linux-kernel - Re: [PATCH V2 1/5] dt-bindings: Added the yaml bindings for DCC

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Date:   Thu, 01 Apr 2021 13:52:07 +0530
From:   schowdhu@...eaurora.org
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Rajendra Nayak <rnayak@...eaurora.org>, vkoul@...nel.org
Subject: Re: [PATCH V2 1/5] dt-bindings: Added the yaml bindings for DCC

On 2021-03-30 01:04, Stephen Boyd wrote:
> Quoting Souradeep Chowdhury (2021-03-25 01:02:32)
>> diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml 
>> b/Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml
>> new file mode 100644
>> index 0000000..c6e0a9c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml
>> @@ -0,0 +1,49 @@
>> +# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/arm/msm/qcom,dcc.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Data Capture and Compare
>> +
>> +maintainers:
>> +  - Souradeep Chowdhury <schowdhu@...eaurora.org>
>> +
>> +description: |
>> +    DCC (Data Capture and Compare) is a DMA engine which is used to 
>> save
>> +    configuration data or system memory contents during catastrophic 
>> failure
>> +    or SW trigger.DCC is used to capture and store data for debugging 
>> purpose
> 
> Add space between trigger. and DCC?

Ack

> 
>> +
>> +
> 
> Drop double newline?

Ack

> 
>> +properties:
>> +  compatible:
>> +    items:
>> +      - enum:
>> +          - qcom,sm8150-dcc
>> +      - const: qcom,dcc
>> +
>> +  reg:
>> +    items:
>> +      - description: DCC base register region
>> +      - description: DCC RAM base register region
>> +
>> +  reg-names:
>> +    items:
>> +      - const: dcc
>> +      - const: dcc-ram
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - reg-names
> 
> Do we really need reg names? Seems like we can assume the ordering.

Ack

> 
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    dcc@...2000{
> 
> dma@...2000? Or debug@...2000?

Ack

> 
>> +                compatible = "qcom,sm8150-dcc","qcom,dcc";
>> +                reg = <0x010a2000  0x1000>,
>> +                      <0x010ad000  0x2000>;
>> +                reg-names = "dcc", "dcc-ram";
>> +    };