linux-kernel - Re: [PATCH v2 4/7] arm64: dts: qcom: Add msm8939 SoC

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Message-ID: <5eabb9a1-d748-a9ef-e966-80eee55a74a2@linaro.org>
Date:   Tue, 10 Jan 2023 15:47:38 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        agross@...nel.org, andersson@...nel.org, djakov@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        benl@...areup.com, shawn.guo@...aro.org, fabien.parent@...aro.org,
        leo.yan@...aro.org, dmitry.baryshkov@...aro.org,
        Jun Nie <jun.nie@...aro.org>,
        James Willcox <jwillcox@...areup.com>,
        Joseph Gates <jgates@...areup.com>,
        Max Chen <mchen@...areup.com>, Zac Crosby <zac@...areup.com>,
        Vincent Knecht <vincent.knecht@...loo.org>,
        Stephan Gerhold <stephan@...hold.net>
Subject: Re: [PATCH v2 4/7] arm64: dts: qcom: Add msm8939 SoC



On 10.01.2023 14:42, Bryan O'Donoghue wrote:
> On 10/01/2023 13:24, Krzysztof Kozlowski wrote:
>> On 10/01/2023 14:14, Bryan O'Donoghue wrote:
>>> On 03/01/2023 09:14, Krzysztof Kozlowski wrote:
>>>> ../arch/arm64/boot/dts/qcom/msm8939.dtsi:1825.23-1842.5: Warning
>>>> (simple_bus_reg): /soc@...mc@...4000: simple-bus unit address format
>>>> error, expected "7824900
>>>
>>> For the record the driver consuming this dt entry requires the host regs
>>> to come first followed by the core
>>>
>>> sdhc_1: mmc@...4000 {
>>>           compatible = "qcom,msm8916-sdhci", "qcom,sdhci-msm-v4";
>>>           reg = <0x07824900 0x11c>, <0x07824000 0x800>;
>>>           reg-names = "hc", "core";
>>> }
>>>
>>> If I change this and the msm8916 to
>>
>> That's not the solution. The warning is saying that unit address does
>> not match your reg. You need to correct unit address.
>>
>> Best regards,
>> Krzysztof
>>
> 
> Is it not the case that the unit-address should match the first reg
Yes

 and that the first reg should also be the lowest address ?
Depends on what the first reg is, bindings usually dictate the order.

Konrad
> 
> ---
> bod