1 files changed, 3 insertions, 0 deletions

diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
index b95d033ae6e6..ae2ea803a0f2 100644
--- a/include/asm-powerpc/pci-bridge.h
+++ b/include/asm-powerpc/pci-bridge.h
@@ -92,12 +92,15 @@ struct pci_controller {
          *   anything but the PHB.  Only allow talking to the PHB if this is
          *   set.
          *  BIG_ENDIAN - cfg_addr is a big endian register
+         *  BROKEN_MRM - the 440EPx/GRx chips have an errata that causes hangs on
+         *   the PLB4.  Effectively disable MRM commands by setting this.
          */
 #define PPC_INDIRECT_TYPE_SET_CFG_TYPE          0x00000001
 #define PPC_INDIRECT_TYPE_EXT_REG               0x00000002
 #define PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS  0x00000004
 #define PPC_INDIRECT_TYPE_NO_PCIE_LINK          0x00000008
 #define PPC_INDIRECT_TYPE_BIG_ENDIAN            0x00000010
+#define PPC_INDIRECT_TYPE_BROKEN_MRM            0x00000020
         u32 indirect_type;
 #endif  /* !CONFIG_PPC64 */
         /* Currently, we limit ourselves to 1 IO range and 3 mem