linux-kernel - Re: [PATCH 5/6] dt-bindings: spi: Tegra QUAD SPI combined sequence

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Date:   Fri, 4 Feb 2022 13:47:38 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Krishna Yarlagadda <kyarlagadda@...dia.com>
Cc:     thierry.reding@...il.com, jonathanh@...dia.com,
        linux-spi@...r.kernel.org, linux-tegra@...r.kernel.org,
        skomatineni@...dia.com, ldewangan@...dia.com, robh+dt@...nel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        p.zabel@...gutronix.de
Subject: Re: [PATCH 5/6] dt-bindings: spi: Tegra QUAD SPI combined sequence

On Fri, Feb 04, 2022 at 03:59:35PM +0530, Krishna Yarlagadda wrote:

> +  nvidia,cmb-xfer:
> +    description:
> +      Enable combined sequence transfers for read and program sequence
> +      if supported by hardware. Tegra194 and later chips support this
> +      feature. Default is non combined sequence. SPI message should
> +      contain CMD-ADDR-DATA transfers to combine and send to hardware.
> +    type: boolean

Why is this a DT property - why would systems not wish to use this
feature if it is available?

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