[PATCH v4 0/4] arm: aspeed: Add eSPI support

From: Chia-Wei Wang
Date: Tue Aug 31 2021 - 23:30:51 EST


This patch series add the driver support for the eSPI controller
of Aspeed 5/6th generation SoCs. This controller is a slave device
communicating with a master over Enhanced Serial Peripheral Interface (eSPI).
It supports all of the 4 eSPI channels, namely peripheral, virtual wire,
out-of-band, and flash, and operates at max frequency of 66MHz.

v4:
- fix dt-bindgins error with patternProperties
- fix data type warning for ARM64 compilation
- replace header based implementation with .c files
- add more description for the ioctl interface

v3:
- remove the redundant patch "clk: aspeed: Add eSPI reset bit"
- fix missing header inclusion reported by test bot
- fix dt-bindings error reported by yamllint

v2:
- remove irqchip implementation
- merge per-channel drivers into single one to avoid the racing issue
among eSPI handshake process and driver probing.

Chia-Wei Wang (4):
dt-bindings: aspeed: Add eSPI controller
MAINTAINER: Add ASPEED eSPI driver entry
soc: aspeed: Add eSPI driver
ARM: dts: aspeed: Add eSPI node

.../devicetree/bindings/soc/aspeed/espi.yaml | 162 +++++
MAINTAINERS | 9 +
arch/arm/boot/dts/aspeed-g6.dtsi | 17 +
drivers/soc/aspeed/Kconfig | 11 +
drivers/soc/aspeed/Makefile | 5 +
drivers/soc/aspeed/aspeed-espi-ctrl.c | 214 +++++++
drivers/soc/aspeed/aspeed-espi-ctrl.h | 308 ++++++++++
drivers/soc/aspeed/aspeed-espi-flash.c | 352 +++++++++++
drivers/soc/aspeed/aspeed-espi-flash.h | 45 ++
drivers/soc/aspeed/aspeed-espi-ioc.h | 195 ++++++
drivers/soc/aspeed/aspeed-espi-oob.c | 558 ++++++++++++++++++
drivers/soc/aspeed/aspeed-espi-oob.h | 70 +++
drivers/soc/aspeed/aspeed-espi-perif.c | 511 ++++++++++++++++
drivers/soc/aspeed/aspeed-espi-perif.h | 45 ++
drivers/soc/aspeed/aspeed-espi-vw.c | 137 +++++
drivers/soc/aspeed/aspeed-espi-vw.h | 21 +
16 files changed, 2660 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/aspeed/espi.yaml
create mode 100644 drivers/soc/aspeed/aspeed-espi-ctrl.c
create mode 100644 drivers/soc/aspeed/aspeed-espi-ctrl.h
create mode 100644 drivers/soc/aspeed/aspeed-espi-flash.c
create mode 100644 drivers/soc/aspeed/aspeed-espi-flash.h
create mode 100644 drivers/soc/aspeed/aspeed-espi-ioc.h
create mode 100644 drivers/soc/aspeed/aspeed-espi-oob.c
create mode 100644 drivers/soc/aspeed/aspeed-espi-oob.h
create mode 100644 drivers/soc/aspeed/aspeed-espi-perif.c
create mode 100644 drivers/soc/aspeed/aspeed-espi-perif.h
create mode 100644 drivers/soc/aspeed/aspeed-espi-vw.c
create mode 100644 drivers/soc/aspeed/aspeed-espi-vw.h

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2.17.1