skiboot 5.9.7 release notes

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
(cherry picked from commit 2bbe8b84b87d97220809c09e8dfcf756287012e7)
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 28 insertions, 0 deletions

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+.. _skiboot-5.9.7:
+
+=============
+skiboot-5.9.7
+=============
+
+skiboot 5.9.7 was released on Friday December 22nd, 2017. It replaces
+:ref:`skiboot-5.9.6` as the current stable release in the 5.9.x series.
+
+Over :ref:`skiboot-5.9.6`, we have two bug fixes, they are:
+
+- phb4: Change PCI MMIO timers
+
+  Currently we have a mismatch between the NCU and PCI timers for MMIO
+  accesses. The PCI timers must be lower than the NCU timers otherwise
+  it may cause checkstops.
+
+  This changes PCI timeouts controlled by skiboot to 33-50ms. It should
+  be forwards and backwards compatible with expected hostboot changes to
+  the NCU timer.
+- p8-i2c: Limit number of retry attempts
+
+  Currently we will attempt to start an I2C transaction until it succeeds.
+  In the event that the OCC does not release the lock on an I2C bus this
+  results in an async token being held forever and the kernel thread that
+  started the transaction will block forever while waiting for an async
+  completion message. Fix this by limiting the number of attempts to
+  start the transaction.