On Wed, 18 Aug 2021 13:40:17 +0530, Piyush Mehta wrote:

This patch adds DT binding document for zynqmp modepin GPIO controller.
Modepin GPIO controller has four GPIO pins which can be configurable
as input or output.

Modepin driver is a bridge between the peripheral driver and GPIO pins.
It has set and get APIs for accessing GPIO pins, based on the device-tree
entry of reset-gpio property in the peripheral driver, every pin can be
configured as input/output and trigger GPIO pin.

For more information please refer zynqMp TRM link:
Link: https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf
Chapter 2: Signals, Interfaces, and Pins
Table 2-2: Clock, Reset, and Configuration Pins - PS_MODE

Signed-off-by: Piyush Mehta <redacted>
Acked-by: Michal Simek <redacted>
---
Changes in v2:
- Addressed review comments: Update commit message

Review Comments:
https://lore.kernel.org/linux-arm-kernel/20210615080553.2021061-2-piyush.mehta@xilinx.com/T/#mbd1fbda813e33b19397b350bde75747c92a0d7e1 (local)
https://lore.kernel.org/linux-arm-kernel/20210615080553.2021061-2-piyush.mehta@xilinx.com/T/#me82b1444ab3776162cdb0077dfc9256365c7e736 (local)

Changes in v3:
- Addressed Rob and Michal review comments:
  - Update DT example.

Review Comments:
https://lore.kernel.org/linux-arm-kernel/YRbBnRS0VosXcZWz@robh.at.kernel.org/ (local)
https://lore.kernel.org/linux-arm-kernel/d71ad7f9-6972-8cc0-6dfb-b5306c9900d0@xilinx.com/ (local)
---
 .../bindings/gpio/xlnx,zynqmp-gpio-modepin.yaml    | 41 ++++++++++++++++++++++
 .../bindings/gpio/xlnx,zynqmp-gpio-modepin.yaml    | 43 ++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/xlnx,zynqmp-gpio-modepin.yaml

Reviewed-by: Rob Herring <robh@kernel.org>