diff --git a/fw/common/regs-f320.h b/fw/common/regs-f320.h
index 531e6d9..c260f40 100644
--- a/fw/common/regs-f320.h
+++ b/fw/common/regs-f320.h
@@ -39,4 +39,13 @@
 #define	XBARE	0x40	/* Crossbar Enable */
 #define	WEAKPUD	0x80	/* Port I/O Weak Pull-up Disable */
 
+/* TMOD, extending f32x */
+#define	C_T0	0x04	/* Counter/Timer Select */
+
+/* CKCON, extending f32x */
+#define	T2ML	0x10	/* Timer 2 Low Byte Clock Select */
+#define	T2MH	0x20	/* Timer 2 High Byte Clock Select */
+#define	T3ML	0x40	/* Timer 3 Low Byte Clock Select */
+#define	T3MH	0x80	/* Timer 3 High Byte Clock Select */
+
 #endif /* REGS_F320_H */
diff --git a/fw/common/regs-f32x.h b/fw/common/regs-f32x.h
index 07809e6..63b0210 100644
--- a/fw/common/regs-f32x.h
+++ b/fw/common/regs-f32x.h
@@ -72,4 +72,28 @@
 #define	SB0RUN	0x40	/* Baud Rate Generator Enable */
 #define	SB0CLK	0x80	/* Baud Rate Clock Source */
 
+/* TCON */
+#define	IT0	0x01	/* Interrupt 0 Type Select */
+#define	IE0	0x02	/* External Interrupt 0 */
+#define	IT1	0x04	/* Interrupt 1 Type Select */
+#define	IE1	0x08	/* External Interrupt 1 */
+#define	TR0	0x10	/* Timer 0 Run Control */
+#define	TF0	0x20	/* Timer 0 Overflow Flag */
+#define	TR1	0x40	/* Timer 1 Run Control */
+#define	TF1	0x80	/* Timer 1 Overflow Flag */
+
+/* TMOD */
+#define	T0M0	0x01	/* Timer 0 Mode Select */
+#define	T0M1	0x02
+#define	GATE0	0x08	/* Timer 0 Gate Control */
+#define	T1M0	0x10	/* Timer 1 Mode Select */
+#define	T1M1	0x20
+#define	GATE1	0x80	/* Timer 1 Gate Control */
+
+/* CKCON */
+#define	SCA0	0x01	/* Timer 0/1 Prescale Bits */
+#define	SCA1	0x02
+#define	T0M	0x04	/* Timer 0 Clock Select */
+#define	T1M	0x08	/* Timer 0 Clock Select */
+
 #endif /* REGS_F32X_H */