netdev - Re: [PATCH net-next 2/2] net: ipa: add IPA v4.7 support

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Date:   Mon, 12 Dec 2022 15:54:50 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Alex Elder <elder@...aro.org>, davem@...emloft.net,
        edumazet@...gle.com, pabeni@...hat.com, andersson@...nel.org,
        agross@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, elder@...nel.org,
        linux-arm-msm@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luca Weiss <luca.weiss@...rphone.com>
Subject: Re: [PATCH net-next 2/2] net: ipa: add IPA v4.7 support

On Sat, 10 Dec 2022 10:31:14 +0100 Konrad Dybcio wrote:
> >> which in total gives us 0x146a8000-0x146aafff  
> > 
> > Can you tell me where you found this information?  
> [1], [2]
> 
> >   
> >> That would also mean all of your writes are kind of skewed, unless
> >> you already applied some offsets to them.  
> > 
> > This region is used by the modem, but must be set up
> > by the AP.
> >   
> >> (IMEM on 6350 starts at 0x14680000 and is 0x2e000 long, as per
> >> the bootloader memory map)  
> > 
> > On SM7250 (sorry, I don't know about 7225, or 6350 for that matter),
> > the IMEM starts at 0x14680000 and has length 0x2c000.  However that
> > memory is used by multiple entities.  The portion set aside for IPA
> > starts at 0x146a9000 and has size 0x2000.
> >   
> Not sure how 7250 relates to 6350, but I don't think there's much
> overlap..

Dunno if Alex is online, and the patches seem harmless so let me apply
as is so that they make 6.2, and we can follow up with corrections.