diff --git a/ports/arm/platforms/dm36x/dm36x-io.h b/ports/arm/platforms/dm36x/dm36x-io.h
index 0457e1f..d420359 100644
--- a/ports/arm/platforms/dm36x/dm36x-io.h
+++ b/ports/arm/platforms/dm36x/dm36x-io.h
@@ -163,8 +163,11 @@
 
 /** Power and sleep controller registers */
 #define DM36X_PSC_BASE          0x01C41000 /* PSC registers */
+#define DM36X_PSC_EPCPR         0x070
 #define DM36X_PSC_PTCMD         0x120
 #define DM36X_PSC_PTSTAT        0x128
+#define DM36X_PSC_PDSTAT        0x200
+#define DM36X_PSC_PDCTL1        0x304
 #define DM36X_PSC_MDSTAT_I2C    0x800 + (18 * 4)
 #define DM36X_PSC_MDCTL_I2C     0xA00 + (18 * 4)