arm: pmu: support pmu/perf on OMAP4 - booting problem on pandaboard
aviksil at linux.vnet.ibm.com
Mon Apr 4 10:14:41 EDT 2011
On Saturday 02 April 2011 10:57 AM, Ming Lei wrote:
> Hi Avik,
> 2011/4/1 Avik Sil<aviksil at linux.vnet.ibm.com>:
>> I've applied the patches in
>> on top of a linaro kernel which resulted in booting problem on Pandaboard.
>> It hangs inside the cti_unlock() while reading the LOCKSTATUS value, which
>> happens when omap_init_pmu() is called. Please help me debug the issue.
> Please check if l3 clocks are enabled to drive CTI, such as done in below:
> 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);
Can you please tell me where should I insert the above code to enable l3
clocks to drive CTI?
> No such issue on mainline since this clocks are enabled automatically.
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