linux-kernel - [PATCH v4 0/3] pinctrl: Adding support for Microchip/Microsemi serial GPIO controller

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Message-ID: <20201007111145.2306213-1-lars.povlsen@microchip.com>
Date:   Wed, 7 Oct 2020 13:11:42 +0200
From:   Lars Povlsen <lars.povlsen@...rochip.com>
To:     Linus Walleij <linus.walleij@...aro.org>
CC:     Lars Povlsen <lars.povlsen@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        <devicetree@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH v4 0/3] pinctrl: Adding support for Microchip/Microsemi serial GPIO controller

The series add support for the serial GPIO controller used by
Microchip Sparx5, as well as (MSCC) ocelot/jaguar2 SoCs.

The driver now register two separate banks (per instance), one for
input pins (the first) and one for output direction. This eliminates
the need for specifying the direction as part of the gpio
arguments. The (fixed) direction is thus inherent from the gpio
handle.

v4 changes (binding comments from Rob):
- microchip,sgpio-port-ranges changed to uint32-matrix so tuples can
  be represented properly.
- gpio controller node name changed to "gpio@[0-1]"
- whitespace fixes
- DT files updated as per schema changes

v3 changes:
- Renamed all usage of "mchp" abbrevation with "microchip".
- Split the in/output directions into (two) separate banks.
- Eliminated the bindings include file (from above)
- Changed SPDX license to "GPL-2.0-or-later"
- Change -ENOTSUPP to -EOPNOTSUPP
- Minor type/symbol naming changes

v2 changes:
- Adds both in and output modes.
- Use direct adressing of the individual banks (#gpio-cells = <4>),
  also osoleting need for addressing macros in bindings include file.
- Property 'microchip,sgpio-ports' (uint32, bitmask) replaced by
  proper range set (array of [start,end]) 'microchip,sgpio-port-ranges'.
- Fixes whitespace issues in Kconfig file

Lars Povlsen (3):
  dt-bindings: pinctrl: Add bindings for pinctrl-mchp-sgpio driver
  pinctrl: pinctrl-mchp-sgpio: Add pinctrl driver for Microsemi Serial
    GPIO
  arm64: dts: sparx5: Add SGPIO devices

 .../pinctrl/microchip,sparx5-sgpio.yaml       | 140 ++++
 MAINTAINERS                                   |   1 +
 arch/arm64/boot/dts/microchip/sparx5.dtsi     |  91 +++
 .../boot/dts/microchip/sparx5_pcb125.dts      |   5 +
 .../dts/microchip/sparx5_pcb134_board.dtsi    | 258 +++++++
 .../dts/microchip/sparx5_pcb135_board.dtsi    |  55 ++
 drivers/pinctrl/Kconfig                       |  18 +
 drivers/pinctrl/Makefile                      |   1 +
 drivers/pinctrl/pinctrl-microchip-sgpio.c     | 676 ++++++++++++++++++
 9 files changed, 1245 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/microchip,sparx5-sgpio.yaml
 create mode 100644 drivers/pinctrl/pinctrl-microchip-sgpio.c

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2.25.1