Hi, Quoting "Documentation/devicetree/bindings/gpio/gpio.txt": Optional standard bitfield specifiers for the last cell: [snip] This setting only applies to hardware with a simple on/off control for pull-up configuration. If the hardware has more elaborate pull-up configuration, it should be represented using a pin control binding. So if I do not want a separate pinctrl driver, how can I do the necessary pull up/down setup in the gpio controller driver? I could not find any drivers using the simple interface. Is this facility available? -- Thanks and Regards, Jay