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    Subject[PATCH v15 3/8] dt-bindings: arm: Adds CoreSight TPDM hardware
    Date
    Adds new coresight-tpdm.yaml file describing the bindings required
    to define tpdm in the device trees.

    Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
    Reviewed-by: Mike Leach <mike.leach@linaro.org>
    Reviewed-by: Rob Herring <robh@kernel.org>
    Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
    Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
    ---
    .../bindings/arm/qcom,coresight-tpdm.yaml | 93 +++++++++++++++++++
    MAINTAINERS | 1 +
    2 files changed, 94 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml

    diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
    new file mode 100644
    index 000000000000..5881cb41da70
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
    @@ -0,0 +1,93 @@
    +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
    +# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/arm/qcom,coresight-tpdm.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Trace, Profiling and Diagnostics Monitor - TPDM
    +
    +description: |
    + The TPDM or Monitor serves as data collection component for various dataset
    + types specified in the QPMDA spec. It covers Implementation defined ((ImplDef),
    + Basic Counts (BC), Tenure Counts (TC), Continuous Multi-Bit (CMB), and Discrete
    + Single Bit (DSB). It performs data collection in the data producing clock
    + domain and transfers it to the data collection time domain, generally ATB
    + clock domain.
    +
    + The primary use case of the TPDM is to collect data from different data
    + sources and send it to a TPDA for packetization, timestamping, and funneling.
    +
    +maintainers:
    + - Mao Jinlong <quic_jinlmao@quicinc.com>
    + - Tao Zhang <quic_taozha@quicinc.com>
    +
    +# Need a custom select here or 'arm,primecell' will match on lots of nodes
    +select:
    + properties:
    + compatible:
    + contains:
    + enum:
    + - qcom,coresight-tpdm
    + required:
    + - compatible
    +
    +properties:
    + $nodename:
    + pattern: "^tpdm(@[0-9a-f]+)$"
    + compatible:
    + items:
    + - const: qcom,coresight-tpdm
    + - const: arm,primecell
    +
    + reg:
    + minItems: 1
    + maxItems: 2
    +
    + clocks:
    + maxItems: 1
    +
    + clock-names:
    + items:
    + - const: apb_pclk
    +
    + out-ports:
    + description: |
    + Output connections from the TPDM to coresight funnel/TPDA.
    + $ref: /schemas/graph.yaml#/properties/ports
    +
    + properties:
    + port:
    + description: Output connection from the TPDM to coresight
    + funnel/TPDA.
    + $ref: /schemas/graph.yaml#/properties/port
    +
    +required:
    + - compatible
    + - reg
    + - clocks
    + - clock-names
    +
    +additionalProperties: false
    +
    +examples:
    + # minimum TPDM definition. TPDM connect to coresight TPDA.
    + - |
    + tpdm@684c000 {
    + compatible = "qcom,coresight-tpdm", "arm,primecell";
    + reg = <0x0684c000 0x1000>;
    +
    + clocks = <&aoss_qmp>;
    + clock-names = "apb_pclk";
    +
    + out-ports {
    + port {
    + tpdm_prng_out_tpda_qdss: endpoint {
    + remote-endpoint =
    + <&tpda_qdss_in_tpdm_prng>;
    + };
    + };
    + };
    + };
    +
    +...
    diff --git a/MAINTAINERS b/MAINTAINERS
    index 256f03904987..1cf03790485c 100644
    --- a/MAINTAINERS
    +++ b/MAINTAINERS
    @@ -2060,6 +2060,7 @@ S: Maintained
    T: git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
    F: Documentation/ABI/testing/sysfs-bus-coresight-devices-*
    F: Documentation/devicetree/bindings/arm/arm,coresight-*.yaml
    +F: Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
    F: Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml
    F: Documentation/devicetree/bindings/arm/arm,trace-buffer-extension.yaml
    F: Documentation/trace/coresight/*
    --
    2.17.1
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