linux-kernel - Re: [PATCH 0/2] fdt: translate address if #size-cells = <0>

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Message-ID: <CAL_JsqKkpZw_BmcCXUzahF-FkQ=vb7mb_s95Lm2G7pWo0=dqNA@mail.gmail.com>
Date:   Tue, 6 Apr 2021 09:06:29 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Dario Binacchi <dariobin@...ero.it>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Bin Meng <bmeng.cn@...il.com>,
        Frank Rowand <frowand.list@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Tero Kristo <kristo@...nel.org>, devicetree@...r.kernel.org,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-omap <linux-omap@...r.kernel.org>
Subject: Re: [PATCH 0/2] fdt: translate address if #size-cells = <0>

On Fri, Apr 2, 2021 at 2:21 PM Dario Binacchi <dariobin@...ero.it> wrote:
>
>
> The series comes from my commit in U-boot
> d64b9cdcd4 ("fdt: translate address if #size-cells = <0>")
> and from the subsequent exchange of emails at the end of which I was
> suggested to send the patch to the linux kernel
> (https://patchwork.ozlabs.org/project/uboot/patch/1614324949-61314-1-git-send-email-bmeng.cn@gmail.com/).

It's 'ranges' that determines translatable which is missing from the
DT. This should have not had a 0 size either though maybe we could
support that.

Does the DT have to be updated anyways for your spread spectrum support?

> The second patch of the series aims to demonstrate that the first one, which
> enables the translation of addresses also for crossings of DT nodes
> with #size-cells = <0>, it really works.

I don't seem to have the 2nd patch... In any case, you should handle
the special case for this platform in code for the platform.

Rob