linux-kernel - Re: [PATCH] arm64: dts: Add support for Unisoc's UMS512

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Message-ID: <CAAfSe-tiF4--dYuKWgHUm52bMX3uSwxvWKKNRd=DFJTZZ=1x8A@mail.gmail.com>
Date:   Tue, 7 Feb 2023 16:21:13 +0800
From:   Chunyan Zhang <zhang.lyra@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Chunyan Zhang <chunyan.zhang@...soc.com>,
        Arnd Bergmann <arnd@...db.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, soc@...nel.org,
        devicetree@...r.kernel.org,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Orson Zhai <orsonzhai@...il.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: Add support for Unisoc's UMS512

On Tue, 7 Feb 2023 at 15:59, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 07/02/2023 03:19, Chunyan Zhang wrote:
> > On Thu, 19 Jan 2023 at 19:40, Krzysztof Kozlowski
> > <krzysztof.kozlowski@...aro.org> wrote:
> >>
> >> On 18/01/2023 09:40, Chunyan Zhang wrote:
> >>> Add basic support for Unisoc's UMS512, with this patch,
> >>> the board ums512-1h10 can run into console.
> >>>
> >
> > [snip]
> >
> >>> +             ap-apb {
> >>
> >> Non-unit-address nodes cannot be mixed with unit address ones. Something
> >> is wrong here.
> >
> > To make sure I understand correctly, did you mean non-unit-address
> > nodes shouldn't be the parent of unit-address nodes?
> >
> > Does that mean the bus node should have a unique base address like:
> >         ap-apb@...00000 {
>
> No. I mean, run dtbs W=1 or dtbs_check DT_SCHEMA_FILES=simple-bus

Ok, I will fix that according to the report.

BTW, where can I see what W=1 means?

Thanks,
Chunyan

>
>
> Best regards,
> Krzysztof
>