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Commit ae657c09 authored by Ram Chandrasekar's avatar Ram Chandrasekar Committed by Manaf Meethalavalappu Pallikunhi
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dt-bindings: thermal: Add qmi cooling device bindings 



Add bindings for qmi cooling device driver. This driver will be used to
register cooling devices in remote subsystem to thermal framework.

Change-Id: I0526aef77ce710da585e5baf5c8745e840bc89c3
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent c231408f

Documentation/devicetree/bindings/thermal/qti-qmi-cdev.txt

0 → 100644
+113 −0
Original line number Diff line number Diff line 
QMI thermal mitigation(TMD) cooling devices.



The QMI TMD cooling device, will be used for various mitigations for remote

subsystem including remote processor mitigation, rail voltage restriction etc.

This cooling device uses kernel qti QMI interface to send the message to

remote subsystem.



Each child node of the QMI TMD devicetree node represents each remote

subsystem and each child of this subsystem represents separate cooling

devices. It requires minimum one remote subsystem node and each subsystem

node requires minimum one cooling device node.



Properties:



- compatible:

	Usage: required

	Value type: <string>

	Definition: should be "qcom,qmi-cooling-devices"





Subsystem properties:

- qcom,instance-id:

	Usage: required

	Value type: <integer>

	Definition: Remote subsystem QMI server instance id to be used for

			communicating with QMI.



	Minimum one child node is required. Child node name and its alias are

	used as cooling device name and phandle for that cooling device.



	cooling device node properties:

	-qcom,qmi-dev-name:

		Usage: required

		Value type: <string>

		Definition: Remote subsystem device identifier. Below strings

			are the only acceptable device names,

			"pa" -> for pa cooling device,

			"cpuv_restriction_cold" -> for vdd restriction,

			"cx_vdd_limit" -> for vdd limit,

			"modem" -> for processor passive cooling device,

			"modem_current" -> for current limiting device,

			"modem_bw" ->  for bus bandwidth limiting device,

			"cpr_cold" -> for cpr restriction.



	-#cooling-cells:

		Usage: required

		Value type: <integer>

		Definition: Must be 2. Needed for of_thermal as cooling device

			identifier. Please refer to

			<devicetree/bindings/thermal/thermal.txt> for more

			details.

Example:



	qmi-tmd-devices {

		compatible = "qcom,qmi-cooling-devices";



		modem {

			qcom,instance-id = <0x0>;



			modem_pa: modem_pa {

				qcom,qmi-dev-name = "pa";

				#cooling-cells = <2>;

			};



			modem_proc: modem_proc {

				qcom,qmi-dev-name = "modem";

				#cooling-cells = <2>;

			};



			modem_vdd: modem_vdd {

				qcom,qmi-dev-name = "cpuv_restriction_cold";

				#cooling-cells = <2>;

			};



			modem_current: modem_current {

				qcom,qmi-dev-name = "modem_current";

				#cooling-cells = <2>;

			};



			modem_cpr_cold: modem_cpr_cold {

				qcom,qmi-dev-name = "cpr_cold";

				#cooling-cells = <2>;

			};

		};



		adsp {

			qcom,instance-id = <0x1>;



			adsp_vdd: adsp_vdd {

				qcom,qmi-dev-name = "cpuv_restriction_cold";

				#cooling-cells = <2>;

			};

		};



		cdsp {

			qcom,instance-id = <0x43>;



			cdsp_vdd: cdsp_vdd {

				qcom,qmi-dev-name = "cpuv_restriction_cold";

				#cooling-cells = <2>;

			};

		};



		slpi {

			qcom,instance-id = <0x53>;



			slpi_vdd: slpi_vdd {

				qcom,qmi-dev-name = "cpuv_restriction_cold";

				#cooling-cells = <2>;

			};

		};

	};