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Message-ID: <3ada611b-96e0-5cf0-d79d-b90ca4202ddb@quicinc.com>
Date: Mon, 21 Nov 2022 11:39:39 -0600
From: Melody Olvera <quic_molvera@...cinc.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Georgi Djakov <djakov@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC: Odelu Kukatla <quic_okukatla@...cinc.com>,
<linux-arm-msm@...r.kernel.org>, <linux-pm@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 1/3] dt-bindings: interconnect: Add rpmh virt devices
On 11/20/2022 5:13 AM, Krzysztof Kozlowski wrote:
> On 18/11/2022 19:22, 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@...cinc.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@...aro.org>
>> + - Odelu Kukatla <quic_okukatla@...cinc.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
> You should also move qcom,sdx65-mc-virt, qcom,sc8280xp-mc-virt,
> qcom,sc8280xp-clk-virt and more.
Ok. I wasn't sure since some of these entries don't seem to conform to
these bindings, even though it seems they should.
>
>> +
>> + '#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>;
> These are exactly the same examples, so just keep one.
Sounds good.
Thanks,
Melody
>
> Best regards,
> Krzysztof
>
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