linux-kernel - [PATCH v2 0/3] Add support for Microchip CoreSPI Controller

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Message-ID: <20251105152823.730422-1-prajna.rajendrakumar@microchip.com>
Date: Wed, 5 Nov 2025 15:28:20 +0000
From: Prajna Rajendra Kumar <prajna.rajendrakumar@...rochip.com>
To: Mark Brown <broonie@...nel.org>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	<linux-riscv@...ts.infradead.org>, <linux-spi@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>, Conor Dooley
	<conor.dooley@...rochip.com>, Daire McNamara <daire.mcnamara@...rochip.com>,
	Valentina Fernandez Alanis <valentina.fernandezalanis@...rochip.com>, "Cyril
 Jean" <cyril.jean@...rochip.com>, Prajna Rajendra Kumar
	<prajna.rajendrakumar@...rochip.com>
Subject: [PATCH v2 0/3] Add support for Microchip CoreSPI Controller

This patch series adds support for the Microchip FPGA CoreSPI "soft" IP 
and documents its device tree bindings.

As preparation, the existing Microchip SPI driver is renamed to clearly
indicate that it supports only the Microchip PolarFire SoC "hard" controller.
Although it was originally named with the expectation that it might also
cover the FPGA CoreSPI "soft" IP, the register layouts differ significantly, 
so separate drivers are required.

changes in v2
--------------
- Moved compatible strings into an enum and kept alphabetical order
- Replaced .remove_new callback with .remove
- Dropped unused variable reported by kernel test robot 
- Updated CoreSPI drivers commit message to include the 8-bit frame size restriction

Prajna Rajendra Kumar (3):
  spi: microchip: rename driver file and internal identifiers
  spi: dt-binding: document Microchip CoreSPI
  spi: add support for microchip "soft" spi controller

 .../bindings/spi/microchip,mpfs-spi.yaml      |  70 +-
 drivers/spi/Kconfig                           |  12 +-
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-microchip-core.c              | 581 ++++++----------
 drivers/spi/spi-mpfs.c                        | 626 ++++++++++++++++++
 5 files changed, 905 insertions(+), 385 deletions(-)
 create mode 100644 drivers/spi/spi-mpfs.c

-- 
2.25.1