diff --git a/configs/open1788/knsh/defconfig b/configs/open1788/knsh/defconfig
index addfd82ada9..291740f8e25 100755
--- a/configs/open1788/knsh/defconfig
+++ b/configs/open1788/knsh/defconfig
@@ -191,8 +191,7 @@ CONFIG_LPC17_GPDMA=y
 #
 # SDIO Configuration
 #
-# CONFIG_SDIO_DMA=y
-CONFIG_SDIO_DMAPRIO=0x0
+# CONFIG_SDIO_DMA is not defined
 # CONFIG_SDIO_WIDTH_D1_ONLY is not set
 
 #
diff --git a/configs/open1788/nsh/defconfig b/configs/open1788/nsh/defconfig
index d4139111abb..27ae8582947 100644
--- a/configs/open1788/nsh/defconfig
+++ b/configs/open1788/nsh/defconfig
@@ -185,8 +185,7 @@ CONFIG_LPC17_GPDMA=y
 #
 # SDIO Configuration
 #
-# CONFIG_SDIO_DMA=y
-CONFIG_SDIO_DMAPRIO=0x0
+# CONFIG_SDIO_DMA is not defined
 # CONFIG_SDIO_WIDTH_D1_ONLY is not set
 
 #
diff --git a/configs/open1788/scripts/memory.ld b/configs/open1788/scripts/memory.ld
index 690c7d3d625..33f93a195ee 100644
--- a/configs/open1788/scripts/memory.ld
+++ b/configs/open1788/scripts/memory.ld
@@ -57,7 +57,8 @@
  *
  * For the same reasons, the maximum size of the SRAM mapping is limited to
  * 4KB.  Both of these alignment limitations could be reduced by using
- * multiple regions to map the FLASH/SDRAM range.
+ * multiple regions to map the FLASH/SDRAM range or perhaps with some
+ * clever use of subregions.
  *
  * A detailed memory map for the 64KB CPU SRAM region is as follows:
  *
diff --git a/configs/sam3u-ek/scripts/memory.ld b/configs/sam3u-ek/scripts/memory.ld
index 43fca9478fc..c99a311465f 100644
--- a/configs/sam3u-ek/scripts/memory.ld
+++ b/configs/sam3u-ek/scripts/memory.ld
@@ -58,7 +58,8 @@
  *
  * For the same reasons, the maximum size of the SRAM mapping is limited to
  * 4KB.  Both of these alignment limitations could be reduced by using
- * multiple regions to map the FLASH/SDRAM range.
+ * multiple regions to map the FLASH/SDRAM range or perhaps with some
+ * clever use of subregions.
  *
  * A detailed memory map for the 16Kb SRAM region is as follows:
  *
diff --git a/configs/stm32f4discovery/scripts/memory.ld b/configs/stm32f4discovery/scripts/memory.ld
index 0cf99ef9679..ffe8054dba5 100644
--- a/configs/stm32f4discovery/scripts/memory.ld
+++ b/configs/stm32f4discovery/scripts/memory.ld
@@ -65,7 +65,8 @@
  *
  * For the same reasons, the maximum size of the SRAM mapping is limited to
  * 4KB.  Both of these alignment limitations could be reduced by using
- * multiple regions to map the FLASH/SDRAM range.
+ * multiple regions to map the FLASH/SDRAM range or perhaps with some
+ * clever use of subregions.
  *
  * A detailed memory map for the 112KB SRAM region is as follows:
  *