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Commit 0bae66c3 authored by Mahesh Sivasubramanian's avatar Mahesh Sivasubramanian
Browse files

msm: lpm-levels: Support for cluster power management 



Add power management support for multilevel cluster. The code is redesigned
to support low power modes with multiple hierarchies of clusters.

Change-Id: I0d0142e53bf2fe6152e7791f09bcb4d35a82e461
Signed-off-by: default avatarMahesh Sivasubramanian <msivasub@codeaurora.org>
parent 81406751

Documentation/devicetree/bindings/arm/msm/lpm-levels.txt

+254 −86
Original line number Diff line number Diff line 
* Low Power Management Levels



The application processor in MSM can do a variety of C-States for low power

management. The LPM module performs the CPU and System low power modes based

on it latency and residency information of the individual CPU/System low power

levels.

management. The LPM module performs the System low power modes based on

the latency/residency information of the individual CPUs and clusters.



The first level node represents the properties of the system and includes

second level node to represent the low power modes of cpu and system.

LPM-levels defines a hierarchy of low power modes that a cluster and

clusters/cpus within that cluster can enter. The bottom hierarchy level

represents the low power modes that a CPU can enter. The CPU low power nodes

are associated with a cluster that defines the low power modes that a cluster

can enter. For system involving a hierarchy of clusters, the cluster low power

modes can be contained within another cluster.



[First Level Nodes]

[Top Level Node]

Required properties:



- compatible: "qcom,lpm-levels"



The optional nodes for the First level nodes are:

- qcom,no-l2-saw: Indicates if this target has an L2 SAW (SPM and AVS wrapper).

- qcom,default-l2-state: Indicates what the default low power state of the L2

		SAW should be. This property should be mentioned when there is

		a L2 saw.

- qcom,allow-synced-levels:  Indicates if certain low power modes should be

		synchronized across all cores so as to configure a system

		low power mode.



[Second Level Nodes]

Required properties to define CPU low power modes :

- compatible = "qcom,cpu-modes";

- qcom,mode: The sleep mode of the processor, values for the property are:

[Node bindings for qcom,pm-cluster]

 Required properties:

	- reg - The numeric cluster id

	- label: Identifies the cluster name. The name will be

	used when reporting the stats for each low power mode.

	- qcom,spm-device-names: List of  SPM device names which control the

	low power modes for this driver. The lpm driver uses the device name

	to obtain a handle to the SPM driver that controls the cluster's low

	power mode.

	- qcom,default-level: The default low power level that a cluster is

	programmed. The SPM of the corresponding device is configured at this

	low power mode by default.

	- qcom,cpu: List of CPU phandles to identify the CPUs associated with

	this cluster. This property is required if and only if the cluster

	node contains a qcom,pm-cpu node.



	qcom,pm-cluster contains qcom,pm-cluster-level nodes which identify

	the various low power modes that the cluster can enter. The

	qcom,pm-cluster node should also include another cluster node or a cpu

	node that defines their respective low power modes.



[Node bindings for qcom,pm-cluster-level]

 Required properties:

	- reg: The numeric cluster level id

	- label: Name to identify the low power mode in stats

	module.

	- qcom,spm-<device-name>-mode: For each SPM device defined in

	qcom,spm-devices-names, a corresponding entry identifying the low

	power mode is expected. For example, the qcom,pm-cluster node contains

	a SPM device by name "l2" then the cluster level should contain a

	qcom,spm-l2-mode.  When a cluster level is chosen ,the SPM device is

	programmed with its

	corresponding low power mode. The accepted values for this property

	are:

		- "active"

		- "retention"

		- "gdhs"

		- "pc"

	- qcom,min-child-idx: The minimum level that a child CPU should be in

	before this level can be chosen.

