Re: [PATCH v2 3/7] arm: dts: dt-bindings: Add Renesas RZ pinctrl header

[Geert Uytterhoeven]

On Mon, Mar 20, 2017 at 5:14 PM, Jacopo Mondi <jacopo+renesas@xxxxxxxxxx> wrote:
> Add dt-bindings for Renesas r7s72100 pin controller header file.
>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
> ---
>  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 */

its bank

> +#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

An alternate function that needs ... output

> + * 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

to drive

> + * alternate function configuration.
> + * Some alternate function requires software to force I/O direction of a pin,

functions require

> + * ovverriding the designated one.

overriding

> + * Reference to the HW manual to know when this flag shall be used.

Refer

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds