Add minor tweaks to I2C Callouts for UCD

Adds some comments and collects traces for Ucd Errors.

Change-Id: I431684a2ff2f5466bd6f9f917e902ffc45809d7d
RTC:205982
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/74854
Reviewed-by: Michael Baiocchi <mbaiocch@us.ibm.com>
Reviewed-by: Glenn Miles <milesg@ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/src/usr/i2c/i2c.C b/src/usr/i2c/i2c.C
index 5cf3944e5..7f696c4e6 100755
--- a/src/usr/i2c/i2c.C
+++ b/src/usr/i2c/i2c.C
@@ -5617,8 +5617,9 @@ void addHwCalloutsI2c(errlHndl_t i_err,
                                    HWAS::SRCI_PRIORITY_HIGH);
     }
     // For FSP systems which don't yet have special handling for
-    // i2c device callouts we still need to handle the TPM search
-    // to avoid regression back to the "non TPM aware" behavior.
+    // i2c device callouts we still need to handle the TPM and UCD
+    // search to avoid regression back to the "non TPM aware" and
+    // "non UCD aware" behavior.
     else
     {
         // Loop thru TPMs in the system and match physical path,
@@ -5655,6 +5656,8 @@ void addHwCalloutsI2c(errlHndl_t i_err,
             }
         }
 
+        // Right now we are assuming that we never have a UCD on the same bus
+        // as a TPM
         if (!l_devFound)
         {
             // Loop thru the UCDs in the system and match physical path,