	- qcom,latency-us: The latency in handling the interrupt if this level

	was chosen, in uSec

	- qcom,ss-power: The steady state power expelled when the processor is

	in this level in mWatts

	- qcom,energy-overhead: The energy used up in entering and exiting

	this level in mWatts.uSec

	- qcom,time-overhead: The time spent in entering and exiting this

	level in uS

 Optional properties:

	- qcom,notify-rpm: When set, the driver flushes the RPM sleep set and

	configures the virtual MPM driver in prepration for a RPM assisted

	sleep.

	- qcom,last-level - When set, the cluster level is applied only when

	there is 1 online core.



[Node bindings for qcom,pm-cpu]

qcom,pm-cpu contains the low power modes that a cpu could enter. Currently it

doesn't have any required properties and is a container for

qcom,pm-cpu-levels.



[Node bindings for qcom,pm-cpu-levels]

 Required properties:

	- reg: The numeric cpu level id

	- qcom,spm-cpu-mode: The sleep mode of the processor, values for the

	property are:

		"wfi" - Wait for Interrupt

		"retention" - Retention

		"standalone_pc" - Standalone power collapse

		"pc" - Power Collapse

- qcom,latency-us: The latency in handling the interrupt if this level was

		chosen, in uSec

- qcom,ss-power: The steady state power expelled when the processor is in this

		 level in mWatts

- qcom,energy-overhead: The energy used up in entering and exiting this level

		 in mWatts.uSec

- qcom,time-overhead: The time spent in entering and exiting this level in uS

- qcom,use-broadcast-timer: Indicates that the timer gets reset during power

		collapse and the cpu relies on Broadcast timer for scheduled

		wakeups.



Required propertieis to define System low power mode :

- compatible: "qcom,system-modes"

- qcom,l2: The state of L2 cache. Values are:

		"l2_cache_pc" - L2 cache in power collapse

		"l2_cache_pc_no_rpm" - L2 cache in power collapse. This mode

				wouldn't inform the RPM

		"l2_cache_retenetion" - L2 cache in retention

		"l2_cache_gdhs" - L2 cache in GDHS

		"l2_cache_active" - L2 cache in active mode



- qcom,latency-us: The latency in handling the interrupt if this level was

		chosen, in uSec

- qcom,ss-power: The steady state power expelled when the processor is in this

		level in mWatts

- qcom,energy-overhead: The energy used up in entering and exiting this level

		in mWatts.uSec

- qcom,time-overhead: The time spent in entering and exiting this level in uS

- qcom,min-cpu-mode: The min cpu sleep mode at which the given system level is

		valid. All cpus should have entered this low power mode before

		this system level can be chosen.

- qcom,sync-mode: The entry into this system mode should be synchronized across

		between all online CPUs.

- qcom,send-rpm-sleep-set: The system mode notifies RPM of Apps sleep and should

		send the current sleep set votes and configure MPM before

		entering this low power mode.



Example:

	- qcom,latency-us: The latency in handling the interrupt if this level

	was chosen, in uSec

	- qcom,ss-power: The steady state power expelled when the processor is

	in this level in mWatts

	- qcom,energy-overhead: The energy used up in entering and exiting

	this level in mWatts.uSec

	- qcom,time-overhead: The time spent in entering and exiting this

	level in uS

	- qcom,use-broadcast-timer: Indicates that the timer gets reset during

	power collapse and the cpu relies on Broadcast timer for scheduled

	wakeups. Required only for states where the CPUs internal timer state

	is lost.



[Example dts]



qcom,lpm-levels {

	#address-cells = <1>;

	#size-cells = <0>;

	compatible = "qcom,lpm-levels";

		qcom,default-l2-state = "l2_cache_retention";



	qcom,pm-cluster@0 {

		#address-cells = <1>;

		#size-cells = <0>;

		reg = <0>;

		label = "system";

		qcom,spm-device-names = "cci";

		qcom,default-level = <0>;



		qcom,pm-cluster-level@0{

			reg = <0>;

			label = "system-cci-retention";

			qcom,spm-cci-mode = "retention";

			qcom,latency-us = <100>;

			qcom,ss-power = <1000>;

			qcom,energy-overhead = <300000>;

			qcom,time-overhead = <100>;

