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[Bug 784176] Re: CPU_FREQ support is broken for OMAP 3 and OMAP 4

To: linaro-release@xxxxxxxxxxxxxxxxxxx
From: Ricardo Salveti <rsalveti@xxxxxxxxxxxx>
Date: Wed, 01 Jun 2011 16:29:00 -0000
Reply-to: Bug 784176 <784176@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: linux-linaro-omap (Ubuntu)
       Status: New => Confirmed

** Changed in: linux-ti-omap4 (Ubuntu)
       Status: New => Confirmed

** Changed in: linux-linaro
       Status: New => Confirmed

** Changed in: linux-linaro-omap (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/784176

Title:
  CPU_FREQ support is broken for OMAP 3 and OMAP 4

Status in Linaro Linux:
  Confirmed
Status in “linux-linaro-omap” package in Ubuntu:
  Confirmed
Status in “linux-ti-omap4” package in Ubuntu:
  Confirmed

Bug description:
  Current both Nicolas and Andy's kernel tree (2.6.38) is lacking proper
  support for CPU_FREQ. On OMAP 4 it tries to change the frequencies for
  the first CPU, and on OMAP 3 is basically freezes when calling
  cpufreq-info, besides not having a proper frequency scaling.

  The workaround now for the linux-linaro-omap kernel is to disable
  CPU_FREQ, so this bug is basically to track why it's currently
  disabled.