diff --git a/arch/arm/src/lpc54xx/lpc54_sdmmc.c b/arch/arm/src/lpc54xx/lpc54_sdmmc.c
index 9c2e0eef1fe..b5575e28b9b 100644
--- a/arch/arm/src/lpc54xx/lpc54_sdmmc.c
+++ b/arch/arm/src/lpc54xx/lpc54_sdmmc.c
@@ -680,7 +680,7 @@ static void lpc54_setupints(struct lpc54_dev_s *priv)
 
 #else
   mcinfo("waitmask=%04lx xfrmask=%04lx\n",
-         (unsigned long)waitmask, (unsigned long)priv->xfrmask);
+         (unsigned long)priv->waitmask, (unsigned long)priv->xfrmask);
 #endif
 
   /* Enable SDMMC interrupts */
@@ -1671,7 +1671,7 @@ static int lpc54_recvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
     {
       blocksize = 64;
       bytecnt   = nbytes;
-      DEBUGASSERT((nbytes & ~0x3f) == 0);
+      DEBUGASSERT((nbytes & 0x3f) == 0);
     }
 
   lpc54_putreg(blocksize, LPC54_SDMMC_BLKSIZ);
@@ -2423,7 +2423,7 @@ static int lpc54_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
 
       /* Setup buffer address (chained) */
 
-      g_sdmmc_dmadd[i].des2 = (uint32_t) priv->buffer + (i * MCI_DMADES1_MAXTR);
+      g_sdmmc_dmadd[i].des2 = (uint32_t)priv->buffer + (i * MCI_DMADES1_MAXTR);
 
       /* Setup basic control */
 
@@ -2436,7 +2436,7 @@ static int lpc54_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
 
       /* No more data? Then this is the last descriptor */
 
-      if (!buflen)
+      if (buflen == 0)
         {
           ctrl |= MCI_DMADES0_LD;
         }
diff --git a/configs/lpcxpresso-lpc54628/README.txt b/configs/lpcxpresso-lpc54628/README.txt
index 71c80ec82c1..01dfb72dfee 100644
--- a/configs/lpcxpresso-lpc54628/README.txt
+++ b/configs/lpcxpresso-lpc54628/README.txt
@@ -62,9 +62,13 @@ STATUS
     functional.  However, the action of the touchscreen could use some
     human factors improvements.  I imagine that this is a consequence of
     the polled solution.
-  2017-12-29:   Brought in Alan Carvalho de Assis' LPC43xx SD/MMC driver from
+  2017-12-19:  Brought in Alan Carvalho de Assis' LPC43xx SD/MMC driver from
     https://github.com/Smoothieware/smoothie-nuttx/tree/master/nuttx/arch/arm/src/lpc43xx
     and adapted it for use by the LPC54xx.  Unverified as of this writing.
+  2017-12-21:  Some things are working with he SDMMC drivers but read DMAs
+    are non-functional and, hence not usable.  The nature of the problem is
+    this:  The DMA appears to complete normally, however, the application
+    receive buffer is not modified.  Nothing is actually received.
 
   There is still no support for the Accelerometer, SPIFI, SD card, Ethernet,
   or USB.  There is a partial SPI driver, but no on-board SPI devices to
@@ -310,6 +314,33 @@ Configurations
        configuration.  Snappier response my be obtainble with filtering off
        if desired.
 
+    5. This configuration has been used for testing the SDMMC driver with
+       these configuration additions:
+
+         CONFIG_EXPERIMENTAL=y
+
+         CONFIG_LPC54_SDMMC=y
+         CONFIG_LPC54_SDMMC_PWRCTRL=y
+         CONFIG_LPC54_SDMMC_DMA=y
+
+         CONFIG_SIG_SIGWORK=17
+         CONFIG_SCHED_WORKQUEUE=y
+         CONFIG_SCHED_HPWORK=y
+         CONFIG_SCHED_HPWORKPRIORITY=224
+         CONFIG_SCHED_HPWORKPERIOD=50000
+         CONFIG_SCHED_HPWORKSTACKSIZE=2048
+
+         CONFIG_MMCSD=y
+         CONFIG_MMCSD_NSLOTS=1
+         CONFIG_MMCSD_MULTIBLOCK_DISABLE=y
+         CONFIG_MMCSD_HAVE_CARDDETECT=y
+         CONFIG_MMCSD_HAVE_WRITEPROTECT=y
+         CONFIG_ARCH_HAVE_SDIO=y
+         CONFIG_SDIO_DMA=y
+         CONFIG_MMCSD_SDIO=y
+
+         CONFIG_NSH_MMCSDSLOTNO=0
+
   nxwm:
 
     This is a special configuration setup for the NxWM window manager