LiteX SoC controller and LiteUART serial driver

From:		Mateusz Holenko <mholenko-AT-antmicro.com>
To:		Rob Herring <robh+dt-AT-kernel.org>, Mark Rutland <mark.rutland-AT-arm.com>, Greg Kroah-Hartman <gregkh-AT-linuxfoundation.org>, Jiri Slaby <jslaby-AT-suse.com>, devicetree-AT-vger.kernel.org, linux-serial-AT-vger.kernel.org
Subject:		[PATCH v10 0/5] LiteX SoC controller and LiteUART serial driver
Date:		Wed, 12 Aug 2020 14:33:46 +0200
Message-ID:		<20200812143324.2394375-0-mholenko@antmicro.com>
Cc:		Stafford Horne <shorne-AT-gmail.com>, Karol Gugala <kgugala-AT-antmicro.com>, Mateusz Holenko <mholenko-AT-antmicro.com>, Mauro Carvalho Chehab <mchehab+samsung-AT-kernel.org>, "David S. Miller" <davem-AT-davemloft.net>, "Paul E. McKenney" <paulmck-AT-linux.ibm.com>, Filip Kokosinski <fkokosinski-AT-antmicro.com>, Pawel Czarnecki <pczarnecki-AT-internships.antmicro.com>, Joel Stanley <joel-AT-jms.id.au>, Jonathan Cameron <Jonathan.Cameron-AT-huawei.com>, Maxime Ripard <mripard-AT-kernel.org>, Shawn Guo <shawnguo-AT-kernel.org>, Heiko Stuebner <heiko-AT-sntech.de>, Sam Ravnborg <sam-AT-ravnborg.org>, Icenowy Zheng <icenowy-AT-aosc.io>, Laurent Pinchart <laurent.pinchart-AT-ideasonboard.com>, linux-kernel-AT-vger.kernel.org, "Gabriel L. Somlo" <gsomlo-AT-gmail.com>
Archive-link:		Article

This patchset introduces support for LiteX SoC Controller
and LiteUART - serial device from LiteX SoC builder
(https://github.com/enjoy-digital/litex).

In the following patchset I will add
a new mor1kx-based (OpenRISC) platform that
uses this device.

Later I plan to extend this platform by
adding support for more devices from LiteX suite.

Changes in v10:
    - added casting to avoid sparse warnings in the SoC Controller's driver

Changes in v9:
    - fixed the `reg` node notation in the DT example
    - added exporting of the `litex_set_reg`/`litex_get_reg` symbols

Changes in v8:
    - fixed help messages in LiteUART's KConfig
    - removed dependency between LiteUART and LiteX SoC drivers
    - removed `litex_check_accessors()` helper function
    - added crashing (BUG) on the failed LiteX CSR access test

Changes in v7:
    - added missing include directive in UART's driver

Changes in v6:
    - changed accessors in SoC Controller's driver
    - reworked UART driver

Changes in v5:
    - added Reviewed-by tag
    - removed custom accessors from SoC Controller's driver
    - fixed error checking in SoC Controller's driver

Changes in v4:
    - fixed copyright headers
    - fixed SoC Controller's yaml 
    - simplified SoC Controller's driver

Changes in v3:
    - added Acked-by and Reviewed-by tags
    - introduced LiteX SoC Controller driver
    - removed endianness detection (handled now by LiteX SoC Controller driver)
    - modified litex.h header
    - DTS aliases for LiteUART made optional
    - renamed SERIAL_LITEUART_NR_PORTS to SERIAL_LITEUART_MAX_PORTS
    - changed PORT_LITEUART from 122 to 123

Changes in v2:
    - binding description rewritten to a yaml schema file
    - added litex.h header with common register access functions

Filip Kokosinski (3):
  dt-bindings: vendor: add vendor prefix for LiteX
  dt-bindings: serial: document LiteUART bindings
  drivers/tty/serial: add LiteUART driver

Pawel Czarnecki (2):
  dt-bindings: soc: document LiteX SoC Controller bindings
  drivers/soc/litex: add LiteX SoC Controller driver

 .../bindings/serial/litex,liteuart.yaml       |  38 ++
 .../soc/litex/litex,soc-controller.yaml       |  39 ++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 MAINTAINERS                                   |   9 +
 drivers/soc/Kconfig                           |   1 +
 drivers/soc/Makefile                          |   1 +
 drivers/soc/litex/Kconfig                     |  15 +
 drivers/soc/litex/Makefile                    |   3 +
 drivers/soc/litex/litex_soc_ctrl.c            | 194 +++++++++
 drivers/tty/serial/Kconfig                    |  32 ++
 drivers/tty/serial/Makefile                   |   1 +
 drivers/tty/serial/liteuart.c                 | 402 ++++++++++++++++++
 include/linux/litex.h                         |  24 ++
 13 files changed, 761 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/serial/litex,liteuart.yaml
 create mode 100644 Documentation/devicetree/bindings/soc/litex/litex,soc-controller.yaml
 create mode 100644 drivers/soc/litex/Kconfig
 create mode 100644 drivers/soc/litex/Makefile
 create mode 100644 drivers/soc/litex/litex_soc_ctrl.c
 create mode 100644 drivers/tty/serial/liteuart.c
 create mode 100644 include/linux/litex.h

-- 
2.25.1