linux-kernel - Re: [PATCH v4 5/9] spi: spi-mem: Mark dummy transfers by setting dummy

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Message-ID: <20201221165053.GA4521@sirena.org.uk>
Date:   Mon, 21 Dec 2020 16:50:53 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Sowjanya Komatineni <skomatineni@...dia.com>
Cc:     Pratyush Yadav <p.yadav@...com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        thierry.reding@...il.com, jonathanh@...dia.com, robh+dt@...nel.org,
        lukas@...ner.de, bbrezillon@...nel.org,
        tudor.ambarus@...rochip.com, linux-spi@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v4 5/9] spi: spi-mem: Mark dummy transfers by setting
 dummy_data bit

On Fri, Dec 18, 2020 at 02:01:56PM -0800, Sowjanya Komatineni wrote:

> From quick check, I see HW dummy cycles transfer of 128KB shows 18 Mb/s
> while SW transfer of bytes shows 17.3 MB/s on average.

OK, it's not going to revolutionize the world or anything but that's
definitely a speedup.

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