linux-kernel - [PATCH v1 0/9] ARM: Add GPIO and PSU Support

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Message-Id: <20230418152824.110823-1-nick.hawkins@hpe.com>
Date:   Tue, 18 Apr 2023 10:28:15 -0500
From:   nick.hawkins@....com
To:     verdun@....com, nick.hawkins@....com, linus.walleij@...aro.org,
        brgl@...ev.pl, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, jdelvare@...e.com,
        linux@...ck-us.net, linux@...linux.org.uk,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v1 0/9] ARM: Add GPIO and PSU Support

From: Nick Hawkins <nick.hawkins@....com>

The GXP has multiple interfaces that provide I/O to it. There is GPIO
coming from the host and from the cpld. Both of these interfaces are
interruptable.

The GXP is able to monitor PSU's via I2C. There is support for up to 8
PSUs. The GXP gets presence information from I/O with the cpld.

The fan controller and the psu monitor consume I/O from the CPLD.
Thus for the GXP to be able to report this GPIO to the OpenBMC stack
calls have been enabled for the GPIO driver to use.

Nick Hawkins (9):
  gpio: gxp: Add HPE GXP GPIO
  hwmon: (gxp_fan_ctrl) Give GPIO access to fan data
  hwmon: (gxp-psu) Add driver to read HPE PSUs
  dt-bindings: hwmon: Modify hpe,gxp-fan-ctrl
  dt-bindings: gpio: Add HPE GXP GPIO
  dt-bindings: hwmon: Add HPE GXP PSU Support
  ARM: dts: gxp: add psu, i2c, gpio
  ARM: multi_v7_defconfig: Add PSU, GPIO, and I2C
  MAINTAINERS: hpe: Add GPIO, PSU

 .../bindings/gpio/hpe,gxp-gpio.yaml           |  137 +++
 .../bindings/hwmon/hpe,gxp-fan-ctrl.yaml      |    6 +-
 .../bindings/hwmon/hpe,gxp-psu.yaml           |   45 +
 MAINTAINERS                                   |    4 +
 arch/arm/boot/dts/hpe-bmc-dl360gen10.dts      |  161 +++
 arch/arm/boot/dts/hpe-gxp.dtsi                |  197 ++-
 arch/arm/configs/multi_v7_defconfig           |    5 +-
 drivers/gpio/Kconfig                          |    9 +
 drivers/gpio/Makefile                         |    1 +
 drivers/gpio/gpio-gxp.c                       | 1056 +++++++++++++++++
 drivers/hwmon/Kconfig                         |   10 +
 drivers/hwmon/Makefile                        |    1 +
 drivers/hwmon/gxp-fan-ctrl.c                  |   58 +-
 drivers/hwmon/gxp-psu.c                       |  773 ++++++++++++
 14 files changed, 2404 insertions(+), 59 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml
 create mode 100644 Documentation/devicetree/bindings/hwmon/hpe,gxp-psu.yaml
 create mode 100644 drivers/gpio/gpio-gxp.c
 create mode 100644 drivers/hwmon/gxp-psu.c

-- 
2.17.1