linux-kernel - Re: [PATCH] dt-bindings: clock: imx8mq: Fix numbering overlaps and gaps

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Message-ID: <20190312073654.GA85609@thor.local>
Date:   Tue, 12 Mar 2019 08:36:54 +0100
From:   Patrick Wildt <patrick@...eri.se>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Abel Vesa <abel.vesa@....com>,
        Fabio Estevam <fabio.estevam@....com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        dl-linux-imx <linux-imx@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: clock: imx8mq: Fix numbering overlaps and
 gaps

On Fri, Mar 08, 2019 at 07:29:05AM -0800, Stephen Boyd wrote:
> It's mostly about making sure that any existing dtbs don't have their
> numbers shifted around. So hopefully any overlapping identifiers aren't
> in use yet and then those ids can be changed while leaving the ones that
> are in use how they are.

In practice I bet no one uses Linux 5.0's i.MX8M device trees since they
lack too much support.  It's so basic it's not useful.  You'd still run
your existing non-mainline bindings until it is.  Thus I would argue
changing the ABI right now would be the only chance there is.

If you think that chance is gone, then I guess the reasonable thing is
to keep the numbers and only move those (to the end) which overlap.  Or
put them into that erreneous number gap.

Patrick