Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Wed, 22 Mar 2017 11:35:35 +0100 | Subject | Re: [PATCH v2 3/7] arm: dts: dt-bindings: Add Renesas RZ pinctrl header |
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On Mon, Mar 20, 2017 at 5:14 PM, Jacopo Mondi <jacopo+renesas@jmondi.org> wrote: > 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 */
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@linux-m68k.org
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
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