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Date:   Thu, 26 Nov 2020 18:39:22 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     Dmitry Osipenko <digetx@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Mikko Perttunen <cyndis@...si.fi>,
        Viresh Kumar <vireshk@...nel.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v7 17/47] dt-bindings: memory: tegra20: Add memory client
 IDs

On Thu, Nov 26, 2020 at 06:26:05PM +0100, Thierry Reding wrote:
> On Wed, Nov 04, 2020 at 07:48:53PM +0300, Dmitry Osipenko wrote:
> > Each memory client has unique hardware ID, add these IDs.
> > 
> > Acked-by: Rob Herring <robh@...nel.org>
> > Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> > ---
> >  include/dt-bindings/memory/tegra20-mc.h | 53 +++++++++++++++++++++++++
> >  1 file changed, 53 insertions(+)
> 
> Is there any chance you could drop these dt-bindings include patches
> (17, 18 and 19) so that I can pick them up into the Tegra tree? The
> device tree changes that I was going to pick up depend on this and
> fail to build if applied as-is.
> 
> I was looking at your linux-mem-ctrl tree and had initially thought I
> could just pull in one of the branches to get these dependencies, but it
> looks like the dt-bindings patches are on the for-v5.11/tegra-mc branch,
> which the ARM SoC maintainers wouldn't like to see me pull in for a
> dependency on device tree changes.

Partially you answered here. :) Since you should not pull my branch into
a DT branch, you also should not put these include/dt-bindings patches
there.  SoC guys will complain about this as well.

These patches are also needed for the driver, so if you take them, I
would need them back in a pull request. SoC folks could spot it as well
and point that such merge should not happen.

> If this is all fixed at this point, I'll just have to push back the
> device tree changes to v5.12, or perhaps see if the ARM SoC maintainers
> are willing to take a late pull request that's based on v5.11-rc1.

Yeah, that's a known problem. I asked about this Arnd and Olof in the
past and got reply with two solutions:
1. Apply current version of patch without defines, just hard-coded
   numbers. After merging to Linus, replace the numbers with defines.

2. Wait with DTS till dependencies reach Linus.

Best regards,
Krzysztof

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