diff --git a/p9_cfam.hpp b/p9_cfam.hpp
index 07b251d..0cf5c02 100644
--- a/p9_cfam.hpp
+++ b/p9_cfam.hpp
@@ -6,8 +6,12 @@
 {
 namespace p9
 {
+
+static constexpr uint32_t P9_DD10_CHIPID           = 0x120D1049;
+
 static constexpr uint16_t P9_FSI_A_SI1S            = 0x081C;
 static constexpr uint16_t P9_LL_MODE_REG           = 0x0840;
+static constexpr uint16_t P9_FSI2PIB_CHIPID        = 0x100A;
 static constexpr uint16_t P9_FSI2PIB_INTERRUPT     = 0x100B;
 static constexpr uint16_t P9_FSI2PIB_TRUE_MASK     = 0x100D;
 static constexpr uint16_t P9_CBS_CS                = 0x2801;