linux-kernel - RE: [EXT] Re: [PATCH 1/7] dt-bindings: arm: coresight-tmc: Add "memory-region" property

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Message-ID: <PH0PR18MB500225778CA4B807C6149D2BCEC9A@PH0PR18MB5002.namprd18.prod.outlook.com>
Date:   Fri, 6 Oct 2023 04:27:02 +0000
From:   Linu Cherian <lcherian@...vell.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "suzuki.poulose@....com" <suzuki.poulose@....com>,
        "mike.leach@...aro.org" <mike.leach@...aro.org>,
        "james.clark@....com" <james.clark@....com>,
        "leo.yan@...aro.org" <leo.yan@...aro.org>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "coresight@...ts.linaro.org" <coresight@...ts.linaro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        George Cherian <gcherian@...vell.com>
Subject: RE: [EXT] Re: [PATCH 1/7] dt-bindings: arm: coresight-tmc: Add
 "memory-region" property

Hi Krzysztof,

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Sent: Tuesday, October 3, 2023 12:02 PM
> To: Linu Cherian <lcherian@...vell.com>; suzuki.poulose@....com;
> mike.leach@...aro.org; james.clark@....com; leo.yan@...aro.org
> Cc: linux-arm-kernel@...ts.infradead.org; coresight@...ts.linaro.org; linux-
> kernel@...r.kernel.org; robh+dt@...nel.org;
> krzysztof.kozlowski+dt@...aro.org; conor+dt@...nel.org;
> devicetree@...r.kernel.org; Sunil Kovvuri Goutham
> <sgoutham@...vell.com>; George Cherian <gcherian@...vell.com>
> Subject: Re: [EXT] Re: [PATCH 1/7] dt-bindings: arm: coresight-tmc: Add
> "memory-region" property
> 
> On 03/10/2023 06:33, Linu Cherian wrote:
> > Hi Krzysztof,
> >
> >> -----Original Message-----
> >> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> >> Sent: Saturday, September 30, 2023 8:59 PM
> >> To: Linu Cherian <lcherian@...vell.com>; suzuki.poulose@....com;
> >> mike.leach@...aro.org; james.clark@....com; leo.yan@...aro.org
> >> Cc: linux-arm-kernel@...ts.infradead.org; coresight@...ts.linaro.org;
> >> linux- kernel@...r.kernel.org; robh+dt@...nel.org;
> >> krzysztof.kozlowski+dt@...aro.org; conor+dt@...nel.org;
> >> devicetree@...r.kernel.org; Sunil Kovvuri Goutham
> >> <sgoutham@...vell.com>; George Cherian <gcherian@...vell.com>
> >> Subject: [EXT] Re: [PATCH 1/7] dt-bindings: arm: coresight-tmc: Add
> >> "memory-region" property
> >>
> >> External Email
> >>
> >> ---------------------------------------------------------------------
> >> - On 29/09/2023 15:37, Linu Cherian wrote:
> >>> memory-region 0: Reserved trace buffer memory
> >>>
> >>>   TMC ETR: When available, use this reserved memory region for
> >>>   trace data capture. Same region is used for trace data
> >>>   retention after a panic or watchdog reset.
> >>>
> >>>   TMC ETF: When available, use this reserved memory region for
> >>>   trace data retention synced from internal SRAM after a panic or
> >>>   watchdog reset.
> >>>
> >>> memory-region 1: Reserved meta data memory
> >>>
> >>>   TMC ETR, ETF: When available, use this memory for register
> >>>   snapshot retention synced from hardware registers after a panic
> >>>   or watchdog reset.
> >>>
> >>> Signed-off-by: Linu Cherian <lcherian@...vell.com>
> >>> ---
> >>
> >> Where is the changelog? This is supposed to be v4 or something later.
> >> Please, keep proper versioning and changelog.
> >
> > Sure, will add the changelog from next version onwards.
> >
> > Yeah, the last version was RFC v3 and the RFC tag has been dropped from
> this version onwards.
> > Hence started this version with V1.
> 
> v1 says it is the first version, but you already had three others.
> Please keep continuous version log, regardless whether you call it RFC or RFT
> or RFsomething.

Okay. Will continue with Patch V5 from next series and add necessary notes in cover letter.

> 
> >
> >>
> >>>  .../bindings/arm/arm,coresight-tmc.yaml       | 19
> +++++++++++++++++++
> >>>  1 file changed, 19 insertions(+)
> >>>
> 
> Best regards,
> Krzysztof