linux-kernel - [PATCH 0/4] spi: spi-fsl-dspi: Target mode improvements

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Message-Id: <20250609-james-nxp-spi-dma-v1-0-2b831e714be2@linaro.org>
Date: Mon, 09 Jun 2025 16:32:37 +0100
From: James Clark <james.clark@...aro.org>
To: Vladimir Oltean <olteanv@...il.com>, Mark Brown <broonie@...nel.org>
Cc: Vladimir Oltean <vladimir.oltean@....com>, linux-spi@...r.kernel.org, 
 imx@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 James Clark <james.clark@...aro.org>, Arnd Bergmann <arnd@...db.de>, 
 Larisa Grigore <larisa.grigore@....com>
Subject: [PATCH 0/4] spi: spi-fsl-dspi: Target mode improvements

Improve usability of target mode by reporting FIFO errors and increasing
the buffer size when DMA is used. While we're touching DMA stuff also
switch to non-coherent memory, although this is unrelated to target
mode.

The first commit is marked as a fix because it can fix intermittent
issues with existing transfers, rather than the later fixes which
improve larger than FIFO target mode transfers which would have never
worked.

Signed-off-by: James Clark <james.clark@...aro.org>
---
James Clark (3):
      spi: spi-fsl-dspi: Clear completion counter before initiating transfer
      spi: spi-fsl-dspi: Use non-coherent memory for DMA
      spi: spi-fsl-dspi: Report FIFO overflows as errors

Larisa Grigore (1):
      spi: spi-fsl-dspi: Increase DMA buffer size

 drivers/spi/spi-fsl-dspi.c | 128 ++++++++++++++++++++++++++++++++++++---------
 1 file changed, 102 insertions(+), 26 deletions(-)
---
base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494
change-id: 20250522-james-nxp-spi-dma-a997ebebfb6b

Best regards,
-- 
James Clark <james.clark@...aro.org>