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 V4 0/3] gpio: modepin: Add driver support for modepin GPIO controller
Date: Wed, 22 Sep 2021 19:23:16 +0530 [thread overview]
Message-ID: <20210922135319.3128153-1-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
Changes in v3:
- Update example in dt-bindings documentation
- Update probe function return value
- Remove unnecessary print and header file
Review Comments:
https://lore.kernel.org/linux-arm-kernel/20210805174219.3000667-1-piyush.mehta@xilinx.com/#t
Changes in v4:
- Added input pin read status in modepin_gpio_get_value.
- Updated modepin control bit for out configuration.
Review Comments:
https://lore.kernel.org/linux-arm-kernel/554508f5-8cb5-3840-9f61-f6cd6e5745d2@xilinx.com/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 | 43 ++++++
drivers/firmware/xilinx/zynqmp.c | 46 ++++++
drivers/gpio/Kconfig | 12 ++
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-zynqmp-modepin.c | 162 +++++++++++++++++++++
include/linux/firmware/xlnx-zynqmp.h | 14 ++
6 files changed, 278 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
next reply other threads:[~2021-09-22 13:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 13:53 Piyush Mehta [this message]
2021-09-22 13:53 ` [PATCH V4 1/3] firmware: zynqmp: Add MMIO read and write support for PS_MODE pin Piyush Mehta
2021-09-22 13:53 ` [PATCH V4 2/3] dt-bindings: gpio: zynqmp: Add binding documentation for modepin Piyush Mehta
2021-09-22 13:53 ` [PATCH V4 3/3] gpio: modepin: Add driver support for modepin GPIO controller Piyush Mehta
2021-09-23 8:10 ` [PATCH V4 0/3] " Bartosz Golaszewski
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