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Date: Wed, 17 Jan 2018 15:14:19 -0800
From: Brian Norris <briannorris@chromium.org>
To: Claudiu Beznea <Claudiu.Beznea@microchip.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
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Subject: Re: [PATCH v2 01/16] drivers: pwm: core: use a single of xlate
 function
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On Tue, Jan 16, 2018 at 10:24:59AM +0200, Claudiu Beznea wrote:
> Please explain me further. From this I understand, as a general rule,
> that the device tree binaries from, e.g. 3 years ago, should be
> compatible with, e.g. the current version of kernel?

Yes.

https://www.kernel.org/doc/Documentation/devicetree/bindings/ABI.txt