netdev - Re: [PATCH 1/3] dt-bindings: sram: qcom,imem: Allow modem-tables

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Message-ID: <81093c19-a6f7-4653-9688-ca891fd2548b@oss.qualcomm.com>
Date: Fri, 23 May 2025 20:13:36 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Alex Elder <elder@...e.org>, Konrad Dybcio <konradybcio@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Andrew Lunn <andrew+netdev@...n.ch>,
        "David S. Miller"
 <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Alex Elder <elder@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: sram: qcom,imem: Allow modem-tables

On 5/23/25 7:59 PM, Alex Elder wrote:
> On 5/22/25 6:08 PM, Konrad Dybcio wrote:
>> From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
>>
>> The IP Accelerator hardware/firmware owns a sizeable region within the
>> IMEM, ominously named 'modem-tables', presumably having to do with some
>> internal IPA-modem specifics.
>>
>> It's not actually accessed by the OS, although we have to IOMMU-map it
>> with the IPA device, so that presumably the firmware can act upon it.
>>
>> Allow it as a subnode of IMEM.
>>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> 
> So this will just show up as a subnode of an sram@... node,
> the way "qcom,pil-reloc-info" does.  This is great.
> 
> Is it called "modem-tables" in internal documentation?  Or
> did you choose this ominous name?

Downstream. It's hard to find accurate information on this.

Konrad