[Bug 1941622] Re: [SRU] Bump unmatched CPU clock rate to 1.2 GHz

Brian Murray 1941622 at bugs.launchpad.net
Tue Dec 7 16:39:17 UTC 2021


The additional information in comment #11 (the need to reboot and how to
check the speed of the device) should be added to the test plan in the
bug description so that the bug is easier for anyone to follow. I'll go
ahead and accept it anyway, but please update the bug description.

** Changed in: u-boot (Ubuntu Focal)
       Status: Incomplete => Fix Committed

** Tags added: verification-needed verification-needed-focal

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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 Committed

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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