* Freescale i.MX6 UltraLite IOMUX Controller

Please refer to fsl,imx-pinctrl.txt in this directory for common binding part
and usage.

Required properties:
- compatible: "fsl,imx6ul-iomuxc" for main IOMUX controller or
  "fsl,imx6ull-iomuxc-snvs" for i.MX 6ULL's SNVS IOMUX controller.
- fsl,pins: each entry consists of 6 integers and represents the mux and config
  setting for one pin.  The first 5 integers <mux_reg conf_reg input_reg mux_val
  input_val> are specified using a PIN_FUNC_ID macro, which can be found in
  imx6ul-pinfunc.h under device tree source folder.  The last integer CONFIG is
  the pad setting value like pull-up on this pin.  Please refer to i.MX6 UltraLite
  Reference Manual for detailed CONFIG settings.

CONFIG bits definition:
PAD_CTL_HYS                     (1 << 16)
PAD_CTL_PUS_100K_DOWN           (0 << 14)
PAD_CTL_PUS_47K_UP              (1 << 14)
PAD_CTL_PUS_100K_UP             (2 << 14)
PAD_CTL_PUS_22K_UP              (3 << 14)
PAD_CTL_PUE                     (1 << 13)
PAD_CTL_PKE                     (1 << 12)
PAD_CTL_ODE                     (1 << 11)
PAD_CTL_SPEED_LOW               (0 << 6)
PAD_CTL_SPEED_MED               (1 << 6)
PAD_CTL_SPEED_HIGH              (3 << 6)
PAD_CTL_DSE_DISABLE             (0 << 3)
PAD_CTL_DSE_260ohm              (1 << 3)
PAD_CTL_DSE_130ohm              (2 << 3)
PAD_CTL_DSE_87ohm               (3 << 3)
PAD_CTL_DSE_65ohm               (4 << 3)
PAD_CTL_DSE_52ohm               (5 << 3)
PAD_CTL_DSE_43ohm               (6 << 3)
PAD_CTL_DSE_37ohm               (7 << 3)
PAD_CTL_SRE_FAST                (1 << 0)
PAD_CTL_SRE_SLOW                (0 << 0)
