diff --git a/arch/sh/configs/rts7751r2d_defconfig b/arch/sh/configs/rts7751r2d_defconfig
index f1e979b1e495..b64f73b704d6 100644
--- a/arch/sh/configs/rts7751r2d_defconfig
+++ b/arch/sh/configs/rts7751r2d_defconfig
@@ -243,8 +243,8 @@ CONFIG_SH_PCLK_FREQ=60000000
 #
 # DMA support
 #
-CONFIG_SH_DMA=y
-CONFIG_NR_ONCHIP_DMA_CHANNELS=8
+# CONFIG_SH_DMA is not set
+# CONFIG_NR_ONCHIP_DMA_CHANNELS is not set
 # CONFIG_NR_DMA_CHANNELS_BOOL is not set
 
 #
@@ -280,7 +280,7 @@ CONFIG_ZERO_PAGE_OFFSET=0x00010000
 CONFIG_BOOT_LINK_OFFSET=0x00800000
 # CONFIG_UBC_WAKEUP is not set
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=tty0 console=ttySC0,115200 root=/dev/sda1 earlyprintk=bios"
+CONFIG_CMDLINE="console=tty0 console=ttySC0,115200 root=/dev/sda1 earlyprintk=serial"
 
 #
 # Bus options
@@ -1323,7 +1323,7 @@ CONFIG_ENABLE_MUST_CHECK=y
 # CONFIG_DEBUG_KERNEL is not set
 CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_DEBUG_BUGVERBOSE is not set
-CONFIG_SH_STANDARD_BIOS=y
+# CONFIG_SH_STANDARD_BIOS is not set
 CONFIG_EARLY_SCIF_CONSOLE=y
 CONFIG_EARLY_SCIF_CONSOLE_PORT=0xffe80000
 CONFIG_EARLY_PRINTK=y