arm: pmu: support pmu/perf on OMAP4 - booting problem on pandaboard
tom.leiming at gmail.com
Thu Apr 7 05:54:27 EDT 2011
Please check if the option CONFIG_PM is enabled or not.
If not, please try to enable it to see you issue can be fixed.
2011/4/7 Avik Sil <aviksil at linux.vnet.ibm.com>:
> Hi Ming,
> On Wednesday 06 April 2011 11:37 AM, Ming Lei wrote:
>> Hi Avik,
>> 2011/4/5 Avik Sil<aviksil at linux.vnet.ibm.com>:
>>> Even after using ioremapped addresses in omap_writel() I'm getting the
>>> Can you please point me to the location in mainline, where these l3
>>> are enabled?
>> I guess you can find here:
>> l3_main_3_ick&& l3_instr_ick:
>> 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.
More information about the linux-arm-kernel