars_strict
