[Gta04-owner] Same GTA04 - now 33% faster :-)

[Martin Jansa]

On Wed, Jul 25, 2012 at 11:24:59AM +0200, Dr. H. Nikolaus Schaller wrote:
> 
> Am 25.07.2012 um 09:45 schrieb Dr. H. Nikolaus Schaller:
> 
> > The 800 / 1000 MHz variants of the DM3730 are not decoded by U-Boot,
> > although there is one bit in some system control register (in the same
> > 128 bit block as the DIE_ID) which distinguishes between the 800 and
> > the 1 GHz specified chips. I think it is the "Speed Binned" register and/or the
> > "Control Device Status Register 15:0 (Address 0x4800 244C)" in
> > Table 1-6 of the TRM (SPRUGN4M).
> > 
> > I will take a look into the U-Boot/X-Loader code to fix that it is reported
> > correctly.
> 
> Ok,
> I have added such a detection [1]. It was completely missing and there
> was just a 600/720 MHz detection for the OMAP3530. Well, it is based
> on the Beagle Board code and there was no BB-XM with 800 MHz.
> 
> To check: install the new u-boot.bin [2] to SD (then you must press the AUX button
> for boot from SD) or to NAND flash.
> 
> All GTA04A3 boards should report 800 MHz and some of the GTA04A4
> boards or OpenPhoenux devices should report 1 GHz (serial number 0051 - 0080).

Nice, works for me with 3.4.6 :) will push that to default SHR kernel today

OMAP3630/3730-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz

SHR root at gjama ~ $ cpufreq-info 
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq at vger.kernel.org, please.
analyzing CPU 0:
  driver: omap
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 300 us.
  hardware limits: 300 MHz - 800 MHz
  available frequency steps: 300 MHz, 600 MHz, 800 MHz
  available cpufreq governors: conservative, ondemand, userspace,
powersave, performance
  current policy: frequency should be within 300 MHz and 800 MHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 300 MHz (asserted by call to hardware).
  cpufreq stats: 300 MHz:81.65%, 600 MHz:4.50%, 800 MHz:13.84%  (19)

Neil: I've noticed that last 2 patches weren't synced to github repo yet
OE @ ~/projects/linux-2.6 $ git log neilbrown/gta04/3.5.y..neilbrownSlower/3.5-gta04 --oneline
7452619 Enable 800MHz Operating Power Point.
582e326 Revert "arm: omap3: voltage: fix channel configuration"

Cheers,

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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