Re: arm: pmu: support pmu/perf on OMAP4 - booting problem on pandaboard

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Hi Ming,

On Thursday 07 April 2011 03:24 PM, Ming Lei wrote:
Hi Avik,

Please check if the option CONFIG_PM is enabled or not.
CONFIG_PM is enabled in my config:

$ grep CONFIG_PM .config
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_SLEEP_SMP=y
CONFIG_PM_SLEEP=y
CONFIG_PM_RUNTIME=y
CONFIG_PM_OPS=y
CONFIG_PM_OPP=y
CONFIG_PMIC_DA903X=y
CONFIG_PMIC_ADP5520=y

As suggested in http://groups.google.com/group/pandaboard/browse_thread/thread/74abf5dafa2fd6e2/b1cc29b5060b4223?#b1cc29b5060b4223 , do you think prcm_setup_regs() has to be called for OMAP4?

Regards,
Avik


If not, please try to enable it to see you issue can be fixed.


2011/4/7 Avik Sil<aviksil@xxxxxxxxxxxxxxxxxx>:
Hi Ming,

On Wednesday 06 April 2011 11:37 AM, Ming Lei wrote:

Hi Avik,

2011/4/5 Avik Sil<aviksil@xxxxxxxxxxxxxxxxxx>:

Even after using ioremapped addresses in omap_writel() I'm getting the
oops.
Can you please point me to the location in mainline, where these l3
clocks
are enabled?

I guess you can find here:

          l3_main_3_ick&&    l3_instr_ick:
arch/arm/mach-omap2/clock44xx_data.c

the clocks are set as ENABLE_ON_INIT.

Those clocks are also set ENABLE_ON_INIT in the linaro kernel. But still
it's hanging at "val = __raw_readl(base + LOCKSTATUS);" in cti_unlock(),
even after explicitly enabling it using:

omap_writel(1, CM_L3INSTR_L3_3_CLKCTRL);
omap_writel(1, CM_L3INSTR_L3_INSTR_CLKCTRL);
omap_writel(2, CM_EMU_CLKSTCTRL);
while ((omap_readl(CM_EMU_CLKSTCTRL)&  0x300) != 0x300);

BTW, the oops were fixed by replacing omap_writel with __raw_writel.

Regards,
Avik


thanks,




thanks,

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