linux-kernel - Re: [PATCH 2/3] dt-bindings: add binding for at91-usart in spi mode

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Date:   Thu, 19 Apr 2018 15:07:14 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Radu Pirea <radu.pirea@...rochip.com>, robh+dt@...nel.org,
        mark.rutland@....com, linux-kernel@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: add binding for at91-usart in spi mode

On Thu, Apr 19, 2018 at 03:32:33PM +0200, Alexandre Belloni wrote:

> My suggestion was to add an MFD driver that would match the current
> compatible and either have an atmel,usart-mode property or maybe more
> risky, check whether there are children nodes. Based on that, the
> correct platform device can be added, either an usart or an spi master
> device can be registered.

Yeah, that's another approach which could work and is a bit easier from
the DT point of view - the PXA stuff predated DT and was adapted into
it.

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