		};



		qcom,pm-cluster-level@2{

			reg = <1>;

			label = "system-cci-pc";

			qcom,spm-cci-mode = "pc";

			qcom,latency-us = <30000>;

			qcom,ss-power = <83>;

			qcom,energy-overhead = <2274420>;

			qcom,time-overhead = <6605>;

			qcom,min-child-idx = <1>;

			qcom,notify-rpm;

		};



		qcom,pm-cluster@0{

			#address-cells = <1>;

		#size-cells = <1>;

			#size-cells = <0>;

			reg = <0>;

			label = "a53";

			qcom,spm-device-names = "l2";

			qcom,default-level=<0>;

			qcom,cpu = <&CPU0 &CPU1 &CPU2 &CPU3>;



			qcom,pm-cluster-level@0{

				reg = <0>;

				label = "a53-l2-retention";

				qcom,spm-l2-mode = "retention";

				qcom,latency-us = <100>;

				qcom,ss-power = <1000>;

				qcom,energy-overhead = <300000>;

				qcom,time-overhead = <100>;

			};



		qcom,cpu-modes {

			compatible = "qcom,cpu-modes";

			qcom,cpu-mode@0 {

				qcom,mode = "wfi";

			qcom,pm-cluster-level@1{

				reg = <1>;

				label = "a53-l2-pc";

				qcom,spm-l2-mode = "pc";

				qcom,latency-us = <30000>;

				qcom,ss-power = <83>;

				qcom,energy-overhead = <2274420>;

				qcom,time-overhead = <6605>;

				qcom,min-child-idx = <3>;

			};



			qcom,pm-cpu {

				#address-cells = <1>;

				#size-cells = <0>;

				qcom,pm-cpu-level@0 {

					reg = <0>;

					qcom,spm-cpu-mode = "wfi";

					qcom,latency-us = <1>;

					qcom,ss-power = <715>;

					qcom,energy-overhead = <17700>;

					qcom,time-overhead = <2>;

				};



			qcom,cpu-mode@1 {

				qcom,mode = "retention";

				qcom,pm-cpu-level@1 {

					reg = <1>;

					qcom,spm-cpu-mode = "retention";

					qcom,latency-us = <35>;

					qcom,ss-power = <542>;

					qcom,energy-overhead = <34920>;

					qcom,time-overhead = <40>;

				};



				qcom,pm-cpu-level@2 {

					reg = <2>;

					qcom,spm-cpu-mode = "standalone_pc";

					qcom,latency-us = <300>;

					qcom,ss-power = <476>;

					qcom,energy-overhead = <225300>;

					qcom,time-overhead = <350>;

				};

		qcom,system-modes {

			compatible = "qcom,system-modes";



			qcom,system-mode@0 {

				qcom,l2 = "l2_cache_gdhs";

				qcom,latency-us = <20000>;

				qcom,pm-cpu-level@3 {

					reg = <3>;

					qcom,spm-cpu-mode = "pc";

					qcom,latency-us = <500>;

					qcom,ss-power = <163>;

				qcom,energy-overhead = <1577736>;

				qcom,time-overhead = <5067>;

					qcom,energy-overhead = <577736>;

					qcom,time-overhead = <1000>;

				};

			};

		};



		qcom,pm-cluster@1{

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <1>;

			label = "a57";

			qcom,spm-device-names = "l2";

			qcom,default-level=<0>;

			qcom,cpu = <&CPU4 &CPU5 &CPU6 &CPU7>;



			qcom,pm-cluster-level@0{

				reg = <0>;

				label = "a57-l2-retention";

				qcom,spm-l2-mode = "retention";

				qcom,latency-us = <100>;

				qcom,ss-power = <1000>;

				qcom,energy-overhead = <300000>;

				qcom,time-overhead = <100>;

