From: Vladimir Oltean <vladimir.oltean@nxp.com>
To: James Clark <james.clark@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>, Frank Li <Frank.li@nxp.com>,
Vladimir Oltean <olteanv@gmail.com>,
Mark Brown <broonie@kernel.org>,
linux-spi@vger.kernel.org, imx@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/4] spi: spi-fsl-dspi: Use non-coherent memory for DMA
Date: Wed, 11 Jun 2025 12:01:07 +0300 [thread overview]
Message-ID: <20250611090107.t35zatn47vetnvse@skbuf> (raw)
In-Reply-To: <aEhVsrEk0qv+38r3@lizhi-Precision-Tower-5810>
On Tue, Jun 10, 2025 at 11:56:34AM -0400, Frank Li wrote:
> Can you add performance beneafit information after use non-coherent memory
> in commit message to let reviewer easily know your intention.
To expand on that, you can post the output of something like this
(before and after):
$ spidev_test --device /dev/spidev1.0 --bpw 8 --size 256 --cpha --iter 10000000 --speed 10000000
where /dev/spidev1.0 is an unconnected chip select with a dummy entry in
the device tree.
next prev parent reply other threads:[~2025-06-11 9:01 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-09 15:32 [PATCH 0/4] spi: spi-fsl-dspi: Target mode improvements James Clark
2025-06-09 15:32 ` [PATCH 1/4] spi: spi-fsl-dspi: Clear completion counter before initiating transfer James Clark
2025-06-10 11:34 ` Vladimir Oltean
2025-06-10 15:41 ` James Clark
2025-06-10 21:01 ` Vladimir Oltean
2025-06-10 21:31 ` Vladimir Oltean
2025-06-11 9:12 ` James Clark
2025-06-09 15:32 ` [PATCH 2/4] spi: spi-fsl-dspi: Use non-coherent memory for DMA James Clark
2025-06-10 8:26 ` Arnd Bergmann
2025-06-10 9:03 ` James Clark
2025-06-10 15:15 ` Frank Li
2025-06-10 15:46 ` James Clark
2025-06-13 15:56 ` David Laight
2025-06-10 15:48 ` Arnd Bergmann
2025-06-10 15:56 ` Frank Li
2025-06-11 9:01 ` Vladimir Oltean [this message]
2025-06-12 11:05 ` James Clark
2025-06-12 11:15 ` Vladimir Oltean
2025-06-12 14:14 ` James Clark
2025-06-12 14:23 ` Vladimir Oltean
2025-06-12 14:28 ` James Clark
2025-06-12 14:31 ` Vladimir Oltean
2025-06-12 14:35 ` James Clark
2025-06-12 14:36 ` Vladimir Oltean
2025-06-12 15:36 ` James Clark
2025-06-12 15:37 ` James Clark
2025-06-12 14:43 ` Mark Brown
2025-06-12 15:47 ` James Clark
2025-06-12 15:51 ` Vladimir Oltean
2025-06-12 15:40 ` Arnd Bergmann
2025-06-12 11:15 ` Arnd Bergmann
2025-06-09 15:32 ` [PATCH 3/4] spi: spi-fsl-dspi: Increase DMA buffer size James Clark
2025-06-09 15:32 ` [PATCH 4/4] spi: spi-fsl-dspi: Report FIFO overflows as errors James Clark
2025-06-10 21:52 ` Vladimir Oltean
2025-06-11 14:40 ` James Clark
2025-06-11 14:56 ` Vladimir Oltean
2025-06-11 15:00 ` James Clark
2025-06-30 11:40 ` [PATCH 0/4] spi: spi-fsl-dspi: Target mode improvements Mark Brown
2025-06-30 12:23 ` James Clark
2025-06-30 12:25 ` Mark Brown
2025-06-30 12:36 ` James Clark
2025-06-30 12:40 ` Mark Brown
2025-06-30 12:54 ` James Clark
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