diff --git a/arch b/arch
index 6190d66466..da550063e6 160000
--- a/arch
+++ b/arch
@@ -1 +1 @@
-Subproject commit 6190d664666b19580969c4e620646ef4e54f0182
+Subproject commit da550063e6081057d2324b76c8ac065ed6fe1d6f
diff --git a/configs b/configs
index ac4035687c..c779f69eb4 160000
--- a/configs
+++ b/configs
@@ -1 +1 @@
-Subproject commit ac4035687c824bb4a573e06feb017cb4f3ce7626
+Subproject commit c779f69eb4070272ef136a27124223bddafec5a1
diff --git a/include/nuttx/spi/slave.h b/include/nuttx/spi/slave.h
index ac551e79f6..eb557252e6 100644
--- a/include/nuttx/spi/slave.h
+++ b/include/nuttx/spi/slave.h
@@ -398,8 +398,10 @@
  *    the first word send is a command to read or write something following
  *    by a sequence of transfers to implement the write.  So you have very,
  *    very limited time window to setup the correct DMA to respond to the
- *    command.  DMA setup time can be longer.  And I am not sure it I can
- *    make it reliable.
+ *    command.  I am not certain that it can be done reliably.
+ *
+ *    Inserting dummy words into the protocol between the first command word
+ *    and the remaining data transfer could allow time to set up the DMA.
  *
  * 3) I mentioned that you do not know the size of the transfer in advance.
  *    If you set up the DMA to terminate to soon, then you lose the last part