package/boot/uboot-sunxi/patches/220-compatible-old-dtc.patch

   1 Revert the commit c0e032e0090d65 ("scripts/dtc: Update to upstream
   2 version v1.4.3")
   3 OpenWrt uses the dtc from the kernel also in u-boot, but when we compile
   4 against kernel 4.9 we run into some errors because it is too old now.
   5 Add the options only when they are supported to make it compatible with
   6 dtc from kernel 4.9.
   7
   8 --- a/scripts/Kbuild.include
   9 +++ b/scripts/Kbuild.include
  10 @@ -172,6 +172,11 @@ ld-version = $(shell $(LD) --version | $
  11  # Usage:  $(call ld-ifversion, -ge, 22252, y)
  12  ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3) || echo $(4))
  13
  14 +# dtc-option
  15 +# Usage:  DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg)
  16 +dtc-option = $(call try-run,\
  17 +       echo '/dts-v1/; / {};' | $(DTC) $(1),$(1),$(2))
  18 +
  19  ######
  20
  21  ###
  22 --- a/scripts/Makefile.extrawarn
  23 +++ b/scripts/Makefile.extrawarn
  24 @@ -58,8 +58,8 @@ endif
  25
  26  KBUILD_CFLAGS += $(warning)
  27
  28 -dtc-warning-2 += -Wnode_name_chars_strict
  29 -dtc-warning-2 += -Wproperty_name_chars_strict
  30 +dtc-warning-2 += $(call dtc-option,-Wnode_name_chars_strict)
  31 +dtc-warning-2 += $(call dtc-option,-Wproperty_name_chars_strict)
  32
  33  dtc-warning := $(dtc-warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
  34  dtc-warning += $(dtc-warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
  35 @@ -70,11 +70,11 @@ DTC_FLAGS += $(dtc-warning)
  36  else
  37
  38  # Disable noisy checks by default
  39 -DTC_FLAGS += -Wno-unit_address_vs_reg
  40 -DTC_FLAGS += -Wno-simple_bus_reg
  41 -DTC_FLAGS += -Wno-unit_address_format
  42 -DTC_FLAGS += -Wno-pci_bridge
  43 -DTC_FLAGS += -Wno-pci_device_bus_num
  44 -DTC_FLAGS += -Wno-pci_device_reg
  45 +DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg)
  46 +DTC_FLAGS += $(call dtc-option,-Wno-simple_bus_reg)
  47 +DTC_FLAGS += $(call dtc-option,-Wno-unit_address_format)
  48 +DTC_FLAGS += $(call dtc-option,-Wno-pci_bridge)
  49 +DTC_FLAGS += $(call dtc-option,-Wno-pci_device_bus_num)
  50 +DTC_FLAGS += $(call dtc-option,-Wno-pci_device_reg)
  51
  52  endif