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Date: Thu, 23 Sep 2021 10:10:35 +0200 From: Bartosz Golaszewski <bgolaszewski@...libre.com> To: Piyush Mehta <piyush.mehta@...inx.com> Cc: Arnd Bergmann <arnd@...db.de>, Zou Wei <zou_wei@...wei.com>, Greg KH <gregkh@...uxfoundation.org>, Linus Walleij <linus.walleij@...aro.org>, Michal Simek <michal.simek@...inx.com>, wendy.liang@...inx.com, Nobuhiro Iwamatsu <iwamatsu@...auri.org>, Rob Herring <robh+dt@...nel.org>, rajan.vaja@...inx.com, linux-gpio <linux-gpio@...r.kernel.org>, linux-devicetree <devicetree@...r.kernel.org>, git <git@...inx.com>, Srinivas Goud <sgoud@...inx.com>, arm-soc <linux-arm-kernel@...ts.infradead.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH V4 0/3] gpio: modepin: Add driver support for modepin GPIO controller On Wed, Sep 22, 2021 at 3:53 PM Piyush Mehta <piyush.mehta@...inx.com> wrote: > > 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 > Series queued for next. Thanks! Bart
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