			};



			qcom,system-mode@1 {

				qcom,l2 = "l2_cache_pc";

			qcom,pm-cluster-level@2{

				reg = <1>;

				label = "a57-l2-pc";

				qcom,spm-l2-mode = "pc";

				qcom,latency-us = <30000>;

				qcom,ss-power = <83>;

				qcom,energy-overhead = <2274420>;

				qcom,time-overhead = <6605>;

				qcom,min-child-idx = <3>;

			};



			qcom,pm-cpu {

				#address-cells = <1>;

				#size-cells = <0>;

				qcom,pm-cpu-level@0 {

					reg = <0>;

					qcom,spm-cpu-mode = "wfi";

					qcom,latency-us = <1>;

					qcom,ss-power = <715>;

					qcom,energy-overhead = <17700>;

					qcom,time-overhead = <2>;

				};



				qcom,pm-cpu-level@1 {

					reg = <1>;

					qcom,spm-cpu-mode = "retention";

					qcom,latency-us = <35>;

					qcom,ss-power = <542>;

					qcom,energy-overhead = <34920>;

					qcom,time-overhead = <40>;

				};



				qcom,pm-cpu-level@2 {

					reg = <2>;

					qcom,spm-cpu-mode = "standalone_pc";

					qcom,latency-us = <300>;

					qcom,ss-power = <476>;

					qcom,energy-overhead = <225300>;

					qcom,time-overhead = <350>;

				};



				qcom,pm-cpu-level@3 {

					reg = <3>;

					qcom,spm-cpu-mode = "pc";

					qcom,latency-us = <500>;

					qcom,ss-power = <163>;

					qcom,energy-overhead = <577736>;

					qcom,time-overhead = <1000>;

				};

			};

		};

	};





};

arch/arm/boot/dts/qcom/apq8084-pm.dtsi

+70 −50
Original line number Diff line number Diff line
@@ -112,7 +112,7 @@ 
		#address-cells = <1>;

		#size-cells = <1>;

		reg = <0xf9012000 0x1000>;

		qcom,name = "l2";

		qcom,name = "system-l2";

		qcom,core-id = <0xffff>; /* L2/APCS SAW */

		qcom,saw2-ver-reg = <0xfd0>;

		qcom,saw2-cfg = <0x14>;
@@ -137,70 +137,90 @@ 


	qcom,lpm-levels {

		compatible = "qcom,lpm-levels";

		qcom,default-l2-state = "l2_cache_retention";

		qcom,allow-synced-levels;

		#address-cells = <1>;

		#size-cells = <1>;

		#size-cells = <0>;



		qcom,pm-cluster@0{

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <0>;

			label = "system";

			qcom,spm-device-names = "l2";

			qcom,default-level=<0>;



			qcom,pm-cluster-level@0{

				reg = <0>;

				label = "l2-retention";

				qcom,spm-l2-mode = "retention";

				qcom,latency-us = <100>;

				qcom,ss-power = <1000>;

				qcom,energy-overhead = <300000>;

				qcom,time-overhead = <100>;

				qcom,min-child-idx = <2>;

			};



			qcom,pm-cluster-level@1{

				reg = <1>;

				label = "l2-gdhs";

				qcom,spm-l2-mode = "gdhs";

				qcom,latency-us = <500>;

				qcom,ss-power = <163>;

				qcom,energy-overhead = <577736>;

				qcom,time-overhead = <1000>;

				qcom,min-child-idx = <2>;

			};



			qcom,pm-cluster-level@2{

				reg = <2>;

				label = "l2-pc";

				qcom,spm-l2-mode = "pc";

				qcom,latency-us = <30000>;

				qcom,ss-power = <83>;

				qcom,energy-overhead = <2274420>;

				qcom,time-overhead = <6605>;

				qcom,min-child-idx = <3>;

				qcom,notify-rpm;

			};



		qcom,cpu-modes {

			compatible = "qcom,cpu-modes";

			qcom,pm-cpu {

				#address-cells = <1>;

