diff --git a/arch/xtensa/Kbuild b/arch/xtensa/Kbuild
index a4e40e534e6a..fd12f61745ba 100644
--- a/arch/xtensa/Kbuild
+++ b/arch/xtensa/Kbuild
@@ -1 +1,2 @@
 # SPDX-License-Identifier: GPL-2.0-only
+obj-y += kernel/ mm/ platforms/ boot/dts/
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 093e87b889be..96714ef7c89e 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -58,9 +58,6 @@ KBUILD_DEFCONFIG := iss_defconfig
 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 
 head-y		:= arch/xtensa/kernel/head.o
-core-y		+= arch/xtensa/kernel/ arch/xtensa/mm/
-core-y		+= arch/xtensa/platforms/$(platform-y)/
-core-y 		+= arch/xtensa/boot/dts/
 
 libs-y		+= arch/xtensa/lib/ $(LIBGCC)
 
diff --git a/arch/xtensa/platforms/Makefile b/arch/xtensa/platforms/Makefile
new file mode 100644
index 000000000000..e2e7e0726979
--- /dev/null
+++ b/arch/xtensa/platforms/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_XTENSA_PLATFORM_XT2000)	+= xt2000/
+obj-$(CONFIG_XTENSA_PLATFORM_ISS)	+= iss/
+obj-$(CONFIG_XTENSA_PLATFORM_XTFPGA)	+= xtfpga/