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Message-ID: <ab027359-02be-2204-8a09-b1e5170bdba8@arm.com>
Date: Mon, 23 May 2022 10:02:13 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: Mao Jinlong <quic_jinlmao@...cinc.com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Konrad Dybcio <konradybcio@...il.com>,
Mike Leach <mike.leach@...aro.org>,
Rob Herring <robh@...nel.org>
Cc: Leo Yan <leo.yan@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Tingwei Zhang <quic_tingweiz@...cinc.com>,
Yuanfang Zhang <quic_yuanfang@...cinc.com>,
Tao Zhang <quic_taozha@...cinc.com>,
Trilok Soni <quic_tsoni@...cinc.com>,
Hao Zhang <quic_hazha@...cinc.com>,
linux-arm-msm@...r.kernel.org,
Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: Re: [PATCH v7 03/10] dt-bindings: arm: Adds CoreSight TPDM hardware
definitions
Cc: Rob Herring
Hi
Please Cc Rob for any new DT/Yaml additions. I have done so now.
On 09/05/2022 14:39, Mao Jinlong wrote:
> Adds new coresight-tpdm.yaml file describing the bindings required
> to define tpdm in the device trees.
>
> Reviewed-by: Mike Leach <mike.leach@...aro.org>
> Signed-off-by: Tao Zhang <quic_taozha@...cinc.com>
> Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
Acked-by: Suzuki K Poulose <suzuki.poulose@....com>
> ---
> .../bindings/arm/coresight-tpdm.yaml | 99 +++++++++++++++++++
> .../devicetree/bindings/arm/coresight.txt | 7 ++
> MAINTAINERS | 1 +
> 3 files changed, 107 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
>
> diff --git a/Documentation/devicetree/bindings/arm/coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
> new file mode 100644
> index 000000000000..451342d3d8b7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
> @@ -0,0 +1,99 @@
> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
> +# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/coresight-tpdm.yaml#
> +$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@...cinc.com>
> + - Tao Zhang <quic_taozha@...cinc.com>
> +
> +properties:
> + $nodename:
> + pattern: "^tpdm(@[0-9a-f]+)$"
> + compatible:
> + items:
> + - const: qcom,coresight-tpdm
> + - const: arm,primecell
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + clock-names:
> + items:
> + - const: apb_pclk
> +
> + out-ports:
> + description: |
> + Output connections from the TPDM to coresight funnle/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 funnel.
> + - |
> + tpdm@...0000 {
> + compatible = "qcom,coresight-tpdm", "arm,primecell";
> + reg = <0x6980000 0x1000>;
> +
> + clocks = <&aoss_qmp>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + tpdm_turing_out_funnel_turing: endpoint {
> + remote-endpoint =
> + <&funnel_turing_in_tpdm_turing>;
> + };
> + };
> + };
> + };
> + # minimum TPDM definition. TPDM connect to coresight TPDA.
> + - |
> + tpdm@...c000 {
> + compatible = "qcom,coresight-tpdm", "arm,primecell";
> + reg = <0x684c000 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/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt
> index c68d93a35b6c..f7ce8af48574 100644
> --- a/Documentation/devicetree/bindings/arm/coresight.txt
> +++ b/Documentation/devicetree/bindings/arm/coresight.txt
> @@ -52,6 +52,10 @@ its hardware characteristcs.
> "arm,coresight-cti", "arm,primecell";
> See coresight-cti.yaml for full CTI definitions.
>
> + - Trace, Profiling and Diagnostics Monitor (TPDM):
> + "qcom,coresight-tpdm", "arm,primecell";
> + See coresight-tpdm.yaml for full TPDM definitions.
> +
> * reg: physical base address and length of the register
> set(s) of the component.
>
> @@ -82,6 +86,9 @@ its hardware characteristcs.
> * Required properties for Coresight Cross Trigger Interface (CTI)
> See coresight-cti.yaml for full CTI definitions.
>
> +* Required properties for Trace, Profiling and Diagnostics Monitor (TPDM)
> + See coresight-tpdm.yaml for full TPDM definitions.
> +
> * Required properties for devices that don't show up on the AMBA bus, such as
> non-configurable replicators and non-configurable funnels:
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index edc96cdb85e8..28d32b3f3f5c 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -1978,6 +1978,7 @@ 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/coresight-cpu-debug.txt
> F: Documentation/devicetree/bindings/arm/coresight-cti.yaml
> +F: Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
> F: Documentation/devicetree/bindings/arm/coresight.txt
> F: Documentation/devicetree/bindings/arm/ete.yaml
> F: Documentation/devicetree/bindings/arm/trbe.yaml
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