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Commit 63ec4acb authored by Bavyasritha Alahari's avatar Bavyasritha Alahari
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ARM: dts: msm: Add cdsp rpmsg entry in Lahaina 

CDSPRM module relies on the rpmsg node to create a communication
channel with CDSP. The node also carries information for Cx i-peak
limit management, CPU QoS voting, HVX, CDSP thermal mitigation
frameworks.
CDSPRM module implements a RPMSG interface to communicate with CDSP
while providing a way for CDSP to vote for CPU L3 clock, CPU QoS to
benefit CDSP applications performance. The module also implements
an interface with NPU for Cx i-peak limit management and registers
cooling devices for CDSP and HVX thermal mitigation.
Documentation for device tree bindings related to CDSPRM.

Change-Id: I0f79ebcfcd2e6a2366f755278ae2c5f6bc1b8199
parent 121f0021

bindings/soc/qcom/cdsprm.txt

0 → 100644
+78 −0
Original line number Diff line number Diff line 
Qualcomm Technologies, Inc. CDSP Request Manager driver



CDSP Request Manager driver implements an rpmsg interface with

CDSP subsystem to serve L3 frequency and CPU QoS requests from CDSP.

It also interacts with NPU, Camera modules for Cx iPeak mitigations and

thermal module via CDSP/HVX cooling devices for thermal mitigation of

CDSP core.



Required properties:

- compatible: Must be "qcom,msm-cdsprm-rpmsg"

- qcom,glink-channels: Glink channel for communication with CDSP

- qcom,intents: A list of <number of intents, size of each intent>



- qcom,msm-cdsp-rm: A sub-device node to define CDSPM RM, Cx iPeak mitigation

		driver and CDSP core thermal cooling device

	Required properties:

	- compatible: Must be "qcom,msm-cdsp-rm"

	- qcom,qos-latency-us: pm_qos latency vote to be applied on CDSP request in

				micro seconds

	- qcom,qos-maxhold-ms: Maximum hold time for pm_qos latency vote from CDSP

				in milli seconds

	- qcom,compute-cx-limit-en: To enable CX ipeak limit management for compute

				subsystem

	- qcom,compute-priority-mode: when Cx iPeak mitigation is enabled,

				this field sets desired compute priority mode

				for AIX and HVX concurrency cases based on

				following values, where in HVX and NPU cores,

				if required, are throttled in concurrency based

				on the selected priority mode

				1 : HVX_MAX - Allows HVX to run at maximum possible

						frequency during concurrency with NPU

				2 : AIX_MAX - Allows NPU to run at maximum possible

						frequency during concurrency with HVX

				3 : HVX_OVER_AIX - Allows HVX to run at a higher

						frequency than NPU during concurrency

				4 : AIX_OVER_HVX - Allows NPU to run at a higher

						frequency than HVX during concurrency

	- #cooling-cells: Number of cooling cells for CDSP cooling device based on

			CDSP Q6 core clock throttling



- qcom,msm-hvx-rm: A sub-device node to define HVX based thermal cooling device

	Required properties:

	- compatible: Must be "qcom,msm-hvx-rm"

	- #cooling-cells: Number of cooling cells for CDSP cooling device based on

			HVX hardware throttling



- qcom,cdsp-l3: A sub-device node to define CDSP L3 target device for L3

		clock voting

	Required properties:

	- compatible: Must be "qcom,cdsp-l3"

	- qcom,target-dev: The DT device that corresponds to the CDSP L3

			devfreq-simple-dev



Example:

	qcom,msm_cdsprm_rpmsg {

		compatible = "qcom,msm-cdsprm-rpmsg";

		qcom,glink-channels = "cdsprmglink-apps-dsp";

		qcom,intents = <0x14 64>;



		qcom,cdsp-l3 {

			compatible = "qcom,cdsp-l3";

			qcom,target-dev = <&cdsp-cdsp-l3-lat>;

		};



		qcom,msm_cdsp_rm {

			compatible = "qcom,msm-cdsp-rm";

			qcom,qos-latency-us = <100>;

			qcom,qos-maxhold-ms = <20>;

			qcom,compute-cx-limit-en;

			qcom,compute-priority-mode = <2>;

			#cooling-cells = <2>;

		};



		 msm_hvx_rm: qcom,msm_hvx_rm {

			compatible = "qcom,msm-hvx-rm";

			#cooling-cells = <2>;

		};

	};

qcom/lahaina.dtsi

+12 −0
Original line number Diff line number Diff line
@@ -2660,6 +2660,18 @@ 
						0x2000 3

						0x4400 2>;

			};



			qcom,msm_cdsprm_rpmsg {

				compatible = "qcom,msm-cdsprm-rpmsg";

				qcom,glink-channels = "cdsprmglink-apps-dsp";

				qcom,intents = <0x20 12>;



				msm_cdsp_rm: qcom,msm_cdsp_rm {

					compatible = "qcom,msm-cdsp-rm";

					qcom,qos-latency-us = <60>;

					qcom,qos-maxhold-ms = <20>;

				};

			};

		};



		glink_spss: spss {