linux-kernel - Re: [PATCH V0 1/6] dt-bindings: Added the yaml bindings for DCC

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Date:   Wed, 17 Feb 2021 18:50:20 +0530
From:   schowdhu@...eaurora.org
To:     Vinod Koul <vkoul@...nel.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,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Subject: Re: [PATCH V0 1/6] dt-bindings: Added the yaml bindings for DCC

On 2021-02-17 16:32, Vinod Koul wrote:
> On 17-02-21, 12:18, Souradeep Chowdhury wrote:
>> Documentation for Data Capture and Compare(DCC) device tree bindings
>> in yaml format.
>> 
>> Signed-off-by: Souradeep Chowdhury <schowdhu@...eaurora.org>
>> ---
>>  .../devicetree/bindings/arm/msm/qcom,dcc.yaml      | 49 
>> ++++++++++++++++++++++
>>  1 file changed, 49 insertions(+)
>>  create mode 100644 
>> Documentation/devicetree/bindings/arm/msm/qcom,dcc.yaml
>> 
>> 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..8f09578
>> --- /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
> 
> space after .

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-base
>> +      - const: dcc-ram-base
> 
> drop dcc from names

Since DCC has a dedicated SRAM, this has been named like this as
only base and ram-base are generic names. Let me know if this is
still required to be changed.

> 
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - reg-names
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    dcc@...a2000{
>> +                compatible = "qcom,sm8150-dcc";
> 
> should this not be:
>                 compatible = "qcom,sm8150-dcc", "qcom,dcc";

Ack

> 
>> +                reg = <0 0x010a2000 0  0x1000>,
>> +                      <0 0x010ae000 0  0x2000>;
>> +                reg-names = "dcc-base", "dcc-ram-base";
>> +    };
>> --
>> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a 
>> member
>> of Code Aurora Forum, hosted by The Linux Foundation