linux-kernel - Re: [PATCH v6 2/4] pps: descriptor-based gpio, capture-clear addition

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Message-ID: <20181113151444.cszd2zdwoast3545@localhost>
Date:   Tue, 13 Nov 2018 07:14:44 -0800
From:   Richard Cochran <richardcochran@...il.com>
To:     Tom Burkart <tom@...sec.com>
Cc:     Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 2/4] pps: descriptor-based gpio, capture-clear addition

On Tue, Nov 13, 2018 at 02:40:05PM +1100, Tom Burkart wrote:
> The change from integer based GPIO API to the descriptor based API
> breaks backward compatibility for the devicetree.  This is due to
> the descriptor based API appending "-gpio" or "-gpios" (see
> Documentation/gpio/base.txt.)

Device tree is a user space facing ABI, and so you must continue to
support the legacy binding as well.

Thanks,
Richard