dt-bindings: add bindings for RIMPS memlat

%YAML 1.2

---

$id: http://devicetree.org/schemas/bindings/soc/qcom/qcom,rimps-log.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm Technologies, Inc. Rimps Logging

description: |

    RIMPS logging is a device that uses mailbox to collect the logs

    generated from rimps, and dump them into a dedicated log buffer

    through ipc_logging framework.

    An instance of rimps-log should have the mailbox controller phandle and

    addresses of log buffer set aside for this purpose.

properties:

  compatible:

    Usage: required

    Value type: <string>

    Definition: Must be "qcom,rimps-log"

example:

  - |

rimps_log: qcom,rimps_log@fd04780 {

		#address-cells = <2>;

		#size-cells = <2>;

		compatible = "qcom,rimps-log";

		reg = <0x0fd04580 0x200>,

				<0x0fd04780 0x200>;

		mboxes = <&rimps 1>;

	};

RIMPS memory latency

RIMPS memlat is a device that represents the use of the PMU in ARM cores

to measure the parameters for latency driven memory access patterns in rimps.

Required structure:

An instance of rimps-memlat must be described in two levels of device nodes.

The first level describes the controller while the second level describes the

monitors that the controller manages. At least one monitor is required per

controller.

[First Level Nodes]

Required properties:

- compatible:			Must be "qcom,rimps-memlat-cpugrp"

- qcom,cpulist:			List of CPU phandles to be monitored in a

				cluster. Must be a superset of cpulists

				described in second level nodes.

- reg-names:			pmu-base addresses need to store the pmu events

				during LPM and hotplug scenario.

[Second Level Nodes]

Required properties:

- compatible:			Must be "qcom,rimps-memlat-mon-l3"

- qcom,core-dev-table:		A mapping table of core frequency to a required

				bandwidth vote at the given core frequency.

				A phandle that contains this property may be

				provided instead (to share tables across nodes).

- qcom,cachemiss-ev:		The cache miss event that this monitor is

				supposed to measure. Optional for compute only.

- reg-names:				ftbl_base address required to populate

				L3 frequency and perf_base address required to know the current

				L3 frequency set.

Optional properties:

- qcom,cpulist:			List of CPU phandles to be monitored in a

				cluster. Must be a subset of the cpulist

				described in first level node. Defaults to

				cpulist in first level node if not specified.

- qcom,inst-ev:			The instruction count event that this monitor is

				supposed to measure. Defaults to 0x08 if not

				specified.

- qcom,stall-cycle-ev:		The stall cycle count that this monitor is

				supposed to measure. Assumes 100% stall if not

				specified.

Example:

	cpu0_grp: qcom,cpu0_grp {

		compatible = "qcom,rimps-memlat-cpugrp";

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

		#address-cells = <1>;

		#size-cells = <1>;

		ranges;

		reg = <0x0fd04900 0x1000>;

		reg-names = "pmu-base";

		cpu0_rimps_l3_latmon: qcom,cpu0-rimps-l3-latmon {

			#address-cells = <1>;

			#size-cells = <1>;

			ranges;

			compatible = "qcom,rimps-memlat-mon-l3";

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

			qcom,cachemiss-ev = <0x17>;

			reg = <0x18590100 0xa0>, <0x18590320 0x4>;

			reg-names = "ftbl-base", "perf-base";

			qcom,core-dev-table =

				<  300000  300000000 >,

				<  403200  403200000 >,

				<  499200  499200000 >,

				<  691200  614400000 >,

				<  806400  710400000 >,

				<  998400  806400000 >,

				< 1190400  998400000 >,

				< 1286400 1094400000 >,

				< 1459200 1248000000 >,

				< 1728000 1344000000 >,

				< 1804800 1440000000 >,

				< 1900800 1516800000 >;

		};

	};