[PATCH v4 0/5] Add SPI Driver to HPE GXP Architecture

nick.hawkins
2022-07-25T20:14:05Z

Changes since v4:
*Removed unnecessary quotes in hpe,gxp-spifi.yaml

Changes since v3:
*Fixed indentations in hpe,gxp-spifi.yaml

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 unnecessary 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