[PATCH v7 08/10] dt-bindings: arm: Adds CoreSight TPDA hardware definitions

[Jinlong Mao]

Thanks Rob and Suzuki for the review.

I will fix the warning and update in next version.

On 5/23/2022 10:24 PM, Rob Herring wrote:
> On Mon, May 23, 2022 at 4:44 AM Suzuki K Poulose <suzuki.poulose at arm.com> wrote:
>> Cc: Rob Herring
>>
> Will or will not have any effect...
>
> Please use get_maintainers.pl and send your patches to the right
> lists/maintainers. DT patches only get reviewed if sent to DT list. So
> please resend to the DT list. But before you do, I can tell this
> binding hasn't been tested so fix all the warnings first.
>
> Rob
>
>>
>> On 09/05/2022 14:39, Mao Jinlong wrote:
>>> Adds new coresight-tpda.yaml file describing the bindings required
>>> to define tpda in the device trees.
>>>
>>> Reviewed-by: Mike Leach <mike.leach at linaro.org>
>>> Signed-off-by: Tao Zhang <quic_taozha at quicinc.com>
>>> Signed-off-by: Mao Jinlong <quic_jinlmao at quicinc.com>
>>> ---
>>>    .../bindings/arm/coresight-tpda.yaml          | 119 ++++++++++++++++++
>>>    MAINTAINERS                                   |   1 +
>>>    2 files changed, 120 insertions(+)
>>>    create mode 100644 Documentation/devicetree/bindings/arm/coresight-tpda.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/arm/coresight-tpda.yaml b/Documentation/devicetree/bindings/arm/coresight-tpda.yaml
>>> new file mode 100644
>>> index 000000000000..4948ac13e7f8
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/arm/coresight-tpda.yaml
>>> @@ -0,0 +1,119 @@
>>> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
>>> +# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/arm/coresight-tpda.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Trace, Profiling and Diagnostics Aggregator - TPDA
>>> +
>>> +description: |
>>> +  TPDAs are responsible for packetization and timestamping of data sets
>>> +  utilizing the MIPI STPv2 packet protocol. Pulling data sets from one or
>>> +  more attached TPDM and pushing the resultant (packetized) data out a
>>> +  master ATB interface. Performing an arbitrated ATB interleaving (funneling)
>>> +  task for free-flowing data from TPDM (i.e. CMB and DSB data set flows).
>>> +
>>> +maintainers:
>>> +  - Mao Jinlong <quic_jinlmao at quicinc.com>
>>> +  - Tao Zhang <quic_taozha at quicinc.com>
>>> +
>>> +properties:
>>> +  $nodename:
>>> +    pattern: "^tpda(@[0-9a-f]+)$"
>>> +  compatible:
>>> +    items:
>>> +      - const: qcom,coresight-tpda
>>> +      - const: arm,primecell
>>> +
>>> +  reg:
>>> +    maxItems: 1
>>> +
>>> +  clocks:
>>> +    maxItems: 1
>>> +
>>> +  clock-names:
>>> +    items:
>>> +      - const: apb_pclk
>>> +
>>> +  in-ports:
>>> +    type: object
>>> +    description: |
>>> +      Input connections from TPDM to TPDA
>>> +    $ref: /schemas/graph.yaml#/properties/ports
>>> +
>> --->8---
>>> +    properties:
>>> +      '#address-cells':
>>> +        const: 1
>>> +
>>> +      '#size-cells':
>>> +        const: 0
>>> +
>>> +    patternProperties:
>>> +      "^port@[0-9a-f]+$":
>>> +        type: object
>>> +        required:
>>> +          - reg
>>> +
>>> +    required:
>>> +      - '#size-cells'
>>> +      - '#address-cells'
>> ---8<---
>>
>> I believe the above snippet is not needed and is covered by the generic
>> ports.
>>
>>
>>> +
>>> +  out-ports:
>>> +    type: object
>>> +    description: |
>>> +      Output connections from the TPDA to legacy CoreSight trace bus.
>>> +    $ref: /schemas/graph.yaml#/properties/ports
>>> +
>>> +    properties:
>>> +     port:
>>> +       description:
>>> +         Output connection from the TPDA to legacy CoreSight Trace bus.
>>> +       $ref: /schemas/graph.yaml#/properties/port
>>> +
>>> +required:
>>> +    - compatible
>>> +    - reg
>>> +    - clocks
>>> +    - clock-names
>>> +    - in-ports
>>> +    - out-ports
>>> +
>>> +additionalProperties: false
>>> +
>>> +examples:
>>> +  # minimum tpda definition.
>>> +  - |
>>> +    tpda at 6004000 {
>>> +       compatible = "qcom,coresight-tpda", "arm,primecell";
>>> +       reg = <0x6004000 0x1000>;
>>> +
>>> +       qcom,tpda-atid = <65>;
>>> +
>>> +       clocks = <&aoss_qmp>;
>>> +       clock-names = "apb_pclk";
>>> +
>>> +       in-ports {
>>> +         #address-cells = <1>;
>>> +         #size-cells = <0>;
>>> +
>>> +        port at 0 {
>>> +          reg = <0>;
>>> +          tpda_qdss_0_in_tpdm_dcc: endpoint {
>>> +            remote-endpoint =
>>> +              <&tpdm_dcc_out_tpda_qdss_0>;
>>> +            };
>>> +        };
>>> +      };
>>> +
>>> +       out-ports {
>>> +         port {
>>> +                 tpda_qdss_out_funnel_in0: endpoint {
>>> +                    remote-endpoint =
>>> +                    <&funnel_in0_in_tpda_qdss>;
>>> +                  };
>>> +          };
>>> +       };
>>> +    };
>>> +
>>> +...
>>> diff --git a/MAINTAINERS b/MAINTAINERS
>>> index 28d32b3f3f5c..5d2d8c0ee340 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-tpda.yaml
>>>    F:  Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
>>>    F:  Documentation/devicetree/bindings/arm/coresight.txt
>>>    F:  Documentation/devicetree/bindings/arm/ete.yaml
>> Otherwise looks good to me.
>>
>> Suzuki