				#size-cells = <0>;



			qcom,cpu-mode@0 {

				qcom,mode = "wfi";

				qcom,pm-cpu-level@0 {

					reg = <0>;

					qcom,spm-cpu-mode = "wfi";

					qcom,latency-us = <1>;

					qcom,ss-power = <715>;

					qcom,energy-overhead = <17700>;

					qcom,time-overhead = <2>;

				};



			qcom,cpu-mode@1 {

				qcom,mode = "retention";

				qcom,pm-cpu-level@1 {

					reg = <1>;

					qcom,spm-cpu-mode = "retention";

					qcom,latency-us = <35>;

					qcom,ss-power = <542>;

					qcom,energy-overhead = <34920>;

					qcom,time-overhead = <40>;

				};



			qcom,cpu-mode@2 {

				qcom,mode = "standalone_pc";

				qcom,pm-cpu-level@2 {

					reg = <2>;

					qcom,spm-cpu-mode = "standalone_pc";

					qcom,latency-us = <300>;

					qcom,ss-power = <476>;

					qcom,energy-overhead = <225300>;

					qcom,time-overhead = <350>;

				};



			qcom,cpu-mode@3 {

				qcom,mode = "pc";

				qcom,latency-us = <500>;

				qcom,ss-power = <400>;

				qcom,energy-overhead = <280000>;

				qcom,time-overhead = <500>;

				qcom,use-broadcast-timer;

			};



		};

		qcom,system-modes {

			compatible = "qcom,system-modes";



			qcom,system-mode@0 {

				qcom,l2 = "l2_cache_gdhs";

				qcom,pm-cpu-level@3 {

					reg = <3>;

					qcom,spm-cpu-mode = "pc";

					qcom,latency-us = <500>;

					qcom,ss-power = <163>;

					qcom,energy-overhead = <577736>;

					qcom,time-overhead = <1000>;

				qcom,min-cpu-mode= "standalone_pc";

				qcom,sync-mode;

				};



			qcom,system-mode@1 {

				qcom,l2 = "l2_cache_pc";

				qcom,latency-us = <30000>;

				qcom,ss-power = <83>;

				qcom,energy-overhead = <2274420>;

				qcom,time-overhead = <6605>;

				qcom,min-cpu-mode = "pc";

				qcom,send-rpm-sleep-set;

				qcom,sync-mode;

			};

		};

	};

arch/arm/boot/dts/qcom/mdm9630-pm.dtsi

+50 −32
Original line number Diff line number Diff line
@@ -29,58 +29,76 @@ 


	qcom,lpm-levels {

		compatible = "qcom,lpm-levels";

		qcom,no-l2-saw;

		#address-cells = <1>;

		#size-cells = <0>;



		qcom,cpu-modes {

			compatible = "qcom,cpu-modes";

			qcom,cpu-mode@0 {

				qcom,mode = "wfi";

		qcom,pm-cluster@0{

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <0>;

			label = "system";

			qcom,default-level = <0>;



			qcom,pm-cluster-level@0 {

				reg = <0>;

				label = "l2-active";

				qcom,latency-us = <100>;

				qcom,ss-power = <8000>;

				qcom,energy-overhead = <100000>;

				qcom,time-overhead = <1>;

				qcom,energy-overhead = <60100000>;

				qcom,time-overhead = <3000>;

			};



			qcom,cpu-mode@1 {

				qcom,mode = "standalone_pc";

			qcom,pm-cluster-level@1 {

				reg = <1>;

				label = "l2-flush-no-rpm";

				qcom,latency-us = <2000>;

				qcom,ss-power = <5000>;

				qcom,energy-overhead = <60100000>;

				qcom,time-overhead = <3000>;

				qcom,min-child-idx = <1>;

			};



			qcom,cpu-mode@2 {

				qcom,mode = "pc";

			qcom,pm-cluster-level@2 {

				reg = <2>;

				label = "l2-pc";

				qcom,latency-us = <30000>;

				qcom,ss-power = <5000>;

				qcom,energy-overhead = <60350000>;

				qcom,time-overhead = <7300>;

				qcom,min-child-idx = <2>;

				qcom,notify-rpm;

