linux-kernel - [PATCH v2 0/9] spi: spi-fsl-lpspi: Generic fixes and support for S32G devices

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Message-Id: <20250828-james-nxp-lpspi-v2-0-6262b9aa9be4@linaro.org>
Date: Thu, 28 Aug 2025 11:14:39 +0100
From: James Clark <james.clark@...aro.org>
To: Frank Li <Frank.Li@....com>, Mark Brown <broonie@...nel.org>, 
 Clark Wang <xiaoning.wang@....com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, Fabio Estevam <festevam@...il.com>, 
 Larisa Grigore <larisa.grigore@....nxp.com>, 
 Larisa Grigore <larisa.grigore@....com>, 
 Ghennadi Procopciuc <ghennadi.procopciuc@....com>, 
 Ciprianmarian Costea <ciprianmarian.costea@....com>, s32@....com
Cc: James Clark <james.clark@...aro.org>, linux-spi@...r.kernel.org, 
 imx@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org
Subject: [PATCH v2 0/9] spi: spi-fsl-lpspi: Generic fixes and support for
 S32G devices

Various fixes for LPSI along with some refactorings. None of the fixes
are strictly related to S32G, however these changes all originate from
the work to support S32G devices. The only commits that are strictly
related are for the new s32g2 and s32g3 compatible strings.

Signed-off-by: James Clark <james.clark@...aro.org>
---
To: Frank Li <Frank.Li@....com>
To: Mark Brown <broonie@...nel.org>
To: Clark Wang <xiaoning.wang@....com>
To: Rob Herring <robh@...nel.org>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>
To: Conor Dooley <conor+dt@...nel.org>
To: Shawn Guo <shawnguo@...nel.org>
To: Sascha Hauer <s.hauer@...gutronix.de>
To: Fabio Estevam <festevam@...il.com>
To: Larisa Grigore <larisa.grigore@....nxp.com>
To: Larisa Grigore <larisa.grigore@....com>
To: Ghennadi Procopciuc <ghennadi.procopciuc@....com>
To: Ciprianmarian Costea <ciprianmarian.costea@....com>
To: s32@....com
Cc: linux-spi@...r.kernel.org
Cc: imx@...ts.linux.dev
Cc: linux-kernel@...r.kernel.org
Cc: devicetree@...r.kernel.org

---
Changes in v2:
- Drop changes to be able to swap input/output pins. It's not required
  for generic S32G support and we don't know what board it's for.
- Drop binding change for max num_cs value. Although the maximum is 3,
  this would be autodetected so it should be left blank. 2 is the max
  that is required to set manually.
- Fix missing bitfield header for some compile targets
- Keep prescale_max as a numeric value, but treat 0 as no limit
- Put compatible string dt-bindings patch before driver change
- Link to v1: https://lore.kernel.org/r/20250814-james-nxp-lpspi-v1-0-9586d7815d14@linaro.org

---
James Clark (3):
      spi: spi-fsl-lpspi: Constify devtype datas
      spi: spi-fsl-lpspi: Treat prescale_max == 0 as no erratum
      spi: spi-fsl-lpspi: Parameterize reading num-cs from hardware

Larisa Grigore (6):
      spi: spi-fsl-lpspi: Fix transmissions when using CONT
      spi: spi-fsl-lpspi: Set correct chip-select polarity bit
      spi: spi-fsl-lpspi: Reset FIFO and disable module on transfer abort
      spi: spi-fsl-lpspi: Clear status register after disabling the module
      dt-bindings: lpspi: Document support for S32G
      spi: spi-fsl-lpspi: Add compatible for S32G

 .../devicetree/bindings/spi/spi-fsl-lpspi.yaml     |  5 +++
 drivers/spi/spi-fsl-lpspi.c                        | 47 +++++++++++++---------
 2 files changed, 33 insertions(+), 19 deletions(-)
---
base-commit: 07d9df80082b8d1f37e05658371b087cb6738770
change-id: 20250715-james-nxp-lpspi-1fac58e72a59

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