linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: msm8953: Add device tree for Billion Capture+

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Message-ID: <9830cf03-911e-478a-adfd-2302bd3512d5@oss.qualcomm.com>
Date: Sat, 21 Jun 2025 13:34:11 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Luca Weiss <luca@...aweiss.eu>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        cristian_ci <cristian_ci@...tonmail.com>,
        "robh@...nel.org"
 <robh@...nel.org>,
        "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "andersson@...nel.org" <andersson@...nel.org>,
        "konradybcio@...nel.org" <konradybcio@...nel.org>
Cc: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "~postmarketos/upstreaming@...ts.sr.ht"
 <~postmarketos/upstreaming@...ts.sr.ht>,
        "phone-devel@...r.kernel.org" <phone-devel@...r.kernel.org>
Subject: Re: [PATCH 3/3] arm64: dts: qcom: msm8953: Add device tree for
 Billion Capture+

On 6/21/25 12:53 PM, Luca Weiss wrote:
> 
> 
> Konrad Dybcio <konrad.dybcio@....qualcomm.com> schreef op 21 juni 2025 12:11:00 CEST:
>> On 6/21/25 11:27 AM, Luca Weiss wrote:
>>> On 21-06-2025 9:07 a.m., cristian_ci wrote:
>>>> On Saturday, June 21st, 2025 at 00:20, Luca Weiss <luca@...aweiss.eu> wrote:

[...]

>>> which means that you should only have one value for address, and one for size, so "reg = <0x84a00000 0x1900000>;". This is different to most other Qualcomm arm64 SoCs.
>>
>> reserved-memory {
>>                #address-cells = <2>;
>>                #size-cells = <2>;
>>                ranges;
> 
> Huh, why this mix'n'match in this SoC... Fun

I *think* some of these older SoCs should be able to address more than
32 bits of memory, so it makes sense in that way

Konrad