			};



			qcom,pm-cpu {

				#address-cells = <1>;

				#size-cells = <0>;



				qcom,pm-cpu-level@0 {

					reg = <0>;

					qcom,spm-cpu-mode = "wfi";

					qcom,latency-us = <100>;

					qcom,ss-power = <8000>;

					qcom,energy-overhead = <100000>;

					qcom,time-overhead = <1>;

				};

		qcom,system-modes {

			compatible = "qcom,system-modes";



			qcom,system-mode@0 {

				qcom,l2 = "l2_cache_pc";

				qcom,pm-cpu-level@1 {

					reg = <1>;

					qcom,spm-cpu-mode = "standalone_pc";

					qcom,latency-us = <2000>;

					qcom,ss-power = <5000>;

					qcom,energy-overhead = <60100000>;

					qcom,time-overhead = <3000>;

				qcom,min-cpu-mode= "standalone_pc";

				qcom,sync-mode;

				};



			qcom,system-mode@1 {

				qcom,l2 = "l2_cache_pc";

				qcom,pm-cpu-level@2 {

					reg = <2>;

					qcom,spm-cpu-mode = "pc";

					qcom,latency-us = <30000>;

					qcom,ss-power = <5000>;

					qcom,energy-overhead = <60350000>;

					qcom,time-overhead = <7300>;

				qcom,min-cpu-mode= "pc";

				qcom,send-rpm-sleep-set;

				qcom,sync-mode;

				};

			};

		};

	};

arch/arm/boot/dts/qcom/msm8226-v1-pm.dtsi

+63 −44
Original line number Diff line number Diff line
@@ -88,7 +88,7 @@ 
		#address-cells = <1>;

		#size-cells = <1>;

		reg = <0xf9012000 0x1000>;

		qcom,name = "l2";

		qcom,name = "system-l2";

		qcom,core-id = <0xffff>; /* L2/APCS SAW */

		qcom,saw2-ver-reg = <0xfd0>;

		qcom,saw2-cfg = <0x14>;
@@ -104,31 +104,73 @@ 
		qcom,saw2-spm-cmd-pc = [00 32 b0 10 e0 d0 6b c0 42 f0

				11 07 01 b0 50 4e 02 02 c0 d0 12 e0 6b 02 32

				50 f0 0f]; /*APCS_PMIC_OFF_L2RAM_OFF*/

		qcom,saw2-spm-cmd-pc-no-rpm = [00 32 b0 10 e0 d0 6b c0 42 f0

				11 03 01 b0 50 4e 02 02 c0 d0 12 e0 6b 02 32

				50 f0 0f]; /*APCS_PMIC_OFF_L2RAM_OFF*/

		qcom,L2-spm-is-apcs-master;

	};



	qcom,lpm-levels {

		compatible = "qcom,lpm-levels";

		qcom,default-l2-state = "l2_cache_active";

		#address-cells = <1>;

		#size-cells = <0>;



		qcom,cpu-modes {

			compatible = "qcom,cpu-modes";

		qcom,pm-cluster@0 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <0>;

			label = "system";

			qcom,spm-device-names = "l2";

			qcom,default-level = <0>;



			qcom,pm-cluster-level@0 {

				reg = <0>;

				label = "l2-cache-active";

				qcom,spm-l2-mode = "active";

				qcom,latency-us = <10>;

				qcom,ss-power = <3000>;

				qcom,energy-overhead = <60000>;

				qcom,time-overhead = <110>;

			};



			qcom,pm-cluster-level@1 {

				reg = <1>;

				label = "l2-cache-pc-no-rpm";

				qcom,spm-l2-mode = "pc";

				qcom,latency-us = <1000>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-child-idx = <2>;

				qcom,last-core-only;

			};



			qcom,pm-cluster-level@2 {

				reg = <2>;

				label = "l2-cache-pc";

				qcom,spm-l2-mode = "pc";

				qcom,latency-us = <12700>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-child-idx = <2>;

				qcom,notify-rpm;

				qcom,last-core-only;

