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    Subject[PATCH v2 3/7] arm: dts: dt-bindings: Add Renesas RZ pinctrl header
    Date
    Add dt-bindings for Renesas r7s72100 pin controller header file.

    Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
    ---
    include/dt-bindings/pinctrl/r7s72100-pinctrl.h | 36 ++++++++++++++++++++++++++
    1 file changed, 36 insertions(+)
    create mode 100644 include/dt-bindings/pinctrl/r7s72100-pinctrl.h

    diff --git a/include/dt-bindings/pinctrl/r7s72100-pinctrl.h b/include/dt-bindings/pinctrl/r7s72100-pinctrl.h
    new file mode 100644
    index 0000000..98852d3
    --- /dev/null
    +++ b/include/dt-bindings/pinctrl/r7s72100-pinctrl.h
    @@ -0,0 +1,36 @@
    +/*
    + * Defines macros and constants for Renesas RZ/A1 pin controller pin
    + * muxing functions.
    + */
    +#ifndef __DT_BINDINGS_PINCTRL_RENESAS_RZA1_H
    +#define __DT_BINDINGS_PINCTRL_RENESAS_RZA1_H
    +
    +#define RZA1_PINS_PER_PORT 16
    +
    +/* Create the pin index from it's bank and position numbers */
    +#define PIN(b, p) ((b) * RZA1_PINS_PER_PORT + (p))
    +
    +/*
    + * Flags to apply to alternate function configuration
    + * All of the following are mutually exclusive.
    + */
    +
    +/*
    + * Pin is bi-directional.
    + * Alternate function that need both input/outpu functionalities shall
    + * be configured as bidirectional.
    + * Eg. SDA/SCL pins of an I2c interface.
    + */
    +#define BI_DIR (1 << 3)
    +
    +/*
    + * Flags used to ask software drive the pin I/O direction overriding the
    + * alternate function configuration.
    + * Some alternate function requires software to force I/O direction of a pin,
    + * ovverriding the designated one.
    + * Reference to the HW manual to know when this flag shall be used.
    + */
    +#define SWIO_IN (1 << 4)
    +#define SWIO_OUT (1 << 5)
    +
    +#endif
    --
    2.7.4
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