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Commit 3f551d6a authored by Shawn Guo's avatar Shawn Guo
Browse files

pinctrl: add pinctrl driver for imx6dl 



The imx6dl is a derivative of imx6q with very limited difference.  These
two SoCs are so compatible that they can be handled as one platform in
software.  That said, we will not have target SOC_IMX6DL but just
reusing SOC_IMX6Q.   That's why the pinctrl-imx6dl driver is added here
with symbol PINCTRL_IMX6Q controlling the build of it.

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 8807b344

Documentation/devicetree/bindings/pinctrl/fsl,imx6dl-pinctrl.txt

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* Freescale IMX6 DualLite/Solo IOMUX Controller



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

and usage.



Required properties:

- compatible: "fsl,imx6dl-iomuxc"

- fsl,pins: two integers array, represents a group of pins mux and config

  setting. The format is fsl,pins = <PIN_FUNC_ID CONFIG>, PIN_FUNC_ID is a

  pin working on a specific function, CONFIG is the pad setting value like

  pull-up for this pin. Please refer to imx6dl datasheet for the valid pad

  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               (1 << 6)

PAD_CTL_SPEED_MED               (2 << 6)

PAD_CTL_SPEED_HIGH              (3 << 6)

PAD_CTL_DSE_DISABLE             (0 << 3)

PAD_CTL_DSE_240ohm              (1 << 3)

PAD_CTL_DSE_120ohm              (2 << 3)

PAD_CTL_DSE_80ohm               (3 << 3)

PAD_CTL_DSE_60ohm               (4 << 3)

PAD_CTL_DSE_48ohm               (5 << 3)

PAD_CTL_DSE_40ohm               (6 << 3)

PAD_CTL_DSE_34ohm               (7 << 3)

PAD_CTL_SRE_FAST                (1 << 0)

PAD_CTL_SRE_SLOW                (0 << 0)



Refer to imx6dl-pinfunc.h in device tree source folder for all available

imx6dl PIN_FUNC_ID.