| From: |
| Chia-Wei Wang <chiawei_wang-AT-aspeedtech.com> |
| To: |
| <robh+dt-AT-kernel.org>, <joel-AT-jms.id.au>, <andrew-AT-aj.id.au>, <jk-AT-codeconstruct.com.au>, <a.kartashev-AT-yadro.com>, <patrick.rudolph-AT-9elements.com>, <dphadke-AT-linux.microsoft.com>, <linux-aspeed-AT-lists.ozlabs.org>, <openbmc-AT-lists.ozlabs.org>, <devicetree-AT-vger.kernel.org>, <linux-arm-kernel-AT-lists.infradead.org>, <linux-kernel-AT-vger.kernel.org> |
| Subject: |
| [PATCH v5 0/4] arm: aspeed: Add eSPI support |
| Date: |
| Mon, 16 May 2022 08:54:08 +0800 |
| Message-ID: |
| <20220516005412.4844-1-chiawei_wang@aspeedtech.com> |
| Cc: |
| <ryan_chen-AT-aspeedtech.com> |
| Archive-link: |
| Article |
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.
v5:
- unconditionally set VW GPIO to software mode as suggested by Jeremy
- add missing DTS node for Aspeed G5 SoCs
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-g5.dtsi | 17 +
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 | 309 ++++++++++
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 | 142 +++++
drivers/soc/aspeed/aspeed-espi-vw.h | 21 +
17 files changed, 2683 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
--
2.25.1
