diff --git a/arch/arm/src/sama5/sam_isi.c b/arch/arm/src/sama5/sam_isi.c
index 979517fc7f..b0c82c47af 100644
--- a/arch/arm/src/sama5/sam_isi.c
+++ b/arch/arm/src/sama5/sam_isi.c
@@ -41,6 +41,7 @@
 
 #include <debug.h>
 
+#include "sam_memories.h"
 #include "sam_pio.h"
 #include "sam_pck.h"
 #include "sam_isi.h"
@@ -172,6 +173,11 @@ int sam_isi_initialize(void)
   /* Configure color */
 #warning Missing logic
 
+  /* Configure decimation */
+#warning Missing logic
+
+  /* Configure DMA */
+#warning Missing logic
 }
 
 #endif /* CONFIG_SAMA5_ISI && CONFIG_SAMA5_EMAC */
diff --git a/arch/arm/src/sama5/sam_pck.c b/arch/arm/src/sama5/sam_pck.c
index 0e33c91551..b07b1df859 100644
--- a/arch/arm/src/sama5/sam_pck.c
+++ b/arch/arm/src/sama5/sam_pck.c
@@ -41,6 +41,8 @@
 
 #include <debug.h>
 
+#include "chip/sam_pinmap.h"
+#include "sam_pio.h"
 #include "sam_isi.h"
 
 #ifdef CONFIG_SAMA5_ISI
@@ -159,22 +161,27 @@ uint32_t sam_pck_configure(enum pckid_e pckid, uint32_t frequency)
       return -ERANGE;
     }
 
-  /* Disable the programmable clock then set the selected configuration */
+  /* Disable the programmable clock, configure the PCK output pin, then set
+   * the selected configuration.
+   */
 
   switch (pckid)
     {
     case PCK0:
       putreg32(PMC_PCK0, SAM_PMC_SCDR);
+      (void)sam_configpio(PIO_PMC_PCK0);
       putreg32(regval, SAM_PMC_PCK0);
       break;
 
     case PCK1:
       putreg32(PMC_PCK1, SAM_PMC_SCDR);
+      (void)sam_configpio(PIO_PMC_PCK1);
       putreg32(regval, SAM_PMC_PCK1);
       break;
 
     case PCK2:
       putreg32(PMC_PCK2, SAM_PMC_SCDR);
+      (void)sam_configpio(PIO_PMC_PCK2);
       putreg32(regval, SAM_PMC_PCK2);
       break;