linux-kernel - [PATCH v2 0/5] Add SPI Driver to HPE GXP Architecture

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Message-Id: <20220722172335.33404-1-nick.hawkins@hpe.com>
Date:   Fri, 22 Jul 2022 12:23:30 -0500
From:   nick.hawkins@....com
To:     nick.hawkins@....com
Cc:     broonie@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, verdun@....com,
        linux@...linux.org.uk, linux-spi@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, arnd@...db.de, joel@....id.au
Subject: [PATCH v2 0/5] Add SPI Driver to HPE GXP Architecture

From: Nick Hawkins <nick.hawkins@....com>

Changes since v2:
 *Changed the CONFIG_SPI_GXP from y to m in defconfig
 *Removed extra space around < > for reg in hpe,gxp-spifi.yaml
 *Changed interrupt-parrent to interrupt-parent in hpe,gxp-spifi.yaml
 *Removed repeated include file in spi-gxp.c
 *Removed unnecessary initialization of ret variable in spi-gxp.c
 *Removed conditional variable checks where failure is not possible in
  spi-gxp.c
 *Removed unecessary variable cs in spi-gxp.c
 *Removed blank gxp-spifi-remove function in spi-gxp.c
 *Fixed error messages so they are not repetitive

The GXP supports 3 separate SPI interfaces to accommodate the system
flash, core flash, and other functions. The SPI engine supports variable
clock frequency, selectable 3-byte or 4-byte addressing and a
configurable x1, x2, and x4 command/address/data modes. The memory
buffer for reading and writing ranges between 256 bytes and 8KB. This
driver supports access to the core flash and bios part.

Nick Hawkins (5):
  spi: spi-gxp: Add support for HPE GXP SoCs
  spi: dt-bindings: add documentation for hpe,gxp-spifi
  ARM: dts: hpe: Add spi driver node
  ARM: configs: multi_v7_defconfig: Enable HPE GXP SPI driver
  MAINTAINERS: add spi support to GXP

 .../bindings/spi/hpe,gxp-spifi.yaml           |  56 +++
 MAINTAINERS                                   |   2 +
 arch/arm/boot/dts/hpe-bmc-dl360gen10.dts      |  58 ++++
 arch/arm/boot/dts/hpe-gxp.dtsi                |  21 +-
 arch/arm/configs/multi_v7_defconfig           |   1 +
 drivers/spi/Kconfig                           |   7 +
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-gxp.c                         | 325 ++++++++++++++++++
 8 files changed, 470 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/spi/hpe,gxp-spifi.yaml
 create mode 100644 drivers/spi/spi-gxp.c

-- 
2.17.1