+/*
+ * CR_R1 is a register found in the R40's DRAM controller. It sets various
+ * parameters for rank 1. Bits [11:0] have the same meaning as the bits in
+ * MCTL_CR, but they apply to rank 1 only. This implies we can have
+ * different chips for rank 1 than rank 0.
+ *
+ * As address line A15 and CS1 chip select for rank 1 are muxed on the same
+ * pin, if single rank is used, A15 must be muxed in.
+ */
+#define MCTL_CR_R1_MUX_A15 (0x1 << 21)
+