diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 4b02d8acc15b08afd60bf1632c7366fad95a1a96..e7d542d45605fe70320525d8a6a64f6d6352002d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -558,9 +558,7 @@ config TOSHIBA_RBTX4927
 
 config TOSHIBA_RBTX4938
 	bool "Toshiba RBTX4938 board"
-	select HAVE_STD_PC_SERIAL_PORT
 	select DMA_NONCOHERENT
-	select GENERIC_ISA_DMA
 	select HAS_TXX9_SERIAL
 	select HW_HAS_PCI
 	select IRQ_CPU