Re: [RFC] [PATCH 03/13] qcom: spm: Add Subsystem Power Manager driver for QCOM chipsets

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Hello Lina,

Sorry for spaming, Should have applied all of them.

On Friday 08 August 2014 02:48 PM, Pramod Gurav wrote:
> Hi Lina,
> 
> On Friday 08 August 2014 09:35 AM, Lina Iyer wrote:
>> Qualcomm chipsets use an separate h/w block to control the logic around
>> the processor cores (cpu and L2). The SPM h/w block regulates power to
>> the cores and controls the power when the core enter low power modes.
>>
>> Each core has its own instance of SPM. The SPM has the following key
>> functions
>> 	- Configure the h/w dependencies when entering low power modes
>> 	- Wait for interrupt and wake up on interrupt
>> 	- Ensure the dependencies are ready before bringing the core out
>> 	  of sleep
>> 	- Regulating voltage to the core, interfacing with the PMIC.
>> 	- Optimize power based on runtime recommendations.
>>
>> The driver identifies and configures the SPMs, by reading the nodes and
>> the register values from the devicetree. The SPMs need to be configured
>> to allow the processor to be idled in a low power state.
>  22 30 0f];
> 
> <snip>
> 
>> +	};
>> diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
>> index 70d52ed..3de7ed9 100644
>> --- a/drivers/soc/qcom/Makefile
>> +++ b/drivers/soc/qcom/Makefile
>> @@ -1,3 +1,5 @@
>>  obj-$(CONFIG_QCOM_GSBI)	+=	qcom_gsbi.o
>> +obj-$(CONFIG_QCOM_PM) +=	spm_devices.o spm.o
> 
> Are we missing a Kconfig entry for CONFIG_QCOM_PM? This won't compile.
>> +
>>  CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
>>  obj-$(CONFIG_QCOM_SCM) += scm.o scm-boot.o
> 
> <snip>
> 
>> +#endif  /* defined (CONFIG_QCOM_PM) */
>> +#endif  /* __MSM_SPM_H */
>>
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