+#elif defined(CONFIG_ARCH_AT91SAM9G20)
+
+#define AT91SAM9_MASTER_CLOCK 132096000
+#define CLOCK_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91CAP9)
+
+#define AT91CAP9_MASTER_CLOCK 100000000
+#define CLOCK_TICK_RATE (AT91CAP9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91X40)
+
+#define AT91X40_MASTER_CLOCK 40000000
+#define CLOCK_TICK_RATE (AT91X40_MASTER_CLOCK)
+