On Wed, Jan 08, 2020 at 10:38:32PM +0100, Anatolij Gustschin wrote: > This can be used for device tree size reduction similar as > CONFIG_OF_SPL_REMOVE_PROPS option. For tbs2910 board this > shrinks the image size: all -2304.0 bss -16.0 text -2288.0 > > Signed-off-by: Anatolij Gustschin <ag...@denx.de> > --- > dts/Kconfig | 8 ++++++++ > scripts/Makefile.lib | 3 ++- > 2 files changed, 10 insertions(+), 1 deletion(-) > > diff --git a/dts/Kconfig b/dts/Kconfig > index 64c98dd723..49224bee93 100644 > --- a/dts/Kconfig > +++ b/dts/Kconfig > @@ -311,6 +311,14 @@ config OF_SPL_REMOVE_PROPS > can be discarded. This option defines the list of properties to > discard. > > +config OF_REMOVE_PROPS > + string "List of device tree properties to drop" > + depends on OF_CONTROL > + 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/scripts/Makefile.lib b/scripts/Makefile.lib > index 4ea898a421..3b124369ad 100644 > --- a/scripts/Makefile.lib > +++ b/scripts/Makefile.lib > @@ -235,7 +235,8 @@ $(obj)/%.tab.h: $(src)/%.y FORCE > # =========================================================================== > > quiet_cmd_shipped = SHIPPED $@ > -cmd_shipped = cat $< > $@ > +cmd_shipped = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ > + $(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS))) > > $(obj)/%: $(src)/%_shipped > $(call cmd,shipped)
On further thinking, this will make it harder in the case of passing the DTB directly to the kernel. We should guard this option by something else first. -- Tom
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