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+.. _skiboot-5.9.6:
+
+=============
+skiboot-5.9.6
+=============
+
+skiboot 5.9.6 was released on Friday December 15th, 2017. It replaces
+:ref:`skiboot-5.9.5` as the current stable release in the 5.9.x series.
+
+Over :ref:`skiboot-5.9.5`, we have a few bug fixes, they are:
+
+- sensors: occ: Skip counter type of sensors
+
+  Don't add counter type of sensors to device-tree as they don't
+  fit into hwmon sensor interface.
+- p9_stop_api updates to support IMC across deep stop states.
+- opal/xscom: Add recovery for lost core wakeup scom failures.
+
+  Due to a hardware issue where core responding to scom was delayed due to
+  thread reconfiguration, leaves the SCOM logic in a state where the
+  subsequent scom to that core can get errors. This is affected for Core
+  PC scom registers in the range of 20010A80-20010ABF
+
+  The solution is if a xscom timeout occurs to one of Core PC scom registers
+  in the range of 20010A80-20010ABF, a clearing scom write is done to
+  0x20010800 with data of '0x00000000' which will also get a timeout but
+  clears the scom logic errors. After the clearing write is done the original
+  scom operation can be retried.
+
+  The scom timeout is reported as status 0x4 (Invalid address) in HMER[21-23].