linux-kernel - [PATCH v2 00/14] spi: spi-fsl-dspi: DSPI support for NXP S32G platforms

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Message-Id: <20250522-james-nxp-spi-v2-0-bea884630cfb@linaro.org>
Date: Thu, 22 May 2025 15:51:29 +0100
From: James Clark <james.clark@...aro.org>
To: Vladimir Oltean <olteanv@...il.com>, Mark Brown <broonie@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Matti Vaittinen <mazziesaccount@...il.com>
Cc: Conor Dooley <conor+dt@...nel.org>, Frank Li <Frank.Li@....com>, 
 Chester Lin <chester62515@...il.com>, Matthias Brugger <mbrugger@...e.com>, 
 Ghennadi Procopciuc <ghennadi.procopciuc@....nxp.com>, 
 NXP S32 Linux Team <s32@....com>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Chao Fu <B44548@...escale.com>, 
 Xiubo Li <Li.Xiubo@...escale.com>, Lukasz Majewski <lukma@...x.de>, 
 linux-spi@...r.kernel.org, imx@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Vladimir Oltean <vladimir.oltean@....com>, 
 Dan Carpenter <dan.carpenter@...aro.org>, 
 Larisa Grigore <larisa.grigore@....com>, 
 Xulin Sun <xulin.sun@...driver.com>, James Clark <james.clark@...aro.org>, 
 Bogdan-Gabriel Roman <bogdan-gabriel.roman@....com>, 
 Marius Trifu <marius.trifu@....com>, 
 Ciprian Marian Costea <ciprianmarian.costea@....com>, 
 Andra-Teodora Ilie <andra.ilie@....com>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Stoica Cosmin-Stefan <cosmin.stoica@....com>, Dan Nica <dan.nica@....com>, 
 Larisa Grigore <Larisa.Grigore@....com>, 
 Stefan-Gabriel Mirea <stefan-gabriel.mirea@....com>, 
 "Radu Pirea (NXP OSS)" <radu-nicolae.pirea@....nxp.com>
Subject: [PATCH v2 00/14] spi: spi-fsl-dspi: DSPI support for NXP S32G
 platforms

DT and driver changes for DSPI on S32G platforms. First 3 commits are
fixes for various edge cases which also apply to other platforms.
Remaining commits add new S32G registers and device settings, some S32G
specific fixes and then finally add the DT compatibles and binding docs.

Tested in both host and target mode on S32G-VNP-RDB3 by transferring to
an external device over spi1 using spidev_test.c

---
Changes in v2:
- Add trailing commas to lists
- Line length fixes
- DT coding style changes
- Remove fake "rohm,dh2228fv" device for testing
- Improve some commit messages
- Put all fixes commits first and add fixes: tags
- Link to v1: https://lore.kernel.org/r/20250509-james-nxp-spi-v1-0-32bfcd2fea11@linaro.org

---
Andra-Teodora Ilie (1):
      spi: spi-fsl-dspi: Enable modified transfer protocol on S32G

Bogdan-Gabriel Roman (1):
      spi: spi-fsl-dspi: Halt the module after a new message transfer

Ciprian Marian Costea (2):
      dt-bindings: spi: dspi: Add S32G support
      spi: spi-fsl-dspi: Enable support for S32G platforms

James Clark (2):
      spi: spi-fsl-dspi: Re-use one volatile regmap for both device types
      spi: spi-fsl-dspi: Define regmaps per device

Larisa Grigore (7):
      spi: spi-fsl-dspi: restrict register range for regmap access
      spi: spi-fsl-dspi: Reset SR flags before sending a new message
      spi: spi-fsl-dspi: Add config and regmaps for S32G platforms
      spi: spi-fsl-dspi: Avoid setup_accel logic for DMA transfers
      spi: spi-fsl-dspi: Use DMA for S32G controller in target mode
      spi: spi-fsl-dspi: Reinitialize DSPI regs after resuming for S32G
      arm64: dts: Add DSPI entries for S32G platforms

Marius Trifu (1):
      spi: spi-fsl-dspi: Use spi_alloc_target for target

 .../devicetree/bindings/spi/fsl,dspi.yaml          |  18 +
 arch/arm64/boot/dts/freescale/s32g2.dtsi           |  78 +++++
 arch/arm64/boot/dts/freescale/s32g3.dtsi           |  78 +++++
 arch/arm64/boot/dts/freescale/s32gxxxa-evb.dtsi    |  83 +++++
 arch/arm64/boot/dts/freescale/s32gxxxa-rdb.dtsi    |  83 +++++
 drivers/spi/Kconfig                                |   4 +-
 drivers/spi/spi-fsl-dspi.c                         | 362 +++++++++++++++------
 7 files changed, 600 insertions(+), 106 deletions(-)
---
base-commit: d608703fcdd9e9538f6c7a0fcf98bf79b1375b60
change-id: 20250325-james-nxp-spi-caf1e2099231

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