diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index cea2f09c4241..18e3b76c78d7 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -124,9 +124,8 @@ config 6xx
 	select PPC_HAVE_PMU_SUPPORT
 
 config POWER3
-	bool
 	depends on PPC64 && PPC_BOOK3S
-	default y if !POWER4_ONLY
+	def_bool y
 
 config POWER4
 	depends on PPC64 && PPC_BOOK3S
@@ -145,8 +144,7 @@ config TUNE_CELL
 	  but somewhat slower on other machines. This option only changes
 	  the scheduling of instructions, not the selection of instructions
 	  itself, so the resulting kernel will keep running on all other
-	  machines. When building a kernel that is supposed to run only
-	  on Cell, you should also select the POWER4_ONLY option.
+	  machines.
 
 # this is temp to handle compat with arch=ppc
 config 8xx