Re: bisected regression: arm: omap3: voltage: fix channel configuration

[NeilBrown <neilb@suse.de>]

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On Tue, 24 Jul 2012 09:28:24 +0300 Tero Kristo <t-kristo@ti.com> wrote:

> On Tue, 2012-07-24 at 11:30 +1000, NeilBrown wrote:

> > Might there be some way to get it to scale higher than 600MHz?
> > The first message from U-boot says:
> > 
> > OMAP3630/3730-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
> > 
> > and the board manufacturer thinks it should be capable of 800MHz.
> 
> You need to enable 800MHz OPP similarly to what is done in 
> beagle_opp_init() in board-omap3beagle.c. I am not sure what your board
> is detected as, depends on your boot loader (check /proc/cpuinfo.)

Thanks!
Yes, my board identifies as cpu_is_omap3630() so that code looks relevant.
I copied the opp_init across to my board file, it runs without complaining
but it now gets to

[ ok ] Loading cpufreq kernel modules...done (none).
[....] CPUFreq Utilities: Setting ondemand CPUFreq governor...CPU0...


and hangs.  magic SYSRQ doesn't respond.

Any hints?

Thanks,
NeilBrown


#
# CPU Power Management
#

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_STAT_DETAILS=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y

#
# ARM CPU frequency scaling drivers
#
CONFIG_ARM_OMAP2PLUS_CPUFREQ=y
# CONFIG_ARM_EXYNOS4210_CPUFREQ is not set
# CONFIG_ARM_EXYNOS4X12_CPUFREQ is not set
# CONFIG_ARM_EXYNOS5250_CPUFREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

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