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From: Piyush Mehta <piyush.mehta@xilinx.com>
To: <arnd@arndb.de>, <zou_wei@huawei.com>,
	<gregkh@linuxfoundation.org>, <linus.walleij@linaro.org>,
	<michal.simek@xilinx.com>, <wendy.liang@xilinx.com>,
	<iwamatsu@nigauri.org>, <bgolaszewski@baylibre.com>,
	<robh+dt@kernel.org>, <rajan.vaja@xilinx.com>
Cc: <linux-gpio@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<git@xilinx.com>, <sgoud@xilinx.com>,
	<linux-arm-kernel@lists.infradead.org>,
	 <linux-kernel@vger.kernel.org>,
	Piyush Mehta <piyush.mehta@xilinx.com>
Subject: [PATCH V2 0/3] gpio: modepin: Add driver support for modepin GPIO controller
Date: Thu, 5 Aug 2021 23:12:16 +0530	[thread overview]
Message-ID: <20210805174219.3000667-1-piyush.mehta@xilinx.com> (raw)

This patch adds support for the zynqmp modepin GPIO controller and
documented for the same. GPIO modepin driver set and get the value and
status of the PS_MODE pin, based on device-tree pin configuration.
These four-bits boot-mode pins are dedicated configurable as input/output.
After the stabilization of the system,these mode pins are sampled.

To access GPIO pins, added Xilinx ZynqMP firmware MDIO API support to
set and get PS_MODE pins value and status. These APIs are interface
APIs, between the mode pin controller driver and low-level API.

---
Changes in v2:
- Added Xilinx ZynqMP firmware MMIO API support to set and get pin
  value and status.
- DT Documentation- Addressed review comments: Update commit message
- Modepin driver- Addressed review comments:
  - Update APIs
  - Removed unwanted variables
  - Handle return path for probe function

Review Comments:
https://lore.kernel.org/linux-arm-kernel/20210624205055.GA1961487@robh.at.kernel.org/T/#u
---

Piyush Mehta (3):
  firmware: zynqmp: Add MMIO read and write support for PS_MODE pin
  dt-bindings: gpio: zynqmp: Add binding documentation for modepin
  gpio: modepin: Add driver support for modepin GPIO controller

 .../bindings/gpio/xlnx,zynqmp-gpio-modepin.yaml    |  41 ++++++
 drivers/firmware/xilinx/zynqmp.c                   |  46 ++++++
 drivers/gpio/Kconfig                               |  12 ++
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-zynqmp-modepin.c                 | 158 +++++++++++++++++++++
 include/linux/firmware/xlnx-zynqmp.h               |  14 ++
 6 files changed, 272 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/xlnx,zynqmp-gpio-modepin.yaml
 create mode 100644 drivers/gpio/gpio-zynqmp-modepin.c

-- 
2.7.4


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             reply	other threads:[~2021-08-05 17:44 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05 17:42 Piyush Mehta [this message]
2021-08-05 17:42 ` [PATCH V2 1/3] firmware: zynqmp: Add MMIO read and write support for PS_MODE pin Piyush Mehta
2021-08-06  5:49   ` Michal Simek
2021-08-11 13:08   ` Linus Walleij
2021-08-11 13:46     ` Arnd Bergmann
2021-08-11 14:04       ` Michal Simek
2021-08-11 15:14   ` Linus Walleij
2021-08-05 17:42 ` [PATCH V2 2/3] dt-bindings: gpio: zynqmp: Add binding documentation for modepin Piyush Mehta
2021-08-13 19:01   ` Rob Herring
2021-08-16  6:27     ` Michal Simek
2021-08-05 17:42 ` [PATCH V2 3/3] gpio: modepin: Add driver support for modepin GPIO controller Piyush Mehta
2021-08-11 12:59   ` Linus Walleij
2021-08-11 13:29     ` Michal Simek
2021-08-11 14:45       ` Linus Walleij
2021-08-11 15:12   ` Linus Walleij

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