On Mon, Jul 02, 2018 at 09:33:51PM -0600, Rob Herring wrote:

quoted

+config CSKY_BUILTIN_DTB
+       bool "Use kernel builtin dtb"
+
+config CSKY_BUILTIN_DTB_NAME
+       string "kernel builtin dtb name"
+       depends on CSKY_BUILTIN_DTB
+endmenu

These options generally exist for backwards compatibility with legacy
bootloaders that don't support DT which shouldn't apply here given
this is a new arch. If we need this for other reasons, it should not
be an architecture specific option.

We want the BUILTIN_DTB for some boards and they don't need change dtb
at all. And I just follow other archs BUILTIN_DTB in their Kconfig. eg:
xtensa, h8300, mips, nds32, sh, openrisc, arc ...

I just keep this in Kconfig.debug and it's not a recommended method.

Guo Ren