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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/release-notes/skiboot-5.9.4.rst | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/release-notes/skiboot-5.9.4.rst b/doc/release-notes/skiboot-5.9.4.rst new file mode 100644 index 0000000..a222f21 --- /dev/null +++ b/doc/release-notes/skiboot-5.9.4.rst @@ -0,0 +1,26 @@ +.. _skiboot-5.9.4: + +============= +skiboot-5.9.4 +============= + +skiboot 5.9.4 was released on Wednesday November 29th, 2017. It replaces +:ref:`skiboot-5.9.3` as the current stable release in the 5.9.x series. + +Over :ref:`skiboot-5.9.3`, we have one NPU2/NVLink2 fix that works around +a potential glitch (the one :ref:`skiboot-5.9.3` would hard crash on rather +than let a system continue to run until it mysteriously crashed later on). + +That fix is in two parts: + +- npu2: hw-procedures: Change phy_rx_clock_sel values to recover from a + potential glitch. + +- npu2: hw-procedures: Manipulate IOVALID during training + + Ensure that the IOVALID bit for this brick is raised at the start of + link training, in the reset_ntl procedure. + + Then, to protect us from a glitch when the PHY clock turns off or gets + chopped, lower IOVALID for the duration of the phy_reset and + phy_rx_dccal procedures. |