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Current name of coresight component's folder consists of prefix of the device and the id in the device list. When run 'ls' command, we can get the register address of the device. Take CTI for example, if we want to set the config for modem CTI, but we can't know which CTI is modem CTI from all current information. cti_sys0 -> ../../../devices/platform/soc@0/138f0000.cti/cti_sys0 cti_sys1 -> ../../../devices/platform/soc@0/13900000.cti/cti_sys1 Add label to show hardware context information of each coresight device. There will be a sysfs node label in each device folder. cat /sys/bus/coresight/devices/cti_sys0/label Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250816072529.3716968-2-quic_jinlmao@quicinc.com
151 lines
4.0 KiB
YAML
151 lines
4.0 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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# Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/arm/qcom,coresight-tpdm.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Trace, Profiling and Diagnostics Monitor - TPDM
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description: |
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The TPDM or Monitor serves as data collection component for various dataset
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types specified in the QPMDA spec. It covers Implementation defined ((ImplDef),
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Basic Counts (BC), Tenure Counts (TC), Continuous Multi-Bit (CMB), and Discrete
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Single Bit (DSB). It performs data collection in the data producing clock
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domain and transfers it to the data collection time domain, generally ATB
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clock domain.
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The primary use case of the TPDM is to collect data from different data
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sources and send it to a TPDA for packetization, timestamping, and funneling.
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maintainers:
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- Mao Jinlong <quic_jinlmao@quicinc.com>
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- Tao Zhang <quic_taozha@quicinc.com>
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# Need a custom select here or 'arm,primecell' will match on lots of nodes
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select:
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properties:
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compatible:
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contains:
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enum:
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- qcom,coresight-tpdm
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required:
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- compatible
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properties:
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$nodename:
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pattern: "^tpdm(@[0-9a-f]+)$"
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compatible:
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items:
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- const: qcom,coresight-tpdm
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- const: arm,primecell
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reg:
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maxItems: 1
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qcom,dsb-element-bits:
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description:
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Specifies the DSB(Discrete Single Bit) element size supported by
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the monitor. The associated aggregator will read this size before it
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is enabled. DSB element size currently only supports 32-bit and 64-bit.
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enum: [32, 64]
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qcom,cmb-element-bits:
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description:
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Specifies the CMB(Continuous Multi-Bit) element size supported by
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the monitor. The associated aggregator will read this size before it
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is enabled. CMB element size currently only supports 8-bit, 32-bit
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and 64-bit.
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enum: [8, 32, 64]
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qcom,dsb-msrs-num:
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description:
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Specifies the number of DSB(Discrete Single Bit) MSR(mux select register)
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registers supported by the monitor. If this property is not configured
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or set to 0, it means this DSB TPDM doesn't support MSR.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 32
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qcom,cmb-msrs-num:
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description:
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Specifies the number of CMB MSR(mux select register) registers supported
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by the monitor. If this property is not configured or set to 0, it means
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this TPDM doesn't support CMB MSR.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 32
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label:
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description:
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Description of a coresight device.
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clocks:
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maxItems: 1
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clock-names:
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items:
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- const: apb_pclk
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out-ports:
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description: |
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Output connections from the TPDM to coresight funnel/TPDA.
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$ref: /schemas/graph.yaml#/properties/ports
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properties:
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port:
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description: Output connection from the TPDM to coresight
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funnel/TPDA.
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$ref: /schemas/graph.yaml#/properties/port
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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additionalProperties: false
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examples:
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# minimum TPDM definition. TPDM connect to coresight TPDA.
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- |
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tpdm@684c000 {
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compatible = "qcom,coresight-tpdm", "arm,primecell";
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reg = <0x0684c000 0x1000>;
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qcom,dsb-element-bits = <32>;
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qcom,dsb-msrs-num = <16>;
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clocks = <&aoss_qmp>;
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clock-names = "apb_pclk";
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out-ports {
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port {
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tpdm_prng_out_tpda_qdss: endpoint {
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remote-endpoint =
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<&tpda_qdss_in_tpdm_prng>;
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};
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};
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};
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};
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tpdm@6c29000 {
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compatible = "qcom,coresight-tpdm", "arm,primecell";
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reg = <0x06c29000 0x1000>;
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qcom,cmb-element-bits = <64>;
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qcom,cmb-msrs-num = <32>;
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clocks = <&aoss_qmp>;
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clock-names = "apb_pclk";
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out-ports {
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port {
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tpdm_ipcc_out_funnel_center: endpoint {
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remote-endpoint = <&funnel_center_in_tpdm_ipcc>;
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};
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};
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};
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};
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...
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