Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <07461501-775f-805e-01ba-dd927df57075@quicinc.com>
Date:   Mon, 21 Nov 2022 11:38:25 -0600
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
 Thunderbird/102.2.2
Subject: Re: [PATCH v4 1/3] dt-bindings: interconnect: Add rpmh virt devices
To:     Georgi Djakov <djakov@kernel.org>, Andy Gross <agross@kernel.org>,
        "Bjorn Andersson" <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
CC:     Odelu Kukatla <quic_okukatla@quicinc.com>,
        <linux-arm-msm@vger.kernel.org>, <linux-pm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
References: <20221118182245.31035-1-quic_molvera@quicinc.com>
 <20221118182245.31035-2-quic_molvera@quicinc.com>
 <3bc11449-bd5f-f4c4-98da-ebc0d7c8b309@kernel.org>
Content-Language: en-US
From:   Melody Olvera <quic_molvera@quicinc.com>
In-Reply-To: <3bc11449-bd5f-f4c4-98da-ebc0d7c8b309@kernel.org>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
Precedence: bulk


On 11/21/2022 9:23 AM, Georgi Djakov wrote:
> Hi Melody,
>
> On 18.11.22 20:22, Melody Olvera wrote:
>> Add documentation for virtual rpmh devices. These interconnects
>> are not controlled by the application processor and thus
>> require separate bindings. Also, move compatibles for sm8450 to
>> this document and add them for QDU1000/QRU1000 platforms.
>>
>> Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
>> ---
>>   .../bindings/interconnect/qcom,rpmh-virt.yaml | 55 +++++++++++++++++++
>>   .../bindings/interconnect/qcom,rpmh.yaml      |  2 -
>>   2 files changed, 55 insertions(+), 2 deletions(-)
>>   create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,rpmh-virt.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,rpmh-virt.yaml b/Documentation/devicetree/bindings/interconnect/qcom,rpmh-virt.yaml
>> new file mode 100644
>> index 000000000000..5cbaa51df863
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/interconnect/qcom,rpmh-virt.yaml
>> @@ -0,0 +1,55 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/interconnect/qcom,rpmh-virt.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Qualcomm RPMh Virtual Network-On-Chip Interconnect
>> +
>> +maintainers:
>> +  - Georgi Djakov <georgi.djakov@linaro.org>
>
> This email is not valid anymore, so please replace it with djakov@kernel.org.

Sounds good.

Melody
>
> Thanks,
> Georgi
>
>> +  - Odelu Kukatla <quic_okukatla@quicinc.com>
>> +
>> +description: |
>> +   RPMh interconnect providers support system bandwidth requirements through
>> +   RPMh hardware accelerators known as Bus Clock Manager (BCM). The provider is
>> +   able to communicate with the BCM through the Resource State Coordinator (RSC)
>> +   associated with each execution environment. Provider nodes must point to at
>> +   least one RPMh device child node pertaining to their RSC and each provider
>> +   can map to multiple RPMh resources. Virtual interconnect providers are not
>> +   controlled by AP and do not support QoS; they should not have associated
>> +   register regions.
>> +
>> +allOf:
>> +  - $ref: qcom,rpmh-common.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - qcom,qdu1000-clk-virt
>> +      - qcom,qdu1000-mc-virt
>> +      - qcom,sm8450-clk-virt
>> +      - qcom,sm8450-mc-virt
>> +
>> +  '#interconnect-cells': true
>> +
>> +required:
>> +  - compatible
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +      #include <dt-bindings/interconnect/qcom,sm8450.h>
>> +
>> +      clk_virt: interconnect-0 {
>> +             compatible = "qcom,sm8450-clk-virt";
>> +             #interconnect-cells = <2>;
>> +             qcom,bcm-voters = <&apps_bcm_voter>;
>> +      };
>> +
>> +      mc_virt: interconnect-1 {
>> +             compatible = "qcom,sm8450-mc-virt";
>> +             #interconnect-cells = <2>;
>> +             qcom,bcm-voters = <&apps_bcm_voter>;
>> +      };
>> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml b/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml
>> index a429a1ed1006..bd474f49deb0 100644
>> --- a/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml
>> +++ b/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml
>> @@ -123,11 +123,9 @@ properties:
>>         - qcom,sm8350-system-noc
>>         - qcom,sm8450-aggre1-noc
>>         - qcom,sm8450-aggre2-noc
>> -      - qcom,sm8450-clk-virt
>>         - qcom,sm8450-config-noc
>>         - qcom,sm8450-gem-noc
>>         - qcom,sm8450-lpass-ag-noc
>> -      - qcom,sm8450-mc-virt
>>         - qcom,sm8450-mmss-noc
>>         - qcom,sm8450-nsp-noc
>>         - qcom,sm8450-pcie-anoc
>