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| author | Anatolij Gustschin <agust@denx.de> | 2020-01-12 15:57:42 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-01-27 19:54:20 -0500 |
| commit | 43b6e38b27a19f3d193ecf60d62091ab3f737a3e (patch) | |
| tree | 261a45882c280a24f16b7cd0e5e8877d2c69a0e0 /dts | |
| parent | 051e03c0d76b7ce9d4649f76f5be979d8f88e765 (diff) | |
| download | u-boot-43b6e38b27a19f3d193ecf60d62091ab3f737a3e.tar.gz u-boot-43b6e38b27a19f3d193ecf60d62091ab3f737a3e.tar.xz u-boot-43b6e38b27a19f3d193ecf60d62091ab3f737a3e.zip | |
dts: add property removal option CONFIG_OF_REMOVE_PROPS
This can be used for device tree size reduction similar as
CONFIG_OF_SPL_REMOVE_PROPS option. Some boards must pass the
built-in DTB unchanged to the kernel, thus we may not cut it
down unconditionally. Therefore enable the property removal
list option only if CONFIG_OF_DTB_PROPS_REMOVE is selected.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'dts')
| -rw-r--r-- | dts/Kconfig | 20 | ||||
| -rw-r--r-- | dts/Makefile | 5 |
2 files changed, 25 insertions, 0 deletions
diff --git a/dts/Kconfig b/dts/Kconfig index d3313dd08f..046a54a173 100644 --- a/dts/Kconfig +++ b/dts/Kconfig @@ -314,6 +314,26 @@ config OF_SPL_REMOVE_PROPS can be discarded. This option defines the list of properties to discard. +config OF_DTB_PROPS_REMOVE + bool "Enable removal of device tree properties" + depends on OF_CONTROL + help + Some boards have restricted amount of storage for U-Boot image. + If the generated binary doesn't fit into available image storage, + the built-in device tree could probably be cut down by removing + some not required device tree properties to reduce the image size. + Enable this option and define the properties to be removed in the + CONFIG_OF_REMOVE_PROPS list. Do not enable this option if you must + pass the built-in DTB directly to the kernel! + +config OF_REMOVE_PROPS + string "List of device tree properties to drop" + depends on OF_DTB_PROPS_REMOVE + default "interrupt-parent interrupts" if PINCTRL + help + Some properties are not used by U-Boot and can be discarded. + This option defines the list of properties to discard. + config SPL_OF_PLATDATA bool "Generate platform data for use in SPL" depends on SPL_OF_CONTROL diff --git a/dts/Makefile b/dts/Makefile index 1f83e615e8..a20930eb9a 100644 --- a/dts/Makefile +++ b/dts/Makefile @@ -19,8 +19,13 @@ endif $(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE $(call if_changed,fdtgrep) +ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y) +$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE + $(call if_changed,fdt_rm_props) +else $(obj)/dt.dtb: $(DTB) FORCE $(call if_changed,shipped) +endif targets += dt.dtb dt-spl.dtb |