linux-kernel - Re: [PATCH v5 1/7] dt-bindings: arm: coresight-tmc: Add "memory-region" property

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Message-ID: <170015126381.2422288.18051157836489485044.robh@kernel.org>
Date:   Thu, 16 Nov 2023 10:14:24 -0600
From:   Rob Herring <robh@...nel.org>
To:     Linu Cherian <lcherian@...vell.com>
Cc:     devicetree@...r.kernel.org, conor+dt@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        sgoutham@...vell.com, mike.leach@...aro.org,
        coresight@...ts.linaro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, suzuki.poulose@....com,
        james.clark@....com, gcherian@...vell.com, leo.yan@...aro.org
Subject: Re: [PATCH v5 1/7] dt-bindings: arm: coresight-tmc: Add
 "memory-region" property


On Fri, 10 Nov 2023 16:55:27 +0530, 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>
> ---
> Changelog from v4:
> * Description is more explicit on the usage of reserved trace buffer
>   regions
> * Removed "mem" suffix from the memory region names
> 
>  .../bindings/arm/arm,coresight-tmc.yaml       | 25 +++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 

Reviewed-by: Rob Herring <robh@...nel.org>