[Bug 1941622] Update Released

[Brian Murray]

The verification of the Stable Release Update for u-boot has completed
successfully and the package is now being released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1941622

Title:
  [SRU] Bump unmatched CPU clock rate to 1.2 GHz

Status in u-boot package in Ubuntu:
  Fix Released
Status in u-boot source package in Focal:
  Fix Released

Bug description:
  [Impact]

  Bump SiFive Unmatched CPU clock rate from 1.0 GHz to 1.2 GHz as used
  by upstream U-Boot.

  This is the maximum frequency that according to SiFive is stable on
  all boards.

  [Test Plan]

   * System with these patches boots, operates normally without
  overheating. CPU clock speed is increased form 1.0 GHz to 1.2 GHz.

  [Where problems could occur]

   * Overheating, instability, panics. (Should not occur according to
  the board vendor)

  [Other Info]
   
   * wgrant & multiple SiFive forum users report even 1.5 GHz to be stable

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