Some minor improvement to some comments.

arch/arm/src/samv7/Kconfig

@@ -1821,13 +1821,18 @@ config SAMV7_EMAC0_NRXBUFFERS
 		descriptors that will be allocated  The selected value must be an
 		even power of 2.
 
+		NOTE that the defaut of 16 correspond to a total of only 2Kb of
+		RX buffering.  That can easily exceeded on a busy network or with
+		large packet MTUs.  You will know if this happens because you will
+		see the "Buffer Not Available (BNA)" receive error.
+
 config SAMV7_EMAC0_NTXBUFFERS
 	int "Number of TX buffers"
 	default 8
 	---help---
 		EMAC buffer memory is segmented into full Ethernet packets (size
-		NET_BUFSIZE bytes).  This setting provides the number of such packets
-		that can be in flight.  This is also equal to the number of TX
+		CONFIG_NET_BUFSIZE bytes).  This setting provides the number of such
+		packets that can be in flight.  This is also equal to the number of TX
 		descriptors that will be allocated.
 
 config SAMV7_EMAC0_PHYADDR

arch/arm/src/tiva/cc13xx/cc13xx_start.c

@@ -280,7 +280,7 @@ void __start(void)
   showprogress('F');
 #endif
 
-  /* Initialize onboard resources */
+  /* Initialize on-board resources */
 
   tiva_boardinitialize();
   showprogress('G');