			};



			qcom,cpu-mode@0 {

				qcom,mode = "wfi";

			qcom,pm-cpu {

				#address-cells = <1>;

				#size-cells = <0>;



				qcom,pm-cpu-level@0{

					reg = <0>;

					qcom,spm-cpu-mode = "wfi";

					qcom,latency-us = <1>;

					qcom,ss-power = <530>;

					qcom,energy-overhead = <52800>;

					qcom,time-overhead = <100>;

				};



			qcom,cpu-mode@1 {

				qcom,mode = "standalone_pc";

				qcom,pm-cpu-level@1 {

					reg = <1>;

					qcom,spm-cpu-mode = "standalone_pc";

					qcom,latency-us = <500>;

					qcom,ss-power = <410>;

					qcom,energy-overhead = <603400>;
@@ -136,8 +178,9 @@ 
					qcom,use-broadcast-timer;

				};



			qcom,cpu-mode@2 {

				qcom,mode = "pc";

				qcom,pm-cpu-level@2 {

					reg = <2>;

					qcom,spm-cpu-mode = "pc";

					qcom,latency-us = <550>;

					qcom,ss-power = <372>;

					qcom,energy-overhead = <700000>;
@@ -145,30 +188,6 @@ 
					qcom,use-broadcast-timer;

				};

			};



		qcom,system-modes {

			compatible = "qcom,system-modes";



			qcom,system-mode@0 {

				qcom,l2 = "l2_cache_pc_no_rpm";

				qcom,latency-us = <1000>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-cpu-mode= "standalone_pc";

				qcom,sync-mode;

			};



			qcom,system-mode@1 {

				qcom,l2 = "l2_cache_pc";

				qcom,latency-us = <12700>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-cpu-mode= "pc";

				qcom,send-rpm-sleep-set;

				qcom,sync-mode;

			};

		};

	};

arch/arm/boot/dts/qcom/msm8226-v2-pm.dtsi

+70 −49
Original line number Diff line number Diff line
@@ -88,7 +88,7 @@ 
		#address-cells = <1>;

		#size-cells = <1>;

		reg = <0xf9012000 0x1000>;

		qcom,name = "l2";

		qcom,name = "system-l2";

		qcom,core-id = <0xffff>; /* L2/APCS SAW */

		qcom,saw2-ver-reg = <0xfd0>;

		qcom,saw2-cfg = <0x14>;
@@ -103,9 +103,6 @@ 
		qcom,saw2-spm-cmd-ret = [00 03 00 0f];

		qcom,saw2-spm-cmd-gdhs = [00 20 32 6b c0 e0 d0 42 03 50

				4e 02 02 d0 e0 c0 22 6b 02 32 50 0f];

		qcom,saw2-spm-cmd-pc-no-rpm = [00 32 b0 10 e0 d0 6b c0 42 f0

				11 03 01 b0 50 4e 02 02 c0 d0 12 e0 6b 02 32

				50 f0 0f]; /*APCS_PMIC_OFF_L2RAM_OFF*/

		qcom,saw2-spm-cmd-pc = [00 32 b0 10 e0 d0 6b c0 42 f0

				11 07 01 b0 50 4e 02 02 c0 d0 12 e0 6b 02 32

				50 f0 0f]; /*APCS_PMIC_OFF_L2RAM_OFF*/
@@ -114,23 +111,80 @@ 


	qcom,lpm-levels {

		compatible = "qcom,lpm-levels";

		qcom,default-l2-state = "l2_cache_active";

		#address-cells = <1>;

		#size-cells = <0>;



		qcom,cpu-modes {

			compatible = "qcom,cpu-modes";

		qcom,pm-cluster@0 {

			reg = <0>;

			#address-cells = <1>;

			#size-cells = <0>;

			label = "system";

			qcom,spm-device-names = "l2";

			qcom,default-level = <0>;



			qcom,pm-cluster-level@0 {

				reg = <0>;

				label = "l2-cache-active";

				qcom,spm-l2-mode = "active";

				qcom,latency-us = <10>;

				qcom,ss-power = <3000>;

				qcom,energy-overhead = <60000>;

				qcom,time-overhead = <110>;

			};



			qcom,pm-cluster-level@1 {

				reg = <1>;

				label = "l2-cache-gdhs";

				qcom,spm-l2-mode = "gdhs";

				qcom,latency-us = <700>;

				qcom,ss-power = <372>;

				qcom,energy-overhead = <738750>;

				qcom,time-overhead = <1410>;

				qcom,min-child-idx = <2>;

				qcom,last-core-only;

			};



			qcom,pm-cluster-level@2 {

				reg = <2>;

				label = "l2-cache-pc-no-rpm";

				qcom,spm-l2-mode = "pc";

				qcom,latency-us = <1000>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-child-idx = <2>;

				qcom,last-core-only;

			};



			qcom,pm-cluster-level@3 {

				reg = <3>;

				label = "l2-cache-pc";

				qcom,spm-l2-mode = "pc";

				qcom,latency-us = <12700>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-child-idx = <2>;

				qcom,notify-rpm;

				qcom,last-core-only;

			};



			qcom,cpu-mode@0 {

				qcom,mode = "wfi";

			qcom,pm-cpu {

				#address-cells = <1>;

				#size-cells = <0>;



				qcom,pm-cpu-level@0{

					reg = <0>;

					qcom,spm-cpu-mode = "wfi";

					qcom,latency-us = <1>;

					qcom,ss-power = <530>;

					qcom,energy-overhead = <52800>;

					qcom,time-overhead = <100>;

				};



			qcom,cpu-mode@1 {

				qcom,mode = "standalone_pc";

				qcom,pm-cpu-level@1 {

					reg = <1>;

					qcom,spm-cpu-mode = "standalone_pc";

					qcom,latency-us = <500>;

					qcom,ss-power = <410>;

					qcom,energy-overhead = <603400>;
@@ -138,8 +192,9 @@ 
					qcom,use-broadcast-timer;

				};



			qcom,cpu-mode@2 {

				qcom,mode = "pc";

				qcom,pm-cpu-level@2 {

					reg = <2>;

					qcom,spm-cpu-mode = "pc";

					qcom,latency-us = <550>;

					qcom,ss-power = <372>;

					qcom,energy-overhead = <700000>;
@@ -147,40 +202,6 @@ 
					qcom,use-broadcast-timer;

				};

			};



		qcom,system-modes {

			compatible = "qcom,system-modes";



			qcom,system-mode@0 {

				qcom,l2 = "l2_cache_gdhs";

				qcom,latency-us = <700>;

				qcom,ss-power = <372>;

				qcom,energy-overhead = <738750>;

				qcom,time-overhead = <1410>;

				qcom,min-cpu-mode= "standalone_pc";

				qcom,sync-mode;

			};



			qcom,system-mode@1 {

				qcom,l2 = "l2_cache_pc_no_rpm";

				qcom,latency-us = <1000>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-cpu-mode= "standalone_pc";

				qcom,sync-mode;

			};



			qcom,system-mode@2 {

				qcom,l2 = "l2_cache_pc";

				qcom,latency-us = <12700>;

				qcom,ss-power = <315>;

				qcom,energy-overhead = <1027150>;

				qcom,time-overhead = <2400>;

				qcom,min-cpu-mode= "pc";

				qcom,send-rpm-sleep-set;

				qcom,sync-mode;

			};

		};

	};
@@ -314,8 +335,8 @@ 
	qcom,pm@fe805664 {

		compatible = "qcom,pm";

		reg = <0xfe805664 0x40>;

		qcom,pc-mode = "tz_l2_int";

		qcom,use-sync-timer;

		qcom,pc-resets-timer;

		qcom,synced-clocks;

	};