DCB_CRS_SHIFT
# define XM9_CRS_CONFIG (0 << DCB_CRS_SHIFT)
# define XM9_CRS_REVISION (1 << DCB_CRS_SHIFT)
# define XM9_CRS_FIFO_AVAIL (2 << DCB_CRS_SHIFT)
# define XM9_CRS_CURS_CMAP_MSB (3 << DCB_CRS_SHIFT)
# define XM9_CRS_PUP_CMAP_MSB (4 << DCB_CRS_SHIFT)
# define XM9_CRS_MODE_REG_DATA (5 << DCB_CRS_SHIFT)
# define XM9_CRS_MODE_REG_INDEX (7 << DCB_CRS_SHIFT)
#define BT445_CSR_ADDR_REG (0 << DCB_CRS_SHIFT)
#define BT445_CSR_REVISION (2 << DCB_CRS_SHIFT)