The system controller (SCU) is the central unit to manage the resources on i.MX8 platforms. The SCU firmware provides a set of APIs to access the GPIO PINs on the SCU domain. This patch series implements the standard GPIO driver over the SCU firmware APIs, so that the GPIOs on the SCU domain could be accessed like a local GPIO PINs. Changes in V2: - move the driver into the gpio directory per Krzysztof's feedback - change the subnode description in file fsl,scu.yaml - fix the dt_binding_check error Shenwei Wang (3): dt-bindings: gpio: Add imx-scu gpio driver bindings dt-bindings: firmware: imx: Add imx-scu gpio node firmware: imx: add imx-scu GPIO driver .../devicetree/bindings/firmware/fsl,scu.yaml | 5 + .../bindings/gpio/fsl,imx8-scu-gpio.yaml | 39 +++++ drivers/gpio/Kconfig | 4 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-imx-scu.c | 139 ++++++++++++++++++ 5 files changed, 188 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/fsl,imx8-scu-gpio.yaml create mode 100644 drivers/gpio/gpio-imx-scu.c -- 